Asteroid Belt

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Legacy of NASA’s Dawn, Near the End of its Mission (NASA/JPL)
Dawn Mission (NASA/JPL)
Dawn Spacecraft (Wikipedia)



Physical Realm
Universe Astronomical Instrument
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid


These are organized by a classification scheme developed exclusively for Cosma. More…



Planets & Planetary Systems Internet Resources (Library of Congress)


Asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets. The asteroid belt is also termed the main asteroid belt or main belt to distinguish it from other asteroid populations in the Solar System such as near-Earth asteroids and trojan asteroids. About half the mass of the belt is contained in the four largest asteroids: Ceres, Vesta, Pallas, and Hygiea. The total mass of the asteroid belt is approximately 4% that of the Moon, or 22% that of Pluto, and roughly twice that of Pluto’s moon Charon (whose diameter is 1200 km). — Wikipedia

Encyclopædia Britannica



Planetary Science (NASA/JPL)


WorldCat, Library of Congress, UPenn Online Books, Open Library



Planets and Dwarf Planets (Ask an Astronomer, Cornell University)
Asteroid Belt (Cosmos4Kids)



International Astronomical Union (IAU)
Minor Planet Center (International Astronomical Union)
The Planetary Society


Science News, NPR Archives








More… - latest science and technology news stories internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Astronomers predict bombardment from asteroids...
    on May 29, 2020 at 1:20 pm

    The planetary system around star HR8799 is remarkably similar to our solar system. It has four gas giants in between two asteroid belts. A research team led by RuG and SRON used this similarity to model the delivery of materials by asteroids, comets and other minor bodies within the system. Their simulation shows that the four gas planets receive material delivered by minor bodies, just as in our solar system.

  • Asteroids Ryugu and Bennu were formed by the...
    on May 28, 2020 at 12:20 pm

    What is the origin of the asteroids Bennu and Ryugu, and of their spinning-top shape? An international research team led by Patrick Michel, a CNRS researcher at the Laboratoire Lagrange (CNRS/Observatoire de la Côte d'Azur/Université Côte d'Azur) and Ronald-Louis Ballouz from the University of Arizona, proposes an answer to this question in an article published in Nature Communications on May 27, 2020.

  • Why astronomers now doubt there is an...
    on May 26, 2020 at 11:53 am

    Planet Nine is a theoretical, undiscovered giant planet in the mysterious far reaches of our solar system.

  • Mystery of lava-like flows on Mars solved by...
    on May 18, 2020 at 3:00 pm

    The mystery of some lava-like flows on Mars has been solved by scientists who say they are caused not by lava but by mud.

  • When baby planets melt: Searching for the...
    on May 8, 2020 at 12:50 pm

    Let's start at the beginning. Before humans, before Earth, before any of the planets existed, there were baby planets—planetesimals. Coalesced from dust exploded outward by the solar nebula, these blobs of material were just a few kilometers in diameter. Soon, they too aggregated due to gravity to form the rocky planets in the innermost part of the solar system, leaving the early details about these planetesimals to the imagination.