in astronomy

ISS, Penumbra

The ISS passing into Earth's penumbra

Counter-intuitively, the ISS is moving from right (west) to left (east) in this image. As it passed over Ireland it passed behind the Earth and into the planet’s shadow, or [[penumbra]]. The more you know.


3 comments on 'ISS, Penumbra':
  • Shane Murphy

    May 7, 2010 at 23:09

    Nice one Mark. Looks like you caught Iron Man flying across the sky.
    Was that about 20 sec exposure?

  • Elliot

    May 9, 2010 at 19:22

    Ooh! You’ve taught me something…coolio.

  • Mark

    May 9, 2010 at 19:37

    Win! The most useful thing I taught anyone before now was to coach my niece to say “Why?” when questioned.


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