Meteorites,Comets and Asteroids

Interplanetary dust colliding with our atmosphere could provide the energy to eject microbes into space.

New data reveal first detected interstellar object to be a rocky, and up to one-quarter mile (400 meters) long and highly-elongated-perhaps 10 times as long as it is wide.

Asteroids key to understanding our Solar System's formation.

Surface features on Ceres -- the largest world between Mars and Jupiter -- and its interior evolution have a closer relationship than one might think.

Hydrogen in comets explains how water moves around Solar System.

The Chicxulub asteroid impact that wiped out the dinosaurs likely released far more climate-altering sulfur gas into the atmosphere than originally thought, according to new research.

Scientists working closely with amateur astronomers have spotted the dusty tails of six exocomets orbiting a faint star 800 light years from Earth.

Minerals containing water are widespread on Ceres, suggesting the dwarf planet may have had a global ocean in the past.

NASA has authorized a second extension of the Dawn mission at Ceres, the largest object in the asteroid belt between Mars and Jupiter.

Astronomers have observed the intriguing characteristics of an unusual type of object: two asteroids orbiting each other and exhibiting comet-like features, including a bright coma and a long tail.