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Hartley 2 Close Up

Hartley 2, Close Up

This image from the High-Resolution Instrument on NASA's EPOXI mission spacecraft shows part of the nucleus of comet Hartley 2. The sun is illuminating the nucleus from the right. A distinct cloud of individual particles...
Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'
Quote of the Day
Science is not only compatible with spirituality; it is a profound source of spirituality.

- Carl Sagan
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