When we think about asteroids that could threaten Earth, we often imagine massive, city-sized rocks hurtling through space.

At long last, particles of water–ice have been discovered in the frozen Kuiper Belt of another star. The discovery, made by ...

When we think about space exploration, most of the focus is on what’s out there — the Moon, Mars, distant asteroids. But what ...

The time taken to orbit the Sun increases, for example, Mercury orbits once every ... enough to make it round or spherical in shape. Asteroids are made of metals and rocky material.

It is too distant to be considered a true satellite of Earth, but it is the best and most stable example to date of ... have identified about 1 million asteroids in the solar system, with more ...

Participants work in teams to track near-Earth asteroids using professional-grade telescopes and advanced programming tools. Then, they calculate each asteroid’s orbit, projecting their path ...

The solar system is our cosmic neighborhood, made up of the sun and everything that orbits it — planets, moons, asteroids, comets, and even dust and gas. The order of the planets in the solar ...

An asteroid at the end of the Cretaceous Period ended the dinosaurs, but earlier smaller extinctions dramatically set the ...