Day of Remembrance honors fallen astronauts with ceremonies nationwide, including wreath-laying at Arlington National Cemetery led by Jim Free and events at various NASA centers.

Moving at roughly 20,505 miles per hour along the distant world's equator, it’s the fastest known jet stream that wraps around a planet ...

Astronomers discovered supersonic winds on a giant gas planet located over 500 light-years from Earth. In a study released Tuesday in Astronomy & Astrophysics astronomers who have been studying ...

The Hughes Fire near Castaic, California, has burned 10,176 acres, prompting evacuations and school closures across SoCal. Follow Newsweek's live blog.

Kranz was not claiming that failure was never an option; he was insisting that his team must not fail when it mattered most.

Janet Petro has been appointed as the acting administrator of NASA, the US space agency announced after President Donald ...

For months space enthusiasts were fascinated by a small asteroid that was pulled by Earth's gravity and was fondly referred ...

Experts think the comet started breaking up last week, but it's still putting on a show for star gazers for a few more days.