YR4, which orbits the sun every four years and periodically crosses Earth's orbit. The nature of its orbit makes it a ...

"Scientifically there's a huge amount we can learn from asteroids," says Alan Fitzsimmons, an astronomer at Queens University ...

It is known as a near-Earth asteroid, meaning its orbit presents ... Earth could be as powerful as a 75 megaton nuclear blast, larger than the Tsar Bomb, which was detonated in the Soviet Union ...

A massive 150-foot airplane-sized asteroid is set to pass Earth tomorrow, prompting NASA to issue a cautionary alert.

The discovery of a massive crater formed by the impact of a meteorite more than 3.5 billion years ago is changing the way ...

The Earth exists in a cosmic shooting ... all heads or all tails — but it was three times higher than that of any other large known asteroid. For skywatchers this was a big deal.

Analysis of samples brought back to Earth from the asteroid Bennu reveal that it has a bizarre chemical make-up and is ...

The rate of stars going supernova near Earth appears to match two mass extinctions -- 372 million years ago and 445 million ...