If you’re concerned about getting every microsecond out of life, then you might not want to migrate to Mars. Using extremely ...

Time travel has long lived in the realm of fantasy, but a growing body of research is quietly shifting it into a serious ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...

Wormholes are one of science fiction’s favourite cheats. Need characters to cross impossible distances? Skip years of travel?

Time feels like the most familiar thing in the world, yet it hides one of physics’ hardest questions: why do we only remember ...

The shape of the universe is not something we often think about. My colleagues and I have published a new study that suggests ...

After decades of steady progress, computational astrophysicists have reached a major turning point in black hole research. A new study presents the ...

Black holes are among the most extreme objects in the universe, and now scientists can model them more accurately than ever ...

It is shown that, by defining a suitable energy momentum tensor, the field equations of general relativity admit a line element of Yukawa potential as an exact solution. It is also shown that matter ...

A Bäcklund transformation for the Ernst equation of general relativity, published earlier by this author, is used to derive a new large family of vacuum metrics with two commuting Killing vectors from ...