About 324,000 results
Open links in new tab
  1. NASA tracking two house-sized asteroids approaching Earth today

    3 days ago · NASA is tracking two house-sized asteroids zipping toward Earth today as fast as around 20,500 miles per hour. One asteroid, known as "2025 VW," is projected to make its …

  2. Asteroid - Wikipedia

    An asteroid is a minor planet —an object larger than a meteoroid that is neither a planet nor an identified comet —that orbits within the inner Solar System or is co-orbital with Jupiter (Trojan …

  3. Eyes on Asteroids - Home - NASA/JPL

    3 days ago · You are looking at a real-time visualization of every known asteroid or comet that is classified as a Near-Earth Object (NEO). With asteroids represented as blue points, and …

  4. 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 …

  5. What Are Asteroids? Key Facts About the Mysterious Rocks of Our …

    Nov 6, 2025 · Understand what asteroids are, how the asteroid belt works, and why these rocky solar system objects help us learn about our planetary origins.

  6. Is a deadly asteroid about to hit Earth? Meet the man who can tell …

    3 days ago · When an asteroid threatens Earth, astronomers use a rating called the Torino scale to communicate the risk. Richard Binzel, who invented the scale, tells New Scientist about his …

  7. 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 …

  8. What are asteroids? | Space

    Jul 28, 2023 · Using NASA definitions, an asteroid is "A relatively small, inactive, rocky body orbiting the sun," while a comet is a "relatively small, at times active, object whose ices can …

  9. 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 …

  10. Chances Of Asteroid 2024 YR4 Hitting Moon Could Increase To …

    3 days ago · There's a 4% chance that an asteroid, named 2024 YR4, will hit the Moon in 2032. Now, the astronomers are concerned as this probability could increase to over 30% based on …