All Space Articles

If Kevin Costner wanted to make a sequel, he’s got plenty of opportunities. Water is by far the most common molecule in the universe. It’s made of two parts hydrogen and one part oxygen. Hydrogen is element number 1 (both on the period table and in abundance), and has been hanging around since the first 15 minutes of the Big Bang. Oxygen is forged in the hearts of sun-like stars, and spreads around when those stars die and turn themselves inside out. And since sun-like stars are also very popular, oxygen gets quite a boost.

We can debate the status of objects in the solar system all day long, arguing if little Pluto is a planet or not. But to tell you the truth, any planet in any solar system got the short end of the stick. The real winners of the galactic game are the travelers, the roamers, the rogue planets.

After 196 days in space aboard the ISS, NASA astronaut Chris Cassidy, Roscosmos cosmonaut Anatoli Ivanishin, and Roscosmos cosmonaut Ivan Vagner are coming home! Let’s learn the details of their return to Earth.

From the exotic to the just plain odd, our solar system is home to some of the most extreme worlds in the galaxy. But I’m not talking about the planets, I’m talking about their moons. Let’s take a look at the most strange...

NASA’s new James Webb Space Telescope (JWST) was recently hit by a micrometeoroid. One of the 18 golden mirror segments on the telescope was hit, causing some minor damage.

Below are some exciting space exploration highlights!

After the NASA/SpaceX launch experienced a series of delays, Crew-3 is set to lift off no earlier than 9:03 P ET from NASA's Kennedy Space Center tomorrow! Watch SPACE LAUNCH LIVE: CREW-3 LIFT OFF on Science Channel at 8 P ET Wednesday, November 10.

An experimental rocket launched by SpaceX on Wednesday, December 9 exploded after launching 8 miles into the air. Elon Musk says that this test was still a success.

(Updated: May 2, 2021) NASA astronauts Michael Hopkins, Victor Glover, Shannon Walker, and JAXA astronaut Soichi Noguchi completed a successful splashdown on Sunday, May 2, after a 165-day space research mission aboard the International Space Station. Here is what we know about their return to Earth.

NASA Astronauts Bob Behnken and Doug Hurley are scheduled to arrive home from space on Sunday, August 2. Watch SPACE LAUNCH LIVE: SPLASHDOWN on Discovery and Science Channel starting at 1PM ET.

Breaking News! At 12P ET today, October 26, NASA announced a new discovery about the Moon. Here are the agency’s findings resulting from the world’s largest airborne observatory, SOFIA.

Save the date--On May 27th, if everything goes as planned, a rocket will launch from Kennedy Space Center in Cape Canaveral, Florida. Watch SPACE LAUNCH LIVE: AMERICA RETURNS TO SPACE on Discovery and Science Channel starting at 2P ET.

What, exactly, is a “planet”? For ancient astronomers it was pretty easy. When they stared up at the night sky, they saw a) the sun, b) the moon, c) a lot of fixed stars, d) a few wandering points of light. Those vagabonds were the planets. Indeed, our word planet comes from the Greek word for “wanderer”.

On the morning of October 13, William Shatner joined the crew of New Shepard for its second crewed flight, NS-18. Due to a few holds, the scheduled 10A liftoff was delayed by about 50 minutes from Blue Origin's Launch Site One in Texas. Despite the delays, liftoff and touchdown went off without a hitch, making Star Trek star William Shatner the oldest man to go to space.

Boeing’s Starliner capsule launched on Friday. Astrophysicist Paul M Sutter has everything you need to know about the Starliner and its mission.