List of astronomy websites

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This is a list astronomy websites. Some of them are CalSky, Exoplanet Archive, Exoplanet Data Explorer, Extrasolar Planets Encyclopaedia, Universe Today, and Galaxy Zoo. Out of all these Exoplanet Archive is managed by NASA. These websites provide knowledge about exoplanets, eclipses, tides, comets, stars, galaxy and other topics about astronomy. These websites also serve as a knowledge sharing platform for astronomy students and astronomers.



Main article: CalSky

CalSky (sky calendar) is web based astronomical calculator used by astronomers to plan observing. It was created by Arnold Barmettler a researcher at the University of Zurich and formerly a scientific assistant at the European Space Agency.[1] The website, available in English and German, features a calendar (and/or email notifications) generated for your location including information on aurora, comets, tides, solar and lunar eclipses, planets, bright satellite passes (ISS, HST, etc.), occultations, transits, iridium flares, and decaying satellites that may be visible.[2][3][4]

Exoplanet Archive[edit]

Main article: Exoplanet Archive

The NASA Exoplanet Archive is an online astronomical exoplanet catalog and data service that collects and serves public data that support the search for and characterization of extra-solar planets (exoplanets) and their host stars. It is part of the Infrared Processing and Analysis Center (IPAC) and is on the campus of the California Institute of Technology (Caltech) in Pasadena, CA. The archive is funded by NASA and was launched in early December 2011 by the NASA Exoplanet Science Institute (NExScI) as part of NASA's Exoplanet Exploration Program.

Exoplanet Data Explorer[edit]

The Exoplanet Data Explorer lists extrasolar planets up to 24 Jupiter masses.[5][6]

Extrasolar Planets Encyclopaedia[edit]

The Extrasolar Planets Encyclopaedia[7] is an astronomy website, founded in Paris, France at the Meudon Observatory by Jean Schneider in February 1995,[8][9] which maintains a database of all the currently known and candidate extrasolar planets, with individual "note" pages for each planet and a full list interactive catalog spreadsheet. The main catalogue comprises databases of all of the currently confirmed extrasolar planets as well as a database of unconfirmed planet detections. The databases are frequently updated with new data from peer-reviewed publications and conferences.

Galaxy Zoo[edit]

Main article: Galaxy Zoo

Galaxy Zoo is an online astronomy project which invites members of the public to assist in the morphological classification of large numbers of galaxies. It is an example of citizen science as it enlists the help of members of the public to help in scientific research. An improved version—Galaxy Zoo 2—went live on 17 February 2009. The current iteration of the project, launched in April 2010, is Galaxy Zoo: Hubble, and uses Hubble Space Telescope survey data. It is part of the Zooniverse group of citizen science projects.[edit]

Main article: is a space and astronomy news website. Its stories are often syndicated to other media outlets, including CNN, MSNBC, Yahoo!, and USA Today. was founded by former CNN anchor Lou Dobbs and Rich Zahradnik, in July 1999. At that time, Dobbs owned a sizeable share of the company, and, in an unexpected move, left CNN later that year to become's chief executive officer.[10]

Universe Today[edit]

Main article: Universe Today
Universe Today
Type of site
News website
Available in English
Owner Fraser Cain
Created by Fraser Cain
Alexa rank Negative increase 16,545 (July 2012)[11]
Commercial No
Registration Optional
Launched 1999

Universe Today (UT) is a non-commercial space and astronomy news site, founded in 1999[12] by Fraser Cain and edited by Nancy Atkinson.[13][14] The news can then be discussed on the forums. The forum began on 24 July 2003, and was mainly used to discuss the Universe Today news as well as ask space-related questions and discuss alternate theories.[14] In early September 2005, the forum merged with that of Bad Astronomy combined to form the BAUT forum.[15] The website's viewership attains several million people per year.[16][17]

Emily Lakdawalla, of The Planetary Society, said that she relies on Universe Today and Bad Astronomy to "give ... an independent look at big news stories"[18] and that UT plays a key role in space-related journalism, along with other websites such as Several peer-reviewed papers have mentioned Universe Today as being a space-related news website.[19][20][21]

In 2008 the site was briefly banned for about a day from, and then unbanned.[17][22] In March 2011, Businessweek reported that the site had lost 20 percent of its traffic in five days after a change in the page ranking algorithm of Google.[23] In April 2011, the Association of British Science Writers noted that Universe Today decided to ignore embargoed stories.[24]


