The signal extends over a huge swath of space, an area that's 2.5 times bigger than the orbit of Pluto.

The first trailer for Marvel Studios' "Captain Marvel" has landed, and it looks amazing. The new trailer premiered today (Sept. 18) on "Good Morning America." Take a look!

There's nothing new under the sun — or around the moon.

Japanese entrepreneur Yusaku Maezawa has signed an unprecedented deal with SpaceX to be the first private passenger to fly around the moon on a BFR rocket. Here's how the mission will work.

Tantalizing new evidence has suggested that there may be a salty lake below a glacier on Mars.