Why is the earth round? Why isn't it a cube or a pyramid?
That low-hanging moon looks like you can reach out and touch it, but it is actually further away than when it is at the sky's zenith, where it looks smaller!
Why is that autumn moon so bright? The Earth isn't receiving anymore light than usual, the timing is just different!
Kepler’s Telescope has detected over 1200 possible planets. But this discovery is unique. Scientists found two planets in the same orbit in a system!
There is no place on the moon that is completely dark. Learn why!
Looking for a seaside vacation spot? Consider Saturn's largest moon, Titan. There's no chance of getting sunburned, but you'll want to take a heavy parka...
Contrary to what fairy tales tell us, there is nothing holding the moon up in the sky. So why doesn't it fall down? Find out on this Moment of Science.
Of course, most of the technology on Star Trek doesn't exist for real. But at least one cool bit of Star Trek science has been made real.
It seems to be possible for planets in a stable solar system to somehow get off track and run into each other. Is our planet in danger?
NASA is planning to send astronauts back to the moon for long missions. How are the astronauts going to stay in shape in zero or low gravity?