Some of the xenon in Earth's atmosphere may have been delivered by comet impacts.
Earth, with its habitable conditions, may be incredibly rare.
Pluto's crater-less surface indicates the presence of geological processes that have erased the marks left by asteroids and comets.
Have you ever wondered why comets look the way they do when they get close to the sun?
The secret to the origins of life on Earth could be in the dust that's leftover after solar systems form.
You've heard about comets and asteroids in space. What is the different?
We bet you have never seen a space video quite like this. No one has!
What is our earth's history? New research suggests that life on Earth has existed without interruption for longer than we thought.
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.