Asteroids

Don't confuse comets and asteroids.

Don't mix up comets and asteroids.

Previous episodes of mass extinctions were driven by natural disasters such as asteroids, but this one is driven by humans.

Soon, the space agencies launched thousands of robot probes all over the Solar System to explore planets, moons, asteroids, and comets...

Its massive gravity well tugs many asteroids from the outer belt inwards.

What's the difference between asteroids and comets?

Eight known planets and their moons, along with comets, asteroids, and other space objects orbit the Sun.

Mars has two moons, Phobos and Deimos, which have unusual shapes. Scientists think these potato-shaped moons were once asteroids captured by Mars' gravitational pull.

Mars has two small natural satellites, Phobos and Deimos. They are highly irregular in shape and are believed to be asteroids captured by Mars' weak gravitational field.

Asteroids can be a few feet to several hundred miles wide.