The chemistry of the rock layers reveals remnants of the meteor itself, which was a primitive type of space rock called a carbonaceous chondrite. It would have measured between 23 and 36 miles (37 ...

Dr Mario Fischer-Gödde and his colleagues say the killer rock was a huge carbonaceous chondrite (C-type) asteroid, a carbon-rich type that is common in the solar system but rarely impacts Earth.

One example is a carbonaceous chondrite (a type of meteorite), also known as CAI in Allende. Scientists believe these were the very first things to become solids after the sun was first formed.

I am unravelling the history of an unusual group of carbonaceous chondrite meteorites that are believed to be similar to a certain group of water bearing asteroids; two of which are the targets of a ...