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 …
NASA Tracking Bus-Sized Asteroid Nearing Earth Today
17 hours ago · NASA is monitoring a bus-sized asteroid that’s hurtling towards Earth at more than 38,500 miles per hour, according to the space agency's Center for Near Earth Object Studies …
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 called the …
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 found orbiting …
A newly spotted asteroid spins faster than any of its size ever seen
Jan 9, 2026 · The newly discovered asteroid 2025 MN45, illustrated here, is the fastest spinning asteroid larger than 500 meters ever found. It spins once every 112 seconds. NSF-DOE Vera C. Rubin …
Vera C. Rubin Observatory discovers enormous, record-breaking asteroid ...
Jan 7, 2026 · In its preliminary data release, taken from just seven nights of observations, the powerful Vera C. Rubin Observatory has discovered an enormous, fast-spinning asteroid that sets a new record.
This Newly Discovered Asteroid, Almost Half a Mile Wide, Just Set a …
Jan 8, 2026 · A giant asteroid has sent astronomers into a spin, setting a record for how fast it rotates on its axis
Rubin Observatory spots fastest-spinning asteroid of its size
Jan 7, 2026 · The first peer-reviewed study using data from the SLAC-built LSST Camera identifies an asteroid nearly eight football fields long that spins once every two minutes.
New discovery just broke the record for fastest-spinning large asteroid ...
Jan 9, 2026 · The Vera C. Rubin Observatory has discovered the fastest-spinning large asteroid so far, completing a turn in under two minutes.
NASA is tracking a bus-sized asteroid zooming past Earth today - MSN
NASA’s asteroid trackers have just watched a school‑bus‑sized space rock make a safe, distant pass by our planet, part of a steady stream of small objects that routinely zip through the ...