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 comet —that orbits within the inner Solar System or is co …
Asteroids - Science@NASA
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 …
Asteroid | Definition, Size, & Facts | Britannica
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 …
Clemson astrophysicists tell us about asteroids and whether we …
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 …
Scientists Are Racing to Uncover An Asteroid’s Secrets
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 …
This asteroid is spilling secrets about the origin of life on Earth
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 …
Inside the International Asteroid Warning Network - Nature
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.
NASA Alert! 160ft Asteroid Racing Towards Earth On January
11 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 …
Study of fossils suggests dinosaurs were thriving before the mass ...
New research suggests that dinosaur populations were thriving in North America before the asteroid impact 66 million years ago that caused mass extinction.
ESA - Asteroids
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 …