One type, however, known as a pallasite meteorite is very different. They are made of olive-green crystals that are composed ...

If we cut our Earth in half, we would also see an iron and nickel core in the middle Caroline says, 'This type of meteorite is made from iron, nickel metal and a mineral called olivine. This is a ...

Stony meteorites are made up primarily of silicate minerals, whereas iron meteorites contain mainly metallic iron. Most stony meteorites are magnetic and quite heavy for their size, as they contain ...

Sun-blocking dust from asteroid impact drove the dinosaur extinction The Chicxulub impact 66 million years ago filled the sky with fine silicate dust, which blocked out sunlight and lingered for ...

These features, found in a 3.5 billion-year-old layer of silicate rocks mashed up with older rocks, suggest at least two Archaean impacts. When a meteorite hits the surface, shock waves from the ...