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  2. Meteoroid - Wikipedia

    en.wikipedia.org/wiki/Meteoroid

    [2] [3] [4] Many are fragments from comets or asteroids, whereas others are collision impact debris ejected from bodies such as the Moon or Mars. [ 5 ] [ 6 ] [ 7 ] The visible passage of a meteoroid, comet, or asteroid entering Earth's atmosphere is called a meteor , and a series of many meteors appearing seconds or minutes apart and appearing ...

  3. Comet - Wikipedia

    en.wikipedia.org/wiki/Comet

    A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing.This produces an extended, gravitationally unbound atmosphere or coma surrounding the nucleus, and sometimes a tail of gas and dust gas blown out from the coma.

  4. Planetesimal - Wikipedia

    en.wikipedia.org/wiki/Planetesimal

    While the name is always applied to small bodies during the process of planet formation, some scientists also use the term planetesimal as a general term to refer to many small Solar System bodies – such as asteroids and comets – which are left over from the formation process.

  5. Asteroids, meteors and comets: What are the differences? - AOL

    www.aol.com/news/asteroids-meteors-comets...

    Our solar system is full of floating space debris: Comets, meteors, asteroids and more. What are the differences that make up these various space rocks?

  6. Small Solar System body - Wikipedia

    en.wikipedia.org/wiki/Small_Solar_System_body

    This encompasses all comets and all minor planets other than those that are dwarf planets. Thus SSSBs are: the comets; the classical asteroids , with the exception of the dwarf planet Ceres ; the trojans ; and the centaurs and trans-Neptunian objects , with the exception of the dwarf planets Pluto , Haumea , Makemake , Quaoar , Orcus , Sedna ...

  7. How to watch the Orionid meteor shower, debris from Halley’s ...

    www.aol.com/news/watch-orionid-meteor-shower...

    Meteors from Halley’s comet. As Earth orbits the sun, it encounters the debris trail from Halley’s comet twice a year. The first occurs in May when particles from the comet’s outbound leg ...

  8. List of predicted asteroid impacts on Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_predicted_asteroid...

    This is a list of asteroids that have impacted Earth after discovery and orbit calculation that predicted the impact in advance. As of December 2024 [update] , all of the asteroids with predicted impacts were under 5 m (16 ft) in size that were discovered just hours before impact, and burned up in the atmosphere as meteors .

  9. Asteroid - Wikipedia

    en.wikipedia.org/wiki/Asteroid

    In the main asteroid belt, there appear to be two primary populations of asteroid: a dark, volatile-rich population, consisting of the C-type and P-type asteroids, with albedos less than 0.10 and densities under 2.2 g/cm 3, and a dense, volatile-poor population, consisting of the S-type and M-type asteroids, with albedos over 0.15 and densities ...