This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

The dazzling lights of the aurora are created when high-energy particles from space collide with Earth's atmosphere. While ...

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

Scientists have discovered the largest organic molecule containing sulfur — a key ingredient for life — ever identified in interstellar space. The researchers call the discovery a “missing link” in ...

Science journalism is reporting on the symptoms of a disease whose origins lie in an economic model that’s at odds with the ...

"We've often seen the 'baby pictures' of planets forming, but until now, the 'teenage years' have been a missing link." ...

There is a rigorous scientific process that scientists followed before setting the Doomsday Clock at 85 seconds this year.

"Interstellar navigation is a complex, systematic engineering task. Breakthroughs in a single discipline cannot support the ...

Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From groundbreaking research aboard the International Space Station to dazzling new ...

New simulations suggest Jupiter holds far more water than once thought, reshaping ideas about how the largest planet formed.

At the 2026 Doomsday Clock announcement, the Bulletin’s Science and Security Board moved the Doomsday Clock forward from 89 seconds to 85 seconds to midnight, citing a failure in global leadership.