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Type | Description | Contributor | Date |
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Add new Web site: Live Science - Halley's Comet has begun its return journey to Earth. | Dec 10, 2024 | ||
Add new Web site: Nature - Halley's comet is quite young. | Aug 20, 2024 | ||
Add new Web site: NASA Technical Reports Server - Comet Halley and History. | Jun 28, 2024 | ||
Add new Web site: Science Museum - Halley's Comet: Collisions with history. | Sep 05, 2023 | ||
Add new Web site: Penn Museum - Halleys Comet. | Apr 28, 2023 | ||
Add new Web site: NASA Science - 1P/Halley. | May 29, 2020 | ||
Add new Web site: Space.com - Halley's Comet: Facts About the Most Famous Comet. | May 29, 2020 | ||
Changed date on which Halley's Comet passed closest to Earth in 1986 from April 11 to April 10. |
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Nov 04, 2015 | |
Article revised and updated. | Feb 06, 2015 | ||
Add new Web site: KidsAstronomy.com - Halley's Comet. | Aug 12, 2014 | ||
Add new Web site: Buzzle.com - Halley's Comet. | Jan 13, 2014 | ||
Mentioned possible observation of Halley's Comet in 467/466 BCE. | Sep 15, 2010 | ||
Added photograph. | Jan 14, 2009 | ||
Article revised and updated. | Feb 19, 2008 | ||
Article revised and updated. | Nov 10, 2006 | ||
Added new Web site: The Nine Planets - Phobos. | Jun 08, 2006 | ||
Article added to new online database. | May 27, 1999 |