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-orbital with Jupiter …
Eyes on Asteroids - Home - NASA/JPL
2 days 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.
NASA tracking bus-sized asteroid approaching Earth this week
6 days ago · NASA is monitoring a bus-sized asteroid that’s soaring towards Earth at nearly 8,000 miles per hour, according to the space agency's Center for Near Earth Object Studies (CNEOS). Estimated …
Asteroid | Definition, Size, & Facts | Britannica
Oct 20, 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 …
NASA is tracking a bus-size asteroid heading our way; should you
A bus-size asteroid is on course to skim past our planet, a reminder that Earth moves through a shooting gallery of rocks and ice. The close pass sounds ominous, but the science behind these ...
Chance of a devastating asteroid impact briefly spiked in 2025
Dec 10, 2025 · The chances of a devastating asteroid impact briefly spiked in 2025, after astronomers discovered a building-sized asteroid hurtling towards Earth. The asteroid, named 2024 YR4, was first …
Asteroids: What they are and where they come from
Nov 27, 2023 · Asteroids are remnants from the solar system's formation, composed primarily of rock and metal, with sizes ranging from less than 10 meters to hundreds of kilometers in diameter (e.g., …
We've now found 40,000 asteroids that could pose a threat to Earth ...
2 days ago · Scientists have found 40,000 near-Earth asteroids, providing greater insight into the potential threat to Earth from space.
500-meter asteroid is approaching — here’s what scientists ... - Futura
Dec 8, 2025 · Everyone knows about the Chicxulub asteroid that wiped out the dinosaurs 65 million years ago, but it wasn’t the only cosmic intruder to alter Earth’s environment—and it won’t be the last.
Asteroid hurtling toward Earth found to be teeming with building …
Dec 6, 2025 · Sugars essential for life were found for the first time alongside “space gum” on an asteroid hurtling towards Earth, indicating that our universe could be teeming with life, according to new ...