Harvard astrophysicist Avi Loeb argues 3I/ATLAS and other interstellar objects may hint at alien technology, drawing fame, ...

The strangely shaped object - snapped by NASA's Opportunity rover - has resurfaced and reignited wild theories about little green men on the Red Planet ...

NBC News' Gadi Schwartz talks to NASA program manager Carlos García-Galán about the moon base initiative and the agency's ...

NewsNation will stream the announcements from this story at 2:30 p.m. ET/1:30 C. The moon base is a core part of the Artemis program, which aims not only to return humans to the moon but to establish ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

NBC News’ Gadi Schwartz previews the new exhibit at the California Science Center, where visitors will soon be able to view ...

In 1988, the Soviet Union launched two of its most ambitious spacecraft ever built not toward Mars itself, but toward one of ...

The planet Mars is home to many wonders waiting to be discovered by humans in the coming years. Experts recently discovered ...

An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar ...

Latest update on 3I/Atlas: Could the interstellar object be an alien spaceship? The silence by NASA, ESA and China on 3I/Atlas ever since it flew by Mars has raised concerns about the nature of the ...

Astrophysicist and science communicator Neil DeGrasse Tyson, 67, dropped a bombshell and told the government to “show the alien” while speaking on “The Fox News Rundown." ...