- De Aarde (Negen Planeten)
- Earth (NASA)
- Earth (NSSDC)
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Aarde
Actueel
Algemeen
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Amateur Astronomy
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- Backyard Astronomer, A
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- Physics and Astronomy Discussion Forums -
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- Whitney's Star Finder
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- Wide-Field Astrophotography Page, A
- Your First Steps in Astronomy
Amateurinstrumenten
- 1 m Dobson
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- APM Telescopes
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- Je eerste kijker
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- Scientifics Online
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- Teles-koophulp
- Televue Optics
- Up Sky Optics
Ask an Expert
Asteroïden, Kometen, Meteoren
- 1908 Siberia Explosion
- 2004 Perseid Meteor Shower, The
- 3753 Cruithne
- American Meteor Society: Current Meteor Outlook
- American Meteor Society: Frequently Asked Questions About Meteors and Meteor Showers
- Arcetri Near Earth Object Precovery Program (ANEOPP)
- Asteroid 2000 YF29
- Asteroid and Comet Impact Hazards
- Asteroid Radar Research
- Asteroid Spacewatch
- Asteroids
- Asteroids NSSDC
- Asteroids: Deadly Impact
- Asteroïden
- Astronomy On-Line: The Leonids
- Barringer Meteor Crater
- Bill Bottke's Asteroid Research
- Comet C/1996 B2 (Hyakutake)
- Comet Lee: A Cosmic Cataclysm Waiting to Happen?
- Comet/1999 S4 (Linear)
- Comets NSSDC
- Comets, Culture, & Currency
- Delta Aquarids, The
- Dutch Meteor Society
- Earth Impact Effects Program
- FAIR: Future Asteroid Interception Research
- Finder Chart for Asteroids
- Gary W. Kronk's Comets & Meteor Showers
- Great Leonid Meteor Storm of 1833, The
- Heavenly Body's
- IMO (Intern. Meteor Org.)
- International Comet Quarterly
- JPL Comet Observation Page
- Kometen
- Leonid Meteor Shower 2004: Modest Peak Expected Nov. 16-19
- Leonids, The
- Mars Meteorites
- Meteor Image Galleries
- Meteor Observing Calendar
- Meteoren
- Meteoren Net
- Meteorite Central
- Meteorite Stamps and Coins
- Meteors - Norwegian Astronomical Society
- Meteors and Meteorites
- Meteors and the Native Americans
- Meteors, Meteorites and Impacts
- Minor Planet Center (MPC)
- NASA Near Earth Object Program
- NEAR Challenge
- Near Earth Objects - Dynamic Site (NEODyS)
- NEAR Mission Homepage
- Near-Live Leonid Watching System
- Nederlandse meteorieten
- Notebook of a Comet Hunter
- NOVA: Doomsday Asteroid
- NSSDC: Asteroids and Comets
- Planetary Society: The NEO Pages
- Radio Meteor Data
- Radio Meteor Reflections
- Recent Comet News NASA
- Robotic Antarctic Meteorite Search
- Rock & Roll Minor Planets
- Scientific American: Bang and Splat
- Shooting Stars: Preview of Summer Meteor Showers
- Sky and Telescope: Comets
- Small bodies NASA
- Small Comets
- Solar System Collisions
- Spaceguard Foundation, The
- SpaceGuard UK Portal
- Summer Meteor Shower
- Tsunami from Asteroid/Comet Impacts
- University of Arizona Lunar and Planetary Laboratory Spacewatch Project
- Vulcan, Comets and the Impending Catastrophe
- Werkgroep Meteoren (KNVWS)
Astrochemistry
- Al Wootten's Molecular Astrophysics
- Astrochemistry Branch at NASA's Goddard Space Flight Center
- Astrochemistry Laboratory - NASA Ames Research Center
- Astrochemistry.net
- Astrophysical Chemistry Group - Ohio State University
- Centre for Cosmic Chemistry and Physics - University College London
- Chemical and Physical Structure of Giant Molecular Cloud Cores
- Cologne Database for Molecular Spectroscopy (CDMS)
- Interstellar Chemistry Lectures
- JPL Molecular Spectroscopy -
- Nitrogen Chemistry in the Interstellar Medium
- Observations of Interstellar Molecules
- Physics and Chemistry of the Interstellar Medium
- Rate99: The UMIST Database for Astrochemistry 1999
- Reaction Dynamics Group - University of Hawai'i at Manoa
- Star Formation & Molecular Astrophysics
- What is Astrochemistry?
- Ziurys Group - University of Arizona
Astrofotografie
- Digitized Sky Survey Canada
- High Resolution CCD-imaging
- Aladin Sky Atlas
- Astro-fotografie.nl
- Astrofoto's P. van Vliet
- Astrofoto's R. Bosman
- Astrofotografie
- Astronomy picture of the day
- Catching the Light
- Digitized Sky Survey DSS
- Digitized Sky Survey ESO
- JPL Picture Archive
- N. Kurita's Astrophoto's
- Planetary Nebulae
- SBIG picture gallery
- SJK Astronomy
- SkyShooter
- Sloan Digital Sky Survey
- VLT Astronomical Images
- Yahoo Space Images
Astronauts
- About.com: Neil Armstrong
- Adm. Alan Shepard, Jr. Profile
- Alan B. Shepard, Jr. Biographical Data
- Apollo Astronauts
- Apt, Jay
- Association of Space Explorers (ASE)
- Astronaut Bio: Christa McAuliffe
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- Astronaut Biography: John Young
- Astronaut Connection
- Astronaut Resources
- Astronauts Memorial Foundation
- Buzz Aldrin
- Canadian Astronaut Roberta Bondar
- Christa McAuliffe (1948-1986)
- Christa McAuliffe Biography
- CNN: John Glenn: Return to Space
- Collins, Michael
- Cosmonaut Biographies
- Cunningham, Walter
- Deke Slayton Airfest
- Dr. Laurel Blair Salton Clark: After Sea and Sky Moving on to Space
- Encyclopedia Astronautica: Astronaut Index by Selection Group
- Encyclopedia Astronautica: Yang Liwei
- FactsOfIsrael.com: Ilan Ramon
- Foale, C. Michael
- Glenn Research Center: Neil A. Armstrong
- Gordon, Richard F.
