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4 June 2010

Solar System Tour: Venus

Venus is the second planet out from the sun, and is just slightly smaller than Earth. It is 12,102 km across, which is about 95% the size of earth. You can see Venus in the sky in the morning or evening as a very bright “star”. In fact, for a long time it was called the “morning star” or “evenstar”. It is always pretty close to the sun in the …

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20 December 2009

AGU 2009 – Day 3: Venus and the Moon

I’m splitting day 3 into two posts because there were so many interesting sessions. Stay tuned for the second post about astrobiology and society. But for now, Venus and the moon! I started the day off at the Venus session. One of the first talks I heard was by Cedric Gillman about the history of water on Venus. He suggested a very thick primordial H2O atmosphere with a surface pressure …

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17 December 2008

AGU Day 2: Venus

Poor Venus. Even though it is right next door to Earth, it tends not to get much attention. This is because it’s so hot that we can’t last long if we land there, and it’s so cloudy that we can’t study its surface very easily from orbit. It’s a really interesting place though: it is the closest planet in size to the Earth, but it’s climate is drastically different. NASA …

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