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 …

Apr 25, 2025 · Asteroids, sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago. Most asteroids can be found orbiting …

Dec 24, 2025 · 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 …

Jun 23, 2025 · Asteroids can give scientists key insights into the formation of our solar system and the Milky Way. They contain materials that predate the formation of our solar system. Earlier this year, a …

Apr 22, 2025 · The asteroid 99942 Apophis is headed for a close flyby with Earth on April 13, 2029, and space agencies are coordinating efforts to study the object during this the once-in-a-lifetime …

1 day ago · Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo missions—and they’re shaking up the search for life beyond Earth.

10 hours ago · Science NASA Alert! 160ft Asteroid Racing Towards Earth On January 7, 2026: Are We Really Safe? Authored by: TN Tech Desk Updated Jan 6, 2026, 19:10 IST Space is bustling with …

2 days ago · Kelly Fast, Acting Planetary Defense Officer for NASA, describes the global network working to detect and assess asteroids that could potentially threaten Earth.

The two most noteworthy classifications for asteroids are "Near Earth Asteroid" (NEA) and "Potentially Hazardous Asteroid" (PHA). Despite the names, neither classification indicates any direct danger to …

Asteroids are cosmic time capsules. These ancient rocks, left over from the formation of the Solar System, offer a direct link to our distant past. They provide clues to how planets like Earth formed …