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

Case in point: Scientists from Tokyo University and Hokkaido University in Japan stumbled across some mysterious jet-black ...

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, ...

Some periods in Earth's history are so different from our own that they may as well belong to another planet. Many people are ...

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 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.

Alien life would not be random monster fiction, but shaped by evolution, gravity, light, water, and survival pressure. On red ...

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.