- Graveline, Duane MD
- Hadfield, Chris A
- Haise, Fred Wallace
- Holocaust-era Art from Yad Vashem's Collection to be sent into Space with Israeli Astronaut
- Imaginary Lines
- In Memoriam: The Astronaut/Cosmonaut Memorial Web Site
- Inside a Spacesuit: Rick Husband
- Israel Astronaut Ilan Ramon
- James A. Lovell
- Jemison, Mae MD
- Jim Lovell: An Astronaut's Story
- Jim Lovell: Still an Explorer
- John Glenn - Space Pioneer
- John Glenn!
- Johnson Space Center: Buzz Aldrin
- Johnson Space Center: Deke Slayton
- Johnson Space Center: Neil Armstrong
- Johnson Space Center: Scott Carpenter
- Kaleri, Alexander
- Last Man on the Moon, The
- Liwei, Yang
- Lost Cosmonauts
- Lu, Edward
- Lunar Orbit - Scott Carpenter
- Mae Jemison
- Malenchenko, Yuri
- Meet Lt. Col. Eileen M. Collins, First Woman Shuttle Commander
- Morgan, Barbara
- Mullane, Mike
- NASA Astronaut Bio: Ellen Ochoa
- NASA Astronaut Bio: Gordon Cooper
- NASA Astronaut Bio: Sally K. Ride
- NASA Astronaut Bio: Virgil I. Grissom
- NASA Astronaut Biographies
- NASA Astronaut Biographies: Eileen Collins
- NASA Astronaut Biographies: Shannon Lucid
- NASA Astronaut Class 2004
- NASA Biographical Data: David M. Brown
- NASA Biographical Data: Ilan Ramon
- NASA Biographical Data: Kalpana Chawla
- NASA Biographical Data: Laurel Blair Salton Clark
- NASA Biographical Data: Michael P. Anderson
- NASA Biographical Data: Rick Douglas Husband
- NASA Biographical Data: William C. McCool
- NASA Biography: John Herschel Glenn, Jr.
- NASA: Astronaut Bio: M. Garneau
- NASA: Ellison Onizuka
- NASA: Frank Borman
- National Women's History: Ellen Ochoa
- New York Times: Yuri Gagarin Killed As Test Plane Falls
- NOVA Online: Frank Borman
- NOVA: To the Moon: Jim Lovell
- NPR: 40th Anniversary of Glenn's Orbital Flight
- Payette, Julie
- Rick Douglas Husband '90
- Roberta Bondar Gallery
- Roberta Bondar, Astronaut
- Sally Ride Leaving NASA
- Sally Ride Science Festivals
- Schweickart, Rusty
- Shannon Lucid
- So You Want To Be An Astronaut
- Space Explorers: Marc Garneau
- Space.com - Neil Armstrong: Self-Proclaimed 'Nerdy Engineer'
- SPACE.com: Astronaut Biography: David Brown
- SPACE.com: Astronaut Biography: Ilan Ramon
- SPACE.com: Astronaut Biography: Kalpana Chawla
- SPACE.com: Astronaut Biography: Laurel Clark
- SPACE.com: Astronaut Biography: Michael Anderson
- SPACE.com: Astronaut Biography: Rick Husband
- SPACE.com: Astronaut Biography: William McCool
- Space.com: Buzz Aldrin - Apollo 11 Lunar Module Pilot
- Space.com: Gordon Cooper Touts New Book Leap of Faith
- Space.com: Gus Grissom Didn't Sink the Liberty Bell 7 Mercury Capsule
- Spacefacts
- StarChild: Neil Armstrong
- Swigert, John Leonard (Jack)
- Tereshkova, Valentina
- TheSpaceRace.com: Eugene Cernan
- They Shot for the Moon
- Tolboev, Magomed
- UTA Alumni Astronauts - Kalpana Chawla
- Wally Schirra
- Who2 Loop: Female First Flights
- Who2 Profile: Sally Ride
- Wikipedia: Eileen Collins
- Wikipedia: Gordon Cooper
- Wikipedia: Gus Grissom
- Wikipedia: John Glenn
- Wikipedia: Sally Ride
- Wikipedia: Wally Schirra
- Wikipedia: Yuri Gagarin
- Women of NASA: Dr. Mae Jemison
- Women of NASA: Sally Ride
- Worden, Al
- Yuri A. Gagarin
- Yuri Gagarin: His Life in Pictures
Astronomers
- Astronomers of the African Diaspora
- Barnard, Edward Emerson
- Brahe, Tycho 1
- Brahe, Tycho 3
- Brahe, Tycho 4
- Bruce Medalists
- Copernicus, Nicolaus 1
- Copernicus, Nicolaus 2
- Copernicus, Nicolaus 3
- Copernicus, Nicolaus 4
- Copernicus, Nicolaus 5
- Deep Skies
- Eratosthenes of Cyrene 1
- Eratosthenes of Cyrene 2
- Galilei, Galileo 2
- Galilei, Galileo 3
- Galilei, Galileo 1
- Galilei, Galileo 4
- Galilei, Galileo 5
- Galilei, Galileo 6
- George Ellery Hale 1
- George Ellery Hale 2
- George Ellery Hale 3
- George Ellery Hale 4
- George Ellery Hale 5
- Hall of Astronomers
- Halley, Edmond 1
- Halley, Edmond 2
- Herschel, Sir William Frederick 1
- Herschel, Sir William Frederick 2
- Hubble, Edwin Powell 1
- Hubble, Edwin Powell 2
- Hyakutake, Yuji 1
- Hyakutake, Yuji 2
- Kepler, Johannes 1
- Kepler, Johannes 2
- Kepler, Johannes 3
- Kepler, Johannes 4
- Kepler, Johannes 5
- Lowell, Percival
- Mitchell, Maria 2
- Moore, Patrick 1
- Moore, Patrick 2
- Moore, Patrick 3
- Newcomb, Simon
- Ptolemy, Claudius 1
- Ptolemy, Claudius 2
- Ptolemy, Claudius 3
- Ptolemy, Claudius 4
- Sagan, Carl 1
- Sagan, Carl 2
- Thomas Hariot 1
- Thomas Hariot 2
- Tombaugh, Clyde 1
