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

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

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

In the book version of “Project Hail Mary,” author Andy Weir, known for grounding his fiction in plausible science, describes ...

The Marvel Universe has a rich history, with some of its secrets taking ages before their truth was discovered.

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

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 ...

Octopuses, bees, and dogs all process information differently. Even within the narrow confines of one planet, evolution produced a wide range of nervous systems rather than a single design. A new ...

The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.

What if consciousness isn’t limited to brains like ours? Philosophers Eric Schwitzgebel and Jeremy Pober argue that ...

A biologist specializing in invasive species has partnered with a former Pentagon strategist in pushing NASA to construct a ...