A nonresident alien is a noncitizen who has not passed or is exempt from the green card or substantial presence tests.

Sohrab Rahvar and Shahin Rouhani’s recent paper, “Constraining the Lifespan of Intelligent Technological Civilization in the Galaxy,” lays it out bluntly: Advanced civilizations last roughly 5,000 ...

A new sci-fi series from Prime Video could be the most Star Trek-like show that isn't part of the franchise, capturing the ...

But if the original Marathon trilogy from the 1990s — and numerous hints developer Bungie has dropped — are any indication, the new game may introduce something much weirder than rogue robots: alien ...

Over 40 percent of extant large freshwater animals (megafauna), including carp, salmonids, crocodilians, turtles, beavers, and hippopotamuses, have ...

In Amiri’s calculations, Dyson spheres around white dwarfs tend to produce cooler, fainter thermal emission that peaks in the near- to mid-infrared, while M-dwarf cases can radiate more strongly but ...

HOW WAS YOUR National Invasive Species Awareness Week? Chances are, with our modern world of the future spinning wildly out of control, you didn’t know invasive species were a problem. They are.

Shaped by a different biology or culture, other intelligent civilisations – if they’re out there – might understand the ...

Marvel Comics is gearing up to introduce one of the darkest Alien comics ever published. Dubbed Alien: King Killer, this new ...

The most beloved beings from strange new worlds.

On Thursday the U.S. president ordered the release of federal files related to UFOs and aliens, although no evidence of extraterrestrials visiting Earth is known to exist ...

For nearly five decades, Steven Spielberg has helped define what alien stories mean to movie audiences. Sometimes they arrive as cosmic miracles. Sometimes as existential threats. Sometimes as ...