- Tombaugh, Clyde 2
- Ulugh Beg, Mohammed Targai 1
- Ulugh Beg, Mohammed Targai 2
- Web Directory: Star*s Family - StarHeads
- Wren, Sir Christopher
Astronomical Calendars
Astronomie clubs
- Alachua Astronomy Club
- Amateur Astronomer's Association of Princeton
- Amateur Astronomers Association of New York
- Amateur Telescope Makers of Boston
- Amherst Astronomy Association
- Astronomical League
- Astronomical Society of New South Wales, Inc
- Astronomical Society of South Australia
- Astronomy Ireland
- Atlanta Astronomy Club
- Austin Astronomical Society
- Battle Point Astronomical Association
- Calumet Astronomical Society
- Chicago Astronomical Society
- Denver Astronomical Society
- Eastbay Astronomical Society
- Fremont Peak Observatory Association
- Grand Rapids Amateur Astronomical Association
- Houston Astronomical Society
- Lake County (Illinois) Astronomical Society
- Lehigh Valley Amateur Astronomical Society (LVAAS)
- Miami Valley Astronomical Society
- Minnesota Astronomical Society
- Moscow Astronomy Club
- Mountain Skies Astronomical Society
- Naperville Astronomical Association
- New Jersey Astronomical Association
- New Mexico Tech Astronomy Club
- Northern Colorado Astronomical society
- Northern Virginia Astronomy Club (NOVAC)
- Observatorio Arval
- Oklahoma City Astronomy Club
- Omaha Astronomical Society
- Orange County Astronomers
- Peoria Astronomical Society
- Prairie Astronomy Club
- Riverside Astronomical Society
- Rose City Astronomers
- Sacramento Valley Astronomical Society
- San Antonio Astronomical Association
- San Diego Astronomy Association (SDAA)
- San Francisco Sidewalk Astronomers
- San Mateo County Astronomical Society
- Sidewalk Astronomers San Francisco
- Societe Astronomique de Liege (SAL)
- Sonoma County Astronomical Society
- South Jersey Astronomy Club
- Southern Astronomical Society (SAS)
- Southern Cross Astronomical Society (SCAS)
- St. Louis Astronomical Society
- STAR Astronomy Club
- Stockton Astronomical Society
- Tallahassee Astronomical Society
- Ventura County Astronomical Society
Astronomy day
- AstroDay
- Astronomical Association of Northern California: Astronomy Day
- Astronomical League: Astronomy Day -
- Astronomy Day 2005 at Art from the Soul
- Astronomy Day: Bringing Astronomy to the People
- Astronomy Magazine: Astronomy Day 2005
- CenTex Astronomy Weekend 2005
- Clay Center Observatory Astronomy Day
- Greetsomeone.com: Astronomy Day Cards
- International Astronomy Day
- NOVAC Astronomy Day 2005
Astrophysics
- Advanced Composition Explorer (ACE)
- Astronomer's Telegram
- Astronomical Optical Interferometry
- CATS Database
- Chandrasekhar, Subramanyan (1910-1995)
- Common Astrophysics Acronyms
- Geometrical Physics
- Hubble Constant
- Imagine the Universe!
- NASA Astrophysics Data System
- Ned Wright's Cosmology Tutorial
- Nuclear Astrophysics Data
- Origins of Structure in the Universe
- Scientific American: Mapping the Universe
- Shapley - Curtis Debate in 1920
- Simbad
- Space Interferometry Mission (SIM)
- Space Time Mass
- Spectrashift.com
- Structure and Evolution of the Universe
- Subrahmanyan Chandrasekhar: The Man Behind The Name
- University of Tennessee: Astronomy 162 - Stars, Galaxies, and Cosmology
Civilian Space Travel
- Affordable to the Individual Space Flight
- ANSARI X PRIZE
- Canadian Arrow
- Da Vinci Project
- First Space Tourist: Dennis Tito's Flight to Station Alpha
- How Space Tourism Will Work
- Lifeboat Foundation
- Nature: X Prize
- ProSpace Online
- Space Elevators, Space Hotels, and Space Tourism
- Space Future
- Space Tour
- Virgin Galactic
- Wikipedia: Ansari X Prize
- X PRIZE Cup
Conferences and Events
- AAS Division on Dynamical Astronomy
- Astronomical Adventures
- Leiden Summer School
- Mt. Rosa GAIA 2002 Conference
- Nuclear and Space Radiation Effects Conference (NSREC)
- Texas Star Party
- UK National Astronomy Meeting (NAM95)
- Web Directory: International Astronomy Meetings
- World Space Week
- World Space Week 2001
- XXVIth General Assembly of the International Astronomical Union (IAU)
- Yuri's Night
Cosmology
- Advanced Physics Made Simple: Cosmology
- ASCA: Advanced Satellite for Cosmology and Astrophysics
- Brief History of Cosmology
- Cambridge Cosmology Public Home Page
- Canadian Network for Observational Cosmology (CNOC)
- Cosmic Mystery Tour
- Cosmic Repulsion
- Cosmology and What Happened Before the Big Bang!
