The spins of some early galaxies could be a clue that the entire observable universe exists within a black hole—except, that ...

A whole universe of hidden galaxies lies just beyond what the eye can see. Thanks to a new generation of space telescopes, ...

According to science, time travel is based on Einstein’s theory of special relativity, which he published in 1905. The German ...

Oxford scientists say they've achieved teleportation From H. G. Wells's The Time Machine to Christopher Nolan's Interstellar, ...

Dark energy is the placeholder name scientists have given to the unknown force causing the universe to expand faster and ...

Before it shut down, a telescope in Chile captured the universe's baby photos, just 380,000 years after the Big Bang. These ...

The European Space Agency's spacecraft Euclid on Wednesday released a treasure trove of new data in its quest to map and ...

Europe's Euclid space telescope, which is on a mission to shed light on the mysteries of dark matter and dark energy, ...

Astronauts Butch Wilmore and Sunita Williams are finally making their way back to Earth after an eight-day mission to space turned into a nine-month-long hiatus at the International Space Station.

Cosmic speed limits can be a major inconvenience but they've rarely stopped science fiction in its tracks.

Albert Einstein is arguably the most influential scientist of the 20th century. His general theory of relativity changed our understanding of space and time, becoming one of the two pillars of ...