NASA

Astronaut Joe Acaba, the first astronaut of Puerto Rican heritage, offered support to those affected by the hurricane that struck Puerto Rico.

NASA's Cassini space probe will cap off two decades of discovery in a blaze of glory, breaking up over the sky of Saturn like a meteor.

Follow 11-year-old Anna Paulla's trip of a lifetime to NASA's Johnson Space Center in Texas, with TV star Luciano Huck and NASA astronaut Chris Cassidy.

Millions of Americans plan to watch the August 21 eclipse while scientists are eager to gather data not accessible at any other time.

Two NASA WB-57 jets will streak into the darkness of a total solar eclipse in an attempt to unravel mysteries of the sun and the planet Mercury.

Scientists hope two NASA space telescopes will tell us more about the origins of the universe and the search for life in the cosmos.

A new U.S. stamp is the first stamp depicting a solar eclipse that is printed in thermochromic ink, which changes color when you touch it.

How much do you really know about the Red Planet? Do you want to go there some day? Test your Mars smarts with this quick quiz.

NASA selected 12 people from a record-breaking 18,000 applicants to become America’s next astronaut candidates. Meet a few of them.