- Cosmology for Beginners
- Cosmology Today
- Cosmology: A Research Briefing
- Cosmology: The Study of the Universe
- Distant Galaxies and Cosmological Models
- Everything Forever
- Great Debates in Astronomy
- Holistic Quantum Cosmology with Decreasing Gravity
- Hubble Space Telescope on Track for Measuring the Expansion Rate of the Universe
- Max Tegmark
- Modern Cosmological Observations and Problems
- Mysteries of Deep Space: Interactive Timeline
- Ned Wright's Cosmology Tutorial
- New Cosmology for the 21st Century, A
- Notes on Cosmology
- NOVA: Origins
- NOVA: Runaway Universe
- Physics 7: Relativity and Cosmology
- Possible Solution for the Problem of Time in Quantum Cosmology
- Scientific American: Making Sense of Modern Cosmology
- Standard Cosmological Model, The
- Structure and Evolution of the Universe
- Topological Defects: Non-Equilibrium Field Theory In Particle Physics, Condensed Matter and Cosmology
- Turning On the Universe
- Understanding of the History of Our Universe by Cosmologists Evolves
- Universe and the Origin of Life
- University of Tennessee: Astronomy 162 - Stars, Galaxies, and Cosmology
- Violence in the Cosmos: Explosive Processes and the Evolution of the Universe
- Web Directory: 1st SPOT Cosmology
- What is Theoretical Cosmology?
De maan
- ALPO Lunar Section Meteoritic Impacts Search
- American Lunar Society (ALS)
- Bad Astronomy: Yes, We Really Did Go to the Moon!
- Grand Canyon and the Moon, The
- Hitchhiker's Guide to the Moon
- Inconstant Moon
- It's the Moon
- Lunar Meteorites
- Lunar Rocks and Thin Sections
- Moon in Science Fiction, The
- Moonpeople
- Nine Planets: The Moon
- NSSDC: The Moon
- Rocks & Soils From the Mo
- Scientific American: Home, Sweet Home!
- Selenology: The Geology of the Moon
- Unknown Moon, The
- Views of the Solar System: The Moon
De Zon
- Ask the Space Scientist About the Sun
- Astronomy in Motion Sun Pages
- Beginnings and Endings
- Best of Free Spirit Presents: The Sun
- British Astronomical Association Solar Section
- De Zon (Negen Planeten)
- HAO Education Pages
- How To Photograph Sunsets
- Image Database of the Sun
- Images of The Sun
- Lockheed Martin Solar and Astrophysics Laboratory
- Mission to Geospace: Probing the Sun-Earth Connection
- NASA Sun-Earth Media Viewer
- Noorderlicht Informatie
- Once and Future Sun
- Scientific American: The GONG Show
- SOHO Mission
- Solar Data Analysis Center
- Solar Data Analysis Center (SDAC) - NASA Goddard Space Flight Center
- Solar Eclipses
- Solar Flare Theory
- Solar Image Index
- Solar Images at SDAC
- Solar Observing by Peter Meadows
- Solar Oscillations Investigation (SOI)
- Solar Physics Branch - Marshall Space Flight Center
- SolarMax
- SolarSoft Latest Events
- SpaceWeather Forecast
- Spectrohelioscope, The
- Stanford SOLAR Center
- Sun Block '99
- Sun Gun
- Sun-climate Question: Is There a Real Connection?
