Add Yahoo as a preferred source to see more of our stories on Google. The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to the ...

You may have heard a lot of online chatter about Earth's two moons recently, but that doesn't quite get the discovery right. Earth still only has one true natural satellite — our 2,159-mile-wide moon ...

Add Yahoo as a preferred source to see more of our stories on Google. Recently, the online world has been abuzz with speculation that NASA has confirmed the discovery of a second moon in Earth's orbit ...

Earth's radiation budget is a core process of the Earth-atmosphere system, closely linked to global climate and environmental ...