In space, no one can hear you scream. You may have heard this saying. It’s the tagline from the famous 1979 science fiction movie “Alien.” It’s a scary thought, but is it true? The simple answer is ...

Sound needs a medium (solid, liquid, or gas) to travel. Space is a vacuum, lacking the matter to carry sound waves. No sound in space means no echoes. While a near-perfect vacuum, some sounds can be ...

This fast-paced world has given a lot to us. But as they say, you win some, you lose some, and the most important thing that many of our generation have lost is their sound sleep. You might have ...

Since the beginning of the space program, astronauts have dealt with the realities of spaceflight from microgravity in weak muscles and space radiation, to sleep deprivation and disorientation. Both ...

Chris Impey receives funding from the National Science Foundation. Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...