Physicist and artist unveil designs for warp-speed spacecraft

The technology needed to create a faster-than-light spacecraft doesn't exist yet. Will a spacecraft like this one someday carry humans to the stars?

Mercury passing in front of the sun, seen from Mars

Transit of planet Mercury across the sun on June 3, as seen from Mars by a camera on the Curiosity rover.

Solar maximum is back!

Solar Max has arrived, but this "Mini Max" is not like any other solar maximum of the Space Age.

Far side of the moon mystery solved

When spacecraft first transmitted the images of the moon's far side to Earth, we saw the lunar farside lacks the large dark areas called maria, or seas. Why?

X2.2 solar flare June 10

This flare is classified as an X2.2 flare. X-class denotes the most intense flares, while the number provides more information about its strength.

Astronauts aboard the ISS on why their job is awesome and what they’re doing

Do these guys have the coolest jobs in the universe?

Photos: Russian cargo craft undocks from ISS

A look at the departing Russian cargo spacecraft from an ISS window as it undocked this morning, and a look back at the ISS from the cargo spacecraft.

First Vine from space

The first-ever Vine from space condenses the ISS’s 92-minute lap around the Earth into six seconds.

Moon formed from Earth collision with planet-sized body: New evidence

The theory that the moon formed when a planet-sized body named Theia crashed into Earth is supported by new evidence using samples from Apollo missions.

Asteroid nicknamed Beast to fly past Earth June 8

Once they looked, astronomers began finding many asteroids near Earth. The one passing Sunday, June 8 is an especially big one, found only two months ago.