Space

A $5 million donation made the state-of-the-art science hub possible.

The bizarre material just got a little less mysterious.

K2-18b orbits a red-dwarf star in the constellation Leo, and it's situated in the perfect zone to have liquid surface water.

Its atmosphere is electric blue.

Imagine trying to start a car that's been sitting in a garage for decades—and the car is 13 billion miles away.

Let's try to wrap our heads around it.

It's been a great year for sky watching, and the universe had a little more in store for us before 2017 ends.

Get ready to feel small: The sun is 99.8 percent of the mass of the solar system. Here are more colossal facts about our star.

Even Carl Sagan, who created it, was turned down by NASA when he asked for one.

The cigar-shaped asteroid is 10 times longer than it is wide and was probably flung from a young stellar system, location unknown.

Woah.

FYI, this ice giant is not pronounced "your anus," but rather, "urine us" … which is hardly an improvement.

Introducing Ross 128 b.

While few explorers like to discuss it, taking a space dump is its own kind of heroism.

The answer isn't so simple.

The asteroid belt tells the story of the creation of the solar system.

It's a great month for skywatching.

"We have been waiting for this day for decades."

Plasma waves, stardust showers, and Jupiter lightning would sound right at home in a haunted house.

And you know what that means: Aliens!! (Kind of.)

It took a full year’s worth of satellite data to make it.

"For me, it feels like the dawning of a next era in astrophysics."

Interplanetary fame, here you come!

Did you know the famous astronomer campaigned for marijuana legalization? Read on for more little-known tidbits about Carl Sagan.