The asteroid, thought to be capable of levelling a city, set a new record in February for having the highest chance -- 3.1 ...

This week, researchers reported on nine rivers and lakes in the Americas that defy hydrologic expectations. Geologists report ...

The cluster, full of more than 2,500 newborn stars that blaze blue in the Hubble image, is in a galaxy with far fewer heavy chemical substances than the Milky Way. It's mostly made of hydrogen and ...

The researchers confirmed that two enormous stars, each more than 20 times the mass of the sun, are growing inside ...