- SunAngle
- SunPosition
- Surfing for Sunbeams
- The Sun (NSSDC)
- The Sun - A Multimedia Tour
- The Sun: Man's Friend & Foe
- Transition Region and Coronal Explorer
- Yohkoh Public Outreach Project
Deep Sky
Eclipses
- Astronomy On-Line: Lunar Eclipses
- BBC Online: Solar Eclipse
- BBC Space: Lunar Eclipse
- Bob Yen's Eclipse Photography
- Earth View ECLIPSE Network
- Eclipse Café
- Eclipse Chasers
- EclipseChaser
- Eric's Black Sun Eclipse Website
- European Space Agency: The Science of Eclipses
- Five Millennium Catalog of Lunar Eclipses
- High Moon
- Hybrid Solar Eclipse of 2005 April 08
- Hybrid Solar Eclipse: April 8 2005
- Lunar Eclipse Observer
- Lunar Eclipse Photo Gallery
- Lunar Eclipses for Beginners
- McGlaun.com Eclipse Page
- MrEclipse.com
- NASA/Goddard Space Flight Center Eclipse Home Page
- Nicholas' Eclipse Page
- Observing and Photographing Lunar Eclipses
- Old Farmer's Almanac: Eclipses
- Sky & Telescope's Eclipse Page
- Solar Eclipse
- Solar Eclipse: Stories From the Path of Totality
- Solar Eclipses
- Solar Eclipses for Beginners
- SPACE.com: Full Moon Fever
- StarrySkies Lunar Eclipse Pages, The
- Total Solar Eclipse Described by Plutarch
- U.S. Naval Observatory Lunar Eclipse Computer
- U.S. Naval Observatory: Upcoming Eclipses of the Sun and Moon
Exoplaneten
Experiments
- High-Frequency Active Auroral Research Program (HAARP)
- International Extreme Ultraviolet Hitchhiker-3 (IEH-3)
- International Space Station Science Operations News
- Kansas Near Space Project
- Long Duration Exposure Facility (LDEF)
- NASA Life Sciences Data Archive
- NASA Space Research: Research on Station
- Payload Safety Public Homepage
- SPACELINE
Exploration
Extrasolar Planets
- Advanced Fiber-Optic Echelle (AFOE)
- Allegheny Observatory
- Anglo-Australian Planet Search (AAPS)
- Arizona Search for Planets (ASP)
- Astro-Venture
- Darwin
- ESA Science & Technology: Darwin
- Exploring New Worlds
- Extrasolar Planets Encyclopaedia
- Extrasolar Visions
- Giant Planets Orbiting Faraway Stars
- Keck Interferometer
- Microlensing Planet Search Project (MPS)
- New Worlds
- Night Sky Network
- Other Worlds, Distant Suns
- Planetary Systems and Their Changing Theories
- PlanetQuest
- PlanetQuest: The Search for Another Earth
- Scientific American: A Parade of New Planets
- SIM PlanetQuest
- SuperWASP
- Transits of Extrasolar Planets Network (TEP)
- Transitsearch.org
- University of California Planet Search Project
Galaxies
Hubble Space Telescope [EN]
Infrared
Institutes
- Australian Space Research Institute (ASRI)
- Brazilian National Institute for Space Research
- Danish Space Research Institute (DSRI)
- DLR - Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V
- Florida Space Grant Consortium
- Institute of Geophysics and Planetary Physics - University of California, Los Angeles
- ISAS - Institue of Space and Astronautical Science (Japan)@
- Lockheed Martin Advanced Technology Center (ATC)
- Max-Planck-Institut für extraterrestrische Physik
- NASA Johnson Space Center Planetary Materials Curation
- Northwestern University - Space Studies Institute
- ONERA-French Aerospace Research Center
- Russian Space Research Institute (IKI)
- SETI Institute: The Search for Extraterrestrial Intelligence
- Space Environment Laboratory
- Space Studies Board - National Research Council
- Swedish Institute of Space Physics
- TeSRE Institute
Interstellar Medium
- ADC Quick Reference: Interstellar Medium (ISM) in Our Galaxy
- Birth and Death of Stars: Interstellar Medium
- Detection of [O I] 6300 Emission from the Diffuse Interstellar Medium
- Galactic Interstellar Medium Dynamics and Cloud Formation
- Interstellar Medium
- Interstellar Medium and Galactic Turbulence
- Interstellar Medium and the Milky Way
- Interstellar Medium, The
- Interstellar Medium: An Online Tutorial
- Interstellar Probe: Exploring the Interstellar Medium and the Boundaries of the Heliosphere
- Molecular Interstellar Medium, The
- Nitrogen Chemistry in the Interstellar Medium
- Notes on the Interstellar Medium for Asph 503
- Physics and Chemistry of the Interstellar Medium
- Scientific American: The Gas between the Stars
- Sofia Terahertz Array Receiver (STAR)
- Star Formation/Interstellar Medium Group - Harvard-Smithsonian Center for Astrophysics
- Stars, Galaxies, and Cosmology: The Interstellar Medium
- Violent Interstellar Medium of Nearby Dwarf Galaxies
Jupiter
Kuipergordel, Quaoar & Sedna
- 2004 DW
- FAQ About Quaoar
- Hubble Spots an Icy World Far Beyond Pluto
- Kuiper Belt and the Oort Cloud
- Kuiper Belt Comets
- Kuiper Belt Page
- Kuiper Belt Page: Sedna - 2003 VB12
- Most Distant Object in Solar System Discovered
- Nine Planets: Sedna
- Quaoar
- Quaoar
- Scientists Find Another Huge Mini-World in Outer Solar System
- Sedna (2003 VB12)
- Size and Albedo of Kuiper Belt Object (20000) Varuna
- Wikipedia: Kuiper Belt
- Wikipedia: Sedna
Mars
- Case of the Missing Mars Water
- Center for Mars Exploration (CMEX)
- Colors of Mars, The
- Daily Martian Weather Report
- Destination Mars
- Exploratorium: Journey to Mars
- Exploring Mars
- Exploring The Planets: Mars
- Geology of Mars
- How Stuff Works: How Mars Works
- HST Images of Mars
- International MarsWatch 2003
- Is There Water on Mars
- Latest Mars-news
- Latest THEMIS pictures
- Malin Space Science Systems Mars Image Release Directory
- Malin Space Science Systems: Life on Mars
- MARS
- Mars (Negen Planeten)
- Mars Atlas
- Mars Clickworkers Pilot Study
- Mars Exploration Rover Mission
- Mars Global Surveyor
- Mars Madness
- Mars Today
- Mars, Phobos, and Deimos
- Mars24
- Mars: Mankind's Future Lies in Space
- MarsNews.com
- MarsNews.com: Life on Mars?
