Emily Kwong and Regina Barber of NPR's Short Wave podcast talk about the evolutionary history of kissing, how moss spores fare in space, and new clues about the collision that created the moon.

Earth has a new moon-like object, known as a "mini-moon," orbiting our planet. This phenomenon is a temporary capture of ...

A U.S.-Russian crew of three began a mission to the International Space Station aboard a Russian spacecraft following a ...

Key Findings The moon once dismissed as the solar system's most hostile environment may now sit directly in the path of an ...

There are several frozen moons in our solar system, orbiting the gas giants. Some of them, despite having temperatures that would make Antarctica feel tropical, have liquid water under the surface.

It takes light a single day to travel 16 billion miles. The Voyager 1 probe will need a little longer, just 49 years.

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...

The outer planets of the Solar System are swarmed by ice-wrapped moons. Some of these, such as Saturn’s moon Enceladus, are ...

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

Around 4.5 billion years ago, a dramatic event changed Earth forever. A massive, planet-sized body called Theia slammed into ...

Russia said today that its scientists are planning to use anthropod apes as the next passengers for space vehicles. The statement came as a result of the successful launching of Sputnik II.