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Explanation: Follow these 5 frames clockwise starting from the top left to track the view from the EPOXI mission spacecraft as it approached, passed under, and then looked back at the nucleus of comet Hartley 2 on November 4. Its closest approach distance was about 700 kilometers. In fact, this encounter was the fifth time a spacecraft from planet Earth has imaged a comet close-up. But Hartley 2's nucleus is definitely the smallest one so far, its long axis spanning only about 2 kilometers (1.2 miles). Though Hartley 2 is small, these stunning images showing jets of dust and gas indicate an impressively active surface. The jets are seen originating from the rough surface areas, with sunlight illuminating the nucleus from the right. Remarkably, rough areas at both ends of the elongated nucleus are joined by a narrower, smooth waist. The EPOXI mission reuses the Deep Impact spacecraft that launched a probe impacting the nucleus of comet Tempel 1 in 2005.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: comet - comet nucleus - spacecraft
Publications with words: comet - comet nucleus - spacecraft
See also:
- APOD: 2025 January 13 Á Comet ATLAS Before Sunrise
- APOD: 2024 December 16 Á A Kilometer High Cliff on Comet Churyumov Gerasimenko
- APOD: 2024 November 27 Á The Meteor and the Comet
- APOD: 2024 November 11 Á The Unusual Tails of Comet Tsuchinshan Atlas
- APOD: 2024 November 6 Á Comet Tsuchinshan Atlas over the Dolomites
- APOD: 2024 October 21 Á Comet Tsuchinshan ATLAS over California
- Comet Tsuchinshan ATLAS Flys Away