A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

When Jasmin Imran Alsous peered down her microscope lens, she expected to see chaos—a mishmash of tangled cells. She was viewing the inside of a male fruit fly's sperm storage organ, using a powerful ...

A provocative study suggests that Jupiter’s frozen moon Europa may not only be hospitable, but that life from Earth could be ...

In his 1989 book Wonderful Life, the late Harvard scientist Stephen Jay Gould imagined rewinding life’s history to an early ...

A lot of money and engineering time has been invested in transporting humans to the red planet, including more than $15 billion on Starship development. Musk envisions a flotilla of several thousand ...

Elon Musk, the first private individual worth more than a thousand billion dollars (one trillion), launched SpaceX stock on ...

Organs, arms, appendages, and other complex tissues usually decay rapidly when they’re separated from their host. Over the years, biologists have seen some success with keeping them alive outside of ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

A quiet Air Force posting in the Nevada desert turns into something far darker when a soldier stumbles into a presence he can’t explain. He describes pale, towering beings with white hair and silver ...

When director Ridley Scott introduced audiences to the Nostromo in 1979’s Alien, he created one of the most enduring horror and sci-fi franchises by merging the cold isolation of deep space with the ...

Since Viking 1 landed in 1976, humans have studied Mars from afar, relying on rovers and orbiters to analyze the planet. But with NASA planning a human mission as early as the 2030s, that will soon ...

On October 19, 2017, a Canadian astronomer named Robert Weryk was reviewing images captured by a telescope known as Pan-STARRS1 when he noticed something strange. The telescope is situated atop ...