About 4 billion years ago, Earth began to show signs of the conditions that allowed the first cells to take hold and populate ...

To make matters worse, NASA scientists also discovered that, this year, summer ice in the Antarctic retreated to 764,000 square miles (1.98 million square kilometers) as of March 1, tying for "the ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

Astronomers have discovered two new exoplanets that are similar to other worlds found in the Milky Way, but unlike any in our ...