There are a million space rocks nearby. Astronomers have only mapped about 9,700 of them.
In order to reach Mars, our astronauts may have to stop by a lassoed astroid first.
You've heard about comets and asteroids in space. What is the different?
Why is the earth round? Why isn't it a cube or a pyramid?
Learn about 24 Themis, one of the largest known asteroids.
If you've been to a cave, you might think that it's cold underground. Nothing could be further from the truth. Learn more on this Moment of Science.
Beyond our atmosphere flies a lot of debris. Some fragments can be larger than mountains, but most is space-dust.
The startling experience of five British monks from the twelfth century who saw an enormous explosion occur on the moon. The moon still be vibrating today.
How many times have you actually seen a star explode or a asteroid at night? Have ever learned about how the records of these events are taken? Then tune in.
What is the difference between an asteroid and a comet?