Exactly how old is the oldest man-made object still floating in space?
After the country's most star-spangled holiday, NASA adds a few more to the stellar catalog.
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...
Did astronauts Jack Lousma and C. Gordon Fullerton see a ghost aboard their shuttle back in 1982? Find out on this Moment of Science.
Is there life on Mars? Maybe not. But there sure is gas. "Methane on Mars" 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.
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?
NASA is planning to send astronauts back to the moon fairly soon. However, there are a few kinks to work out, like what to do about moon dust.
Most extrasolar planets are about the size of Jupiter, not Earth. So, is Earth's size and orbit unique?
We found that lobsters and crayfish communicate by shooting streams of urine into each others' faces. Now, we look at urine signaling from the receiver's end.