What is the difference between a meteor, a meteorite, a meteoroid and an asteroid? It’s all about location and size. Roughly speaking, an asteroid is a relatively small body (that isn’t a ...

About once a year, an automobile-sized asteroid hits Earth's atmosphere, creates an impressive fireball, and burns up before reaching the surface. Every 2,000 years or so, a meteoroid the size of ...

A fall of rare meteorites in Costa Rica has revealed new details about a similar space rock that fell in Australia 50 years ...

A meteoroid is a small rock, measuring anywhere between a grain of sand to a boulder, that breaks off from a comet or asteroid. These become a meteor when they vaporise in the Earth’s atmosphere.

We call the little chunks meteoroids, the big icy chunks ... In 2013, something similar happened when an asteroid the size of a house exploded over Chelyabinsk in Russia. It smashed windows ...

An asteroid that landed in Russia in 2013 injured 1,500 people – and was just 20 metres in diameter. What could we do if a major threat was detected? Osiris-REx will spend the next year looking ...