Articles About Asteroids (7)

What are Asteroids?

Learn more about these space rocks orbiting the Sun.

Astronomy Glossary - Terms & definitions

Astronomical Glossary - Terms & Definitions

What do astronomers really mean when they use those technical terms?

A man's silhouette with the milky way and a meteor in the backdrop.

Meteors: How to See

Dates and tips on how and where to see shooting stars from meteor showers all over the world.

What Are Comets?

Comets are small celestial bodies that orbit the Sun. Primarily made of dust and ice, many have a tail (coma) and are thought to be remnants of the formation of the Solar System.

Meteors from Perseids meteor shower, 2017 behind the Milky Way observatory, Calgary, Canada.

What Is a Meteor Shower

Dates and tips on how and where to see "shooting stars" from meteor showers all over the world.

Asteroid 2004 BL86 to Fly By Earth

On Monday, January 26, 2015 asteroid 2004 BL86 flew by at only 3 times the distance of the Moon from the Earth. It will be the largest celestial body to come this close to Earth until 2027.

NASA technicians work on the New Horizons spacecraft at the Kennedy Space Center in November 2005.

The Solar System

Everything that orbits the Sun is part of the solar system.