See 6 major spaceport launch sites … from space!

These 6 major spaceport launch sites helped open the space age. Now, satellites orbiting Earth can look back at the very gateways that sent them there.

Opportunity left for Mars on July 7, 2003

NASA's Opportunity rover launched to Mars on July 7, 2003. The rover surpassed all expectations. It officially ended its mission on February 13, 2019.

Circinus the Drawing Compass, Alpha Centauri’s neighbor

Circinus the Drawing Compass is a dim constellation located next to the 3rd brightest star in the sky, Alpha Centauri. It looks like a pair of tweezers.

Puffiest exoplanets yet found are as dense as cotton candy

Astronomers have discovered the 2 puffiest exoplanets known so far. They are similar in size to Jupiter, but have the density of cotton candy.

How a planet survived the death of its sunlike star

Scientists have solved the mystery of how a gas giant planet survived the death of its star. The planet migrated inward after the star's red giant phase.

Ursa Minor the Lesser Bear contains the Little Dipper

Ursa Minor is the Lesser Bear, but you might recognize it as the Little Dipper. Also, its brightest star is Polaris, the North Star.

The Milky Way’s arms might not look as we thought

The Milky Way's arms might be farther away than we thought, meaning our galaxy is likely larger than previously believed. Here's how they made the measurements.

How do fireworks get their beautiful colors?

The red, orange, yellow, green, blue and purple colors exploding in the night sky during a fireworks festival are created by the use of metal salts.

Top 10 cool things about stars that you probably didn’t know

Here's a collection of 10 cool things about stars that you probably didn't know. Big stars, green stars, black holes, stars by the millions, and more!

Dog days of summer: Hottest in July and August

The dog days of summer are named for the Dog Star Sirius - the brightest star in the sky - in the constellation Canis Major the Greater Dog. Learn why here.