Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

A planet with twice Earth's gravity produces creatures with different skeletal requirements, different muscular architecture, ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...

What if an alien species had a complete evolutionary history stretching billions of years? This deep dive explores the Yaetuans, from microscopic lifeforms to a civilization capable of reaching the ...

Scientists suggest that advanced aliens might not have physical bodies, challenging traditional views of extraterrestrial ...

Alien director Ridley Scott eventually returned to the franchise, but couldn't complete his ambitious plans. Here's what his unmade movie could have been about.

After a two week expedition off the coast of Brazil, an international team of researchers discovered 31 new marine species, ...

Theological debates suggest alien encounters might challenge religious traditionalists more than dismantle faith.

Explaining the passage of time has been a gnarly problem in physics basically forever, but physicist and computer scientist ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals . Unexplained gases on other planets. Things mistaken for UFOs ...

A mind wrapped in skin and bone can feel like the obvious model for consciousness. But that assumption may say more about where you live than about what consciousness really requires.

A column by Winona LaDuke, an Ojibwe writer and economist on Minnesota’s White Earth Reservation. She also is co-curator of ...