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  1. 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 …

  2. NASA tracking bus-sized asteroid approaching Earth this week

    5 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 …

  3. 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 …

  4. Asteroid Facts - Science@NASA

    May 5, 2025 · Asteroids, sometimes called minor planets, are rocky remnants left over from the formation of our solar system about 4.6 billion years ago. For the most up to date count of …

  5. 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 …

  6. Chance of a devastating asteroid impact briefly spiked in 2025

    6 days ago · The chances of a devastating asteroid impact briefly spiked in 2025, after astronomers discovered a building-sized asteroid hurtling towards Earth. The asteroid, named …

  7. Asteroids - Ask An Earth and Space Scientist

    There are three general types of asteroids: carbonaceous, stony, and metallic. They are called C-type, S-type, and M-type asteroids. The names are based on the type of material believed to …

  8. "Space gum" and sugars discovered in asteroid Bennu samples, …

    Dec 3, 2025 · Samples collected from the asteroid Bennu are continuing the shed light on the origins of the solar system and how life developed on Earth, scientists say.

  9. 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 …

  10. NASA discovers 'space gum' and sugars 'crucial to life' in asteroid ...

    Dec 3, 2025 · Bennu samples contain life-friendly sugars, a strange "space-gum," and ancient stardust, offering fresh clues to how life's ingredients formed in the early solar system.