- Martian Soil
- Missions to Mars
- MSSS Viking Image Archive
- New Mars
- NSSDC Photo Gallery: Mars
- Pathfinder Mission
- Planet Mars, The
- Red Zone's Mars Page
- Team Mars Madness
- The Mars Society
- Views of the Solar System: Mars
- Viking Mission
- Water on Mars: How Much Was There? Where Is It Now?
- Welcome to the Planets: Mars
- Whole Mars Catalog at MarsToday.com
- Wikipedia: Exploration of Mars
- Windows to the Universe: Mars
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Mercurius
- ESA Science & Technology: BepiColombo
- Mercurius (Negen Planeten)
- Mercury (NSSDC)
- Mercury Mariner 10 Image Project
- Mercury Unveiled
- Mercury: Planet Closest to the Sun
- MESSENGER: Mercury Surface, Space ENvironment, GEochemistry and Ranging
- Planet Mercury, The
- Views of the Solar System: Mercury
- Welcome to the Planets: Mercury
- Wikipedia: Mercury
- Windows to the Universe: Mercury
Microgravity
- European Space Agency Directorate of Manned Spaceflight and Microgravity
- Life and Microgravity Spacelab (LMS)
- Microgravity Resources
- NASA Lewis Research Center - Microgravity Science Division
- NASA Marshall Space Flight Center - Microgravity Research Program
- Ride With John Glenn Into Microgravity
- UC Berkeley Microgravity Combustion Labs
- USML-2 Mission Archive
NASA [EN]
Neptunus
Ons Zonnestelsel
- 3-D Interactive Solar System
- Astronomical Calculations
- Astronomy for the Masses
- Cyber Space
- De Negen Planeten
- ESA Aurora Programme
- Jessica's Solar System Page
- Kepler's Laws
- Kuiper Belt
- Lunar & Planetary Institute
- NASA Jet Propulsion Laboratory Solar System Dynamics Group
- NASA Solar System Exploration
- NASA Solar System Simulator
- NASA's Planetary Photojournal
- NASA: Our Solar System
- Open Universe
- Pictures of the Planets
- Planetary Fact Sheets
- Planetary Geology
- Solar System
- Solar System Information
- Solar System Live
- Solar Voyager
- Spacetech's Orrery: The Solar System in Action
- StarDate Guide
- The Solar System
- Views of the Solar System
- Virtual Solar System
- Virtual Solar System UK
- Welcome to the Planets
- Werkgroep Maan en Planeten
- Your Weight On Other Worlds
Ontstaan van het Heelal
Onze Melkweg [NL]
Organizations
- Associate Administrator for Commercial Space Transportation (AST)
- Association of Space Explorers (ASE)
- California Space Development Council
- Caltech Space Society
- Canadian Aeronautics and Space Institute (CASI)
- Canadian Space Society (CSS)
- Citizens for Space Exploration
- FAR
- First Millennial Foundation
- JP Aerospace
- NuclearSpace.com
- Office of Public Outreach
- Planetary Society, Australia
- ProSpace
- Russian Space Science Internet
- Space Foundation, The
- SpaceWeb Youth Online Australia
- United States Space Foundation
- World Technology Evaluation Center
Pictures
- Anglo-Australian Observatory Astronomical Images
- AstroMeeting
- Astronomy Picture of the Day (APOD)
- Astronomy Scape
- Beautiful Universe, The
- Digitized Sky Survey
- ICSTARS Astronomy
- ISO Science Results
- Kim's Korner of Astronomy
- NCSA Astronomy Digital Image Library
- Night Sky Live
- NSSDC Photo Gallery
- Observational Mishaps
- Space Finder
- Space Image Libraries
- Space Shots
- SPACE.com: Wallpapers
- Spacearium Galleria
- SpacePix
- Stellar Scenes
- Ultimativ Cosmos Page
- Voyager Image Catalog Query Form
- Web Nebulae
- Western Washington University Planetarium Gallery of Photographic Art
Planetaria
- Adler Planetarium and Astronomy Museum
- American Museum of Natural History - Frederick Phineas and Sandra Priest Rose Center for Earth and Space
- Armagh Planetarium
- Artis Planetarium
- California Academy of Sciences - Morrison Planetarium
- California State University, Fresno - Downing Planetarium
- Chabot Space and Science Center (CSSC)
- Christa McAuliffe Planetarium
- De Anza College - De Anza Planetarium
- Drake Planetarium
- Fairbanks Museum and Planetarium
- Halifax Planetarium
- Hong Kong Space Museum
- LodeStar Astronomy Center
- Longway Planetarium
- Memphis Pink Palce Museum - Lida Gammill Sharpe Planetarium
- Michigan State University - Talbert and Leota Abrams Planetarium
- Newark Museum - Alice and Leonard Dreyfuss Planetarium
- Nicholas Copernicus Museum at Frombork
- Orbit! 3D On-Line Planetarium
- Planetarium - Wikipedia NL
- Planetarium at De Anza College
- Planetarium Eise Eisinga
- Planetarium Software
- Planetarium.nl
- Planétarium
- Schiele Museum of Natural History and Planetaria
- Seneca College of Applied Arts and Technology - Roberta Bondar Earth and Space Centre Planetarium
- Sudekum Planetarium
- Tycho Brahe Planetarium and Omnimaxtheater
- University of Arizona - Flandrau Science Center and Planetarium
- University of Colorado at Boulder - Fiske Planetarium
- University of Nebraska State Museum - Mueller Planetarium
- University of Nevada, Reno - Fleischmann Planetarium and Science Center
- University of North Caolina at Chapel Hill - Morehead Planetarium and Science Center (MPSC)
- University of Toledo - Ritter Planetarium and Brooks Observatory
- University of Wollongong - Science Centre and Planetarium
- Web Directory: Planetarium Web Sites
- West Virginia University - Tomchin Planetarium and Observatory
- Your Sky
Pluto & Charon
Radio Astronomy
- Association for Radio Astronomy in Education
- Atlas of DRAGNs
- Brandeis Radio Astronomy Group
- Caltech Computational Astronomy
- Deep Space Network Radio Astronomy
- Dominion Radio Astrophysical Observatory
- Five College Radio Astronomy Observatory (FCRAO)
- Introduction to Radio Astronomy, An
- Kolner Observatorium fur Sub-mm Astronomie
