Asteroid - Wikipedia
An asteroid is a minor planet —an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified …
Eyes on Asteroids - NASA/JPL
Explore the 3D world of Asteroids, Comets and NEOs. Learn about past and future missions, tracking and predicting orbits, and …
Astroid -- from Wolfram MathWorld
Sep 2, 2026 · An astroid is a 4-cusped hypocycloid which is sometimes also called a tetracuspid, cubocycloid, or paracycle. The …
Asteroids - Science@NASA
Sep 21, 2026 · Asteroids, sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar …
What Is an Asteroid? | NASA Space Place – NASA Science for Kids
Jul 31, 2026 · This means that the asteroid and the planet follow the same path around the sun. Earth and a few other planets have …
Next Asteroid to Hit Earth | Asteroid 2026 | Asteroid Heading …
Aug 26, 2026 · Is it likely for an asteroid to hit Earth anytime soon? In this article, we’ll answer the most burning questions about …
Next Five Asteroid Approaches - NASA Jet Propulsion Laboratory (JPL)
The Asteroid Watch dashboard tracks asteroids and comets that will make relatively close approaches to Earth. The dashboard …
Asteroid | Definition, Size, & Facts | Britannica
Sep 16, 2026 · Asteroid, any of a host of small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily …
Asteroid Facts - Science@NASA
Sep 21, 2026 · Asteroids are rocky remnants left over from the formation of our solar system about 4.6 billion years ago. Here are …
99942 Apophis - Wikipedia
99942 Apophis (provisional designation 2004 MN4) is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) …