If you've ever watched astronauts, you're bound to wonder at some point: Where - and how - do they go to the bathroom? Read More
Nature's own light show, the aurora borealis, or Northern lights, have been dazzling observers for, well, as long as there have been observers. But what is it? Read More
What creates meteor showers, and where can you find out the best times and places to see lots of these shooting stars? Read More
If you've heard about a supermoon, you know that earth's satellite rock will look bigger to us -- but why? And are there any dangers involved? Find out. Read More
What is a solar flare, do they really cause problems here on Earth - and should you worry? Learn more here. Read More