- National Radio Astronomy Observatory
- Observatorio Astronomico Nacional of Spain
- Ohio State University Radio Observatory
- Radio Astronomy Group - University of Tasmania
- Radio Astronomy Imaging Group (RAI)
- University of Calgary (Canada) - Radio Astronomy Laboratory
- University of Indianapolis
- VLA FIRST Survey
Research
- Anglo-Australian Observatory (AAO
- Black Forest Observatory
- Calar Alto Observatory
- California Institute of Technology - Submillimeter Observatory
- Centre de Recherche Astronomique de Lyon
- Centro de Estudos do Universo
- Chabot Space and Science Center (CSSC)
- Custer Institute and Observatory
- Dublin Institute for Advanced Studies - Dunsink Observatory
- Estacion Astronomica Rio Grande
- Fremont Peak Observatory
- Griffith Observatory
- Grove Creek Observatory
- Harvard-Smithsonian Center for Astrophysics
- International Extreme Ultraviolet Hitchhiker-3 (IEH-3)
- Japanese National Astronomical Observa
- Kopernik Space Education Center
- Large Millimeter Telescope
- Leiden University - Leiden Observatory
- Lund University Observatory
- Monterey Institute for Research in Astronomy
- Nicolaus Copernicus Astronomical Centre
- Niels Bohr Institute
- Observatory Science Centre, The
- Phillips Exeter Academy - Grainger Observatory
- Queen's University - Sudbury Neutrino Observatory (SNO)
- Rainwater Observatory and Planetarium
- Robert Ferguson Observatory
- Royal Observatory of Belgium
- Royal Observatory, Edinburgh
- San Diego State University - Mt Laguna Observatory
- Southern African Large Telescope (SALT)
- Space Telescope Science Institute
- Tel-Aviv University - Florence and George Wise Observatory
- TeSRE Institute
- Thueringer Landessternwarte Tautenburg
- Tycho Brahe Observatory
- Universidad Nacional de La Plata - La Plata Observatory
- University of Hawaii at Manoa - Institute for Astronomy
- University of Ljubljana - Astronomical Observatory
- University of Toledo - Ritter Planetarium and Brooks Observatory
- University of Toronto - David Dunlap Observatory
- Vatican Observatory
- Wichita State University - Lake Afton Public Observatory
- Windowpane Observatory
Saturnus
- Cassini Mission (ESA)
- Cassini Mission (NASA)
- Magnetosphere and Plasma Science (MAPS) Working Group
- NASA's Planetary Photojournal: Saturn
- NSSDC Photo Gallery: Saturn
- Planet Saturn, The
- Saturn and Satellites
- Saturn Daily
- Saturn's Ring System
- Saturnus (Negen Planeten)
- See Saturn Closest to Earth in 30 Years
- Sixth Planet from the Sun: Saturn
- Sky & Telescope: An Observing Guide to Saturn
- Voyager Saturn Science Summary
- Welcome to the Planets: Saturn
- Windows to the Universe: Saturn
Scientific Notation
Software [EN]
Space Agencies
- Austrian Space Agency
- Canadian Space Agency (CSA)
- Centre National d'Etudes Spatiales (CNES)
- China Academy of Launch Vehicle Technology (CALT)
- China National Space Administration (CNSA)
- European Space Agency
- Italian Space Agency
- Japan Aerospace Exploration Agency (JAXA)
- NASA
- National Space Development Agency of Japan (NASDA)
- Norwegian Space Centre
- Pakistan Space & Upper Atmosphere Research Commission
- Romanian Space Agency (ROSA)
- Russian Space Agency (RKA)
- Swedish National Space Board
Space Environment
- Astronomy in Motion Sun Pages
- Brighten Up The Classroom
- Journal of Atmospheric and Solar-Terrestrial Physics
- Long Duration Exposure Facility (LDEF) Archive System
- Mission to Geospace: Probing the Sun-Earth Connection
- Natural VLF Radio - Sounds of Space Weather
- Oulu Space Physics Textbook: Geomagnetic Storms
- Solar and Heliospheric Physics Group - University of California, San Diego
- Space Audio
- Space Environment Center - National Oceanic and Atmospheric Administration
- Space Environments and Effects Analysis Section - European Space Agency
- Space Environments and Technology Archive System
- SpaceWeather.com
- Venus Transit 2004: Sun-Earth Day
- Web Directory: Space Environment Links
Space Physics
- Committee on Solar and Space Physics (CSSP)
- Geospace Physics Laboratory (GPL) - Florida Institute of Technology
- IMAGE: Glossary of Key Terms & Concepts
- Laboratory for Atmospheric and Space Physics (LASP)
- Oulu Space Physics Textbook
- Space Physics & Aeronomy Research Collaboratory (SPARC)
- Space Physics and Aeronomy (SPA) Section - American Geophysical Union
- Space Physics and Aeronomy in Geophysical Research Letters
- Space Physics at the NSSDC
- Space Physics Data System (SPDS)
- Space Physics Group - University of Houston
- Space Physics Group - University of Newcastle
- Space Physics Group - University of Oulu
- Space Physics Group - University of Washington
- Space Physics Research Group (SPRG) - University of California at Berkeley
- Space Physics Research Laboratory - Embry-Riddle Aeronautical University
- Space Physics Research Laboratory - University of Michigan
- Space Plasma Physics - Alfvén Laboratory
- Space Radiation Laboratory (SRL) - California Institute of Technology
- Swedish Institute of Space Physics, Uppsala Division (IRFU) Wave Group
Space Stations
- Encyclopedia Astronautica: International Space Station
- How Space Stations Work
- International Space Station (ISS)
- International Space Station Challenge
- International Space Station Program
- International Space Station Science Operations News
- Mir Space Station
- MIR Space Station
- Mir Space Station: 15 Years in Orbit
- MIRNEWS
- NASA: International Space Station
- Salyut
- Salyut 4 Space Station
- Salyut : Astronautix.com
- Spaceflight Now: Space Station
- Virtual Beanstalk Project
- Where Is the International Space Station?
