Starship Asterisk*

Among the 3000+ exoplanets discovered, have they found any which have two (or more) equal sized planets orbiting each other rather than a smaller satellite orbiting a larger planet? Just curious, as it occurs to me this could occur. But does it? Earth and the Moon are probably the best examples of t...

I think it must be the aliens.

If the earth's axis were pointed directly toward the galactic center, and we called that north, then in the northern hemisphere you'd have no starless area of the sky - only almost-starless near the horizon. But in the southern hemisphere you'd have a largely starless area above you, and at the sou...

Céline, think of when you are in the mountains and you see a cloud ahead, on the road. It looks like a big white ball of cotton. As you get closer, it starts to appear translucent, and once you're inside it you are surprised that you can see the road in front of you, to a point. The cloud is now all...

I have a fairly simple theoretical question. If our Sun were at the very edge of our galaxy, how would our night sky look? I asked this question on Yahoo forums and got answers like "We ARE at the edge of our galaxy." I'm sure the people in this forum are much better informed... My thinkin...