Anita Mitchell, who was married to late NASA pilot Edgar Mitchell, said the Apollo astronaut and many of his colleagues firmly believed that extra-terrestrial life is out there ...

Western officials have accused Russia and its proxies of staging dozens of attacks and other incidents across Europe since ...

The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.

Although the telescope is just getting started on its mission, it has already delivered some impressive snapshots of the dark ...