- Wikipedia: International Space Station
Spacecraft
- ANTS: Automomous NanoTechnology Swarm
- Apollo Lunar Surface Journal
- Apollo Program, The
- Apollo Project
- Apollo Saturn Reference Page
- Apollo Spacecraft: A Chronology
- Chariots for Apollo: A History of Manned Lunar Spacecraft
- Deep Cold
- ESA Automated Transfer Vehicle (ATV)
- Field Guide to American Spacecraft
- Gemini Program
- History of the Delta Launch Vehicle
- Kennedy Space Center: The Apollo Program
- Mercury Project
- NASA Human Space Flight: The Apollo Program
- NASA Sounding Rocket Operations Contract (NSROC)
- NASA: Technical Diagrams and Drawings
- NASDA H-II Transfer Vehicle (HTV)
- NOVA: To the Moon
- PM.Zone: SpaceShipOne
- Project Apollo Archive
- RLV - Reusable Launch Vehicle
- Scientific American: The Way to Go in Space
- Sea Launch Company
- Shenzhou 5
- Space Elevators, Space Hotels, and Space Tourism
- Space Shots
- Space Transportation Association (STA)
- Space.com: China Launches Human Into Orbit
- Spacecraft Avionics
- Spacelink - Mercury Missions
- SpaceShipOne
- This New Ocean: A History of Project Mercury
- Tier One
- Wikipedia: Apollo Program
- X-38 Technology
Stars
- Advanced Fiber-Optic Echelle (AFOE)
- Astronomy 122: Birth and Death of Stars
- Cepheid Distance Scale: A History
- De Sterren
- Genesis Mission
- Levensloop Sterren
- Magnetars and Soft Gamma Repeaters
- Olbers's Paradox
- RX J1856.5-3754 and 3C58: Cosmic X-rays May Reveal New Form of Matter
- RXTE Guest Observer Facility
- Star Formation/Interstellar Medium Group - Harvard-Smithsonian Center for Astrophysics
- Star Formation; The Interstellar Medium
- Star Journey
- Stars: Portraits of Stars and Their Constellations
- SuperWASP
- SWAS: Submillimeter Wave Astronomy Satellite
- Usenet Physics FAQ: Olbers' Paradox
- Vincent's Space Oddities Page
- Why Is the Sky Dark at Night?
Sterrenstelsels
Sterrenwachten [NL]
- 'Corona Borealis' - Velp
- 'Cosmos' - Lattrop
- 'Halley' - Heesch
- 'Jan Paagman' - Asten
- 'Mercurius' - Dordrecht
- 'Mira' - België
- 'Quasar' - Hoeven
- 'Saturnus' - Heerhugowaard
- 'Schrieversheide' - Heerlen
- 'Sonnenborgh' - Utrecht
- 'Tweelingen' - Spijkenisse
- 'Vesta' - Oostzaan
- Volkssterrenwacht Burgum
- Volkssterrenwacht Bussloo
- Volkssterrenwacht Leiden
- Volkssterrenwacht Nijmegen
- Zonneobservatorium 'Schothorst'
Telescopes
Tijdschriften
Uranus
Venus
- 1882 Transit of Venus: Observations from Wellington, South Africa
- 2004 Transit of Venus
- NASA: Venus
- Nine Planets: Venus
- Planet Venus, The
- Solar System: Venus
- Transit of Venus
- Transit of Venus: Where to See It
- Venus Transit 2004, The
- Venus Transit 2004: Sun-Earth Day
- Views of the Solar System: Venus
- Welcome to the Planets: Venus
- Wikipedia: Venus
- Windows to the Universe: Venus
Zwarte Gaten
- Astronomy Net Blackholes Discussion Forum
- Beyond the Event Horizon
- Black Hole 2001: The Pit Needs To Be Explored
- Black Hole Pictures
- Black Holes and Beyond
- Black Holes and Neutron Stars
- Black Holes FAQ
- Black Holes III: Theory and Mathematical Aspects
- Black Holes: General Information
- Cambridge Relativity: Black Holes
- Falling Into a Black Hole
- Frequently Asked Questions (FAQs) on Black Holes
- Geometry Around Black Holes
- Hubble Provides Multiple Views of How to Feed a Black Hole
- Introduction to Black Holes, An
- Naked Singularity, The
- Simulation of a Black Hole by Raytracing
- Spacetime Wrinkles
- Violence in the Cosmos: Black Holes