This topics covers all kinds of tectonic and geological activity on earth, and beyond. Several planets and moons have their own patterns of activity, and these are fair game this week as well.

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Emission nebulae are nebulae whose gasses are hot enough to glow with their own light.

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This challenge is going to be about anything in astronomy discovered in the last 10 years or so. It can be anything, from new planets, to new stars, new galaxies, new phenomena, anything new in astronomy. It's your choice. If the phenomena or object is a little older, but the theory describing it is more recent, that's okay also. Look back ( Read more... )

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Many of the constellations are named after animals, from Leo to Cetus, Pisces to Ares, Ursa Major to Canis Minor. And it's not just the constellations, either. The connection between astronomical objects and animals exists in myth and beyond. This month's challenge is to illustrate that connection.

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Since we have only six submissions for the current challenge, I'm going to extend it another week. Probably the holiday and all. There has just got to be more than six good images of what alien worlds look like!

Away to the challenge!

It now ends December 7th, 2008 at 5:00 p.m. EST.

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