Zipping toward Earth at around 20,000 miles per hour, the asteroid is due to make its closest approach on Tuesday.

It is with a heavy heart that I announce that NASA Earth Science Communications has directed The Earth Observer to conduct an ...

NASA has set a date for a return to the Moon, as part of the U.S. space agency’s ambitious Artemis program.

The Artemis II mission, which could launch as early as February, is expected to send four astronauts on a trip to the moon, ...

Kicking off the year’s cosmic wonders is the moon, drawing the first astronauts to visit in more than 50 years as well as a ...

On some Mars images, Olympus Mons does not look dramatic at first glance. It sits there quietly, a wide pale rise against ...

Winter often feels like a long stretch of weak light and cold air. The idea that Earth is actually closest to the Sun during ...

Europa has a vast, saltwater ocean beneath its icy shell, with more than twice the amount of water in all of Earth’s oceans ...

Our 24-hour day measures Earth’s rotation relative to the Sun, known as a solar day. This is slightly longer than Earth’s ...

Scientists discover 26 new bacterial species in NASA cleanrooms, revealing surprisingly resilient microbes with potential ...

Here are seven of the most beautiful interacting galaxy images captured by NASA Hubble Space Telescope, showcasing the ...