You may think that time started 13.8 billion years ago at the birth of the universe, but physicists with alternative ...

Scientists have uncovered a fascinating possibility: time at the quantum level may not be strictly one-way. While our everyday experiences make time seem irreversible, fundamental physics suggests ...

Astronomers used an array of telescopes to find the most massive radio jet in the early universe. The celestial object is ...

If you go back in time and kill Hitler, you're not killing the Hitler of your past; you're killing somebody else's. And in that alternate universe, Hitler was always killed by a time-traveling ...

Astronomers have discovered an enormous radio jet from the early universe, extending over 200,000 light-years and powered by ...