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View Full Version : Charon Passes in Front of a Star



Fraser
2005-Sep-07, 03:01 PM
SUMMARY: Astronomers from MIT and Williams College have teamed up to capture an event seen only once, 25 years ago. On the night of July 10/11, Pluto's moon Charon briefly passed in front of a distant star - this is called an occultation. By studying how the light from this star dimmed and then brightened again, the astronomers will be able to determine if Charon has an atmosphere. Charon is small, so it doesn't have much gravity to hold an atmosphere, but it's so cold that some gasses could be held in place.

View full article (http://www.universetoday.com/am/publish/mit_williams_catch_light_pluto.html)
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