The fundamental nature of living things challenges assumptions that physicists have held for centuries.

A star’s fatal brush with a supermassive black hole can light up a quiet galaxy. When gravity shreds the star, its gas ...

The Atacama Cosmology Telescope in Chile has released its final batch of data after 15 years — and it proves that the Hubble ...

Physics sets unforgiving limits on how fast anything can move, yet the same laws also leave surprising room for creative ways ...

Scientists have found that time passes slightly faster on Mars than on Earth, a difference caused by gravity and orbital ...

Mars clocks tick 477 microseconds faster per Earth day, complicating future missions and interplanetary timekeeping.