  1. ^ "Arnold Barmettler". Retrieved 2014-04-07. 
  2. ^ (editor), Günter D. Roth (2009). Handbook of practical astronomy (Rev. ed.). Berlin: Springer. p. 420. ISBN 3-540-76377-5. 
  3. ^ Zimbabwe Scientific Association. The Zimbabwe Science News. 33: 61.  Missing or empty |title= (help)
  4. ^ Astronomy Now. 7-12. 19: 33. 2005.  Missing or empty |title= (help)
  5. ^ The Exoplanet Orbit Database, Jason T Wright, Onsi Fakhouri, Geoffrey W. Marcy, Eunkyu Han, Ying Feng, John Asher Johnson, Andrew W. Howard, Jeff A. Valenti, Jay Anderson, Nikolai Piskunov
  6. ^ Catalog of Nearby Exoplanets, R. P. Butler, J. T. Wright, G. W. Marcy, D. A Fischer, S. S. Vogt, C. G. Tinney, H. R. A. Jones, B. D. Carter, J. A. Johnson, C. McCarthy, A. J. Penny, The Astrophysical Journal, Volume 646, Number 1, 2006
  7. ^ e.g. M. Pätzold, H. Rauer, Astrophys. J. Lett., 568, L117 (2002); S. Ida, D. N. C. Lin, Astrophys. J., 604, 388 (2004); S. N. Raymond, A. M. Mandell, S. Sigurdsson, Science 313, 1413 (2006); J. C. Armstrong, S. L. Larson, Bull. Am. Astron. Soc., 38, 105 (2007); D. J. Stevenson, Nature 451, 261 (2008).
  8. ^ Kirkland, Kyle (2010). Space and Astronomy: Notable Research and Discoveries. Frontiers of Science. Infobase Publishing. p. 29. ISBN 0-8160-7445-3. 
  9. ^ Dvořák, Rudolf (2008). Extrasolar planets: formation, detection and dynamics. Physics textbook. Wiley-VCH. p. 57. ISBN 3-527-40671-9. 
  10. ^ Auletta, Ken (2006-12-04). "MAD AS HELL: Lou Dobbs's populist crusade.". The New Yorker. Retrieved 2007-01-17. 
  11. ^ " Site Info". Alexa Internet. Retrieved 2012-07-02. 
  12. ^ Ian O'Neil (23 March 2009). "Happy 10th Birthday Universe Today!". AstroEngine. Retrieved 2011-08-21. 
  13. ^ "Privacy Policy". Retrieved 2011-08-20. 
  14. ^ a b "Contact Us". Retrieved 2011-08-20. 
  15. ^ Cain, Fraser; Gay, Pamela; Foster, Thomas; Plait, Phil (2008). "It Takes an e-Village". ASP Conference Series. 369: 69. Bibcode:2008ASPC..389...69C. ISBN 978-1-58381-648-6. 
  16. ^ Lutz D. Schmadel (2009). "(158092) Frasercain". Dictionary of Minor Planet Names: Addendum to Fifth Edition: 2006 - 2008. Springer. ISBN 978-3-642-01964-7. 
  17. ^ a b Ian O'Neill (27 October 2008). "Universe Today banned from". AstroEngine. Retrieved 2011-08-20. 
  18. ^ Lakdawalla, Emily (11 August 2011). "The Role of Press Releases in Space News Coverage". The Planetary Society. Retrieved 2011-08-20. 
  19. ^ Gay, Pamela; Cain, Fraser; Plait, Phil; Lakdawalla, Emily; Raddick, Jordan (2009). "Live Casting: Bringing Astronomy to the Masses in Real Time" (PDF). CAP Journal. 6: 26–29. Bibcode:2009CAPJ....6...26G. 
  20. ^ Gay, Pamela; R. Bemrose-Fetter; G. Bracey; Cain, Fraser (2007). "Astronomy Cast: Evaluation of a podcast audience's content needs and listening habits". CAP Journal. 1: 24. Bibcode:2007CAPJ....1...24G. 
  21. ^ P. Russo (2007). "Science communication distribution services in astronomy and planetary sciences outreach" (PDF). Proceedings from the IAU/National Observatory of Athens/ESA/ESO Conference, Athens, Greece, 8–11 October 2007: 232–236. Bibcode:2008ca07.conf..232R. 
  22. ^ Ian O'Neill (28 October 2008). "The Universe Today is unbanned from!". AstroEngine. Retrieved 2011-08-20. 
  23. ^ Felix Gillette (17 March 2011). "Matt Cutts: The Greenspan of Google". Business Week. Retrieved 2013-02-01. 
  24. ^ Aisling Spain (17 April 2011). "Embargo system is broken, says Universe Today, and leaves the game". Association of British Science Writers. Retrieved 2011-08-20.