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

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 ...

SpaceX is no longer talking about the Moon as a brief stopover. The company is sketching out how a fleet of giant rockets, industrial-scale refueling in orbit, and modular habitats could turn the ...

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

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

"The Giant Leap," by astrobiologist Caleb Scharf, is an optimistic account of our widening journey into the cosmos.

On Christmas Eve 1968, Apollo 8 crewmembers Frank Borman, Jim Lovell, and Bill Anders made a live broadcast from orbit around the Moon.

The magic of Christmas could soon manifest in the sky, with northern lights display possible in several U.S. states amid the ...

On Christmas Eve 1968, the Earth received a message from astronauts on a mission like no other - the first around the moon. NASA will return in 2026.

In 20 years, you could be holidaying on Mars. That’s according to Elon Musk, who thinks one million Earthlings, some born ...

On Christmas Eve 1968, Apollo 8 crewmembers Frank Borman, Jim Lovell, and Bill Anders made a live broadcast from orbit around the Moon.