Exactly how old is the oldest man-made object still floating in space?
We've been imagining that we're sitting in a geostationary satellite. That's a satellite that orbits the equator at the same speed and direction.
If you want to reach from a geostationary satellite to earth using a rope does the rope's thickness matter?
Say you want to bring some supplies up to your satellite... could you just lower a rope down to earth and haul it up?
Have you ever wondered what the speed of light meant?
Why do we send worms into space? Find out on this Moment of Science.
Imagine being cooped up for months inside a space capsule or station with other astronauts, constantly checking equipment to make sure everything works.
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?
During a "meteor shower" bits of rocky material that enter our atmosphere from space burn up because of friction.
Beyond our atmosphere flies a lot of debris. Some fragments can be larger than mountains, but most is space-dust.