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Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
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…
Ceres is the largest object in the asteroid belt that lies between the orbits of Mars and Jupiter, slightly closer to Mars’ orbit. Its diameter is approximately 945 kilometers (587 miles), making it the largest of the minor planets within the orbit of Neptune. It is the 33rd-largest known body in the Solar System and the only dwarf planet within the orbit of Neptune. Ceres is composed of rock and ice and is estimated to comprise approximately one third of the mass of the entire asteroid belt. Ceres is the only object in the asteroid belt known to be rounded by its own gravity (though detailed analysis was required to exclude 4 Vesta). From Earth, the apparent magnitude of Ceres ranges from 6.7 to 9.3, peaking once every 15 to 16 months, hence even at its brightest it is too dim to be seen with the naked eye except under extremely dark skies.
Ceres was the first asteroid to be discovered (by Giuseppe Piazzi at Palermo Astronomical Observatory on 1 January 1801). It was originally considered a planet, but was reclassified as an asteroid in the 1850s after many other objects in similar orbits were discovered.
Ceres appears to be differentiated into a rocky core and an icy mantle, and may have a remnant internal ocean of liquid water under the layer of ice. The surface is a mixture of water ice and various hydrated minerals such as carbonates and clay. In January 2014, emissions of water vapor were detected from several regions of Ceres. This was unexpected because large bodies in the asteroid belt typically do not emit vapor, a hallmark of comets.
The robotic NASA spacecraft Dawn entered orbit around Ceres on 6 March 2015. Pictures with a resolution previously unattained were taken during imaging sessions starting in January 2015 as Dawn approached Ceres, showing a cratered surface. — Wikipedia
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France's Macron announces creation of a new space...
on July 14, 2019 at 2:22 pm
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Five reasons future space travel should explore...
on July 8, 2019 at 1:10 pm
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Evidence found that suggests dwarf planet Ceres...
on July 2, 2019 at 1:31 pm
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Gravitational data from Dawn suggests dome on...
on June 11, 2019 at 1:20 pm
An international team of researchers has found evidence that suggests the large dome found on the surface of the dwarf planet Ceres is made of slurry—a mix of salty brine and solid particles. In their paper published in the journal Nature Geoscience, the group describes their study of data from the Dawn spacecraft and what it revealed. […]
Study of mesosiderite zircons suggests Vesta was...
on June 11, 2019 at 1:09 pm
A team of researchers from Australia, Switzerland and Japan has found evidence suggesting that the asteroid Vesta was stuck by a very large rock approximately 4.5 billion years ago. In their paper published in the journal Nature Geoscience, the group describes their study of the asteroid and what they believe is material from it. […]