The European Space Agency has launched two atomic clocks on a SpaceX rocket to the ISS to test Einstein's theory of ...

A novel way to find aliens might be through gravitational wave detection, Loeb says. He is interested in laser interferometry ...

On Monday, the European Space Agency (ESA) launched the ACES set of atomic clocks. It will be docked to the International ...

Einstein’s general theory of relativity, which is used to describe the gravity of black holes ... be observed from outside the black hole, according to relativity. (Quantum mechanics introduces ...

The search for alien life has long been focused on detecting signals from distant civilizations, primarily through ...

These series of step-like bursts happen so rapidly that they are difficult to observe as these singularities wink in and out ...

Astronomers have detected a lone black hole drifting through the Milky Way—an unprecedented discovery made possible by ...

To mark the 35th anniversary of the Hubble Space Telescope, Space.com looks at some of the most scientifically significant images that have emerged from the observatory's lens.

Ronald Mallett, professor emeritus at the University of Connecticut, is most known for his theory on how time travel is ...

The strange sight is actually two galaxies, with the light of the second warped around the one at the front as a result of its massive gravity.