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 comet —that orbits within the inner Solar System or is co-orbital with Jupiter …

1 day ago · Explore the 3D world of Asteroids, Comets and NEOs. Learn about past and future missions, tracking and predicting orbits, and close approaches to Earth.

4 days ago · Asteroid, any of a host of small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring called the asteroid …

Apr 16, 2026 · As of April 13, an infamous giant asteroid known as Apophis is now three years away from becoming the first space rock of its size to come near Earth in recorded human history.

Apr 14, 2026 · The asteroid is a relic of the early solar system from about 4.6 billion years ago, made of leftover raw material that was never part of a planet or moon, according to NASA. Though its exact …

Oct 3, 2025 · An asteroid, called 2025 TF, safely passed within roughly 250 miles (400 km) of our planet on Sept. 30 after surprising astronomers.

2 days ago · Welcome to Asteroid Alerts, your source for tracking Near-Earth Objects and potential asteroid threats. Our system continuously monitors data from Minor Planet Center and NASA Sentry …

An asteroid simulator that lets you design your own asteroid and launch it at Earth. Simulate the effects of an asteroid impact on Earth's population.

Sep 17, 2025 · Asteroids are rocky formations of the solar system from billions of years ago that are seen orbiting the sun and can be different sizes. NASA estimates more than 1.3 million asteroids are …

8 hours ago · Asteroids are small and often irregularly-shaped Solar System bodies. The known majority of them orbit the Sun in the so-called main asteroid belt, between the orbits of the planets Mars and …