The largest known asteroid, Ceres is 623 miles (1,003 km) in diameter, and orbits roughly 260 million miles (420 million km) from the Sun. Italian astronomer Giuseppe Piazzi discovered Ceres in 1801. Since it was the first asteroid ever discovered, it also carries the designation "1 Ceres." In 2006, astronomers also classified Ceres as a dwarf planet.


Asteroids At the dawn of the 19th century, a group of...

Radio Programs

Asteroid Hunting Pointing the way to two asteroids Sunday, July 13, 2014
Watery Asteroid Water vapor from a big ball of rock Friday, May 2, 2014
Moon and Ceres Peeking beneath the skin of an asteroid Saturday, September 8, 2012
Martian Dawn From Mars to the asteroid belt Monday, February 16, 2009

Featured Images

Artist's concept of water vapor around Ceres; HST image of Ceres
Watery Dwarf Friday, May 2, 2014
To the Dawn of the Solar System Monday, June 25, 2007


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