Researchers have spent the past few years watching a black hole re-awaken roughly 300 million light-years away from Earth.

Astronomers have tried two main methods to ... This rotation idea might seem far-fetched, but it’s not entirely new. Famous mathematician Kurt Gödel introduced the idea of a rotating universe ...

From Lowell Observatory to Kitt Peak to Mount Graham, here are the 11 best planetariums and observatories in Arizona and ...

Perched on top of Santorini's sheer cliffs is a world-famous tourist industry worth millions. Underneath is the fizzing risk ...

The German-born physicist’s most famous equation ... the theory also predicted that the universe is expanding, which the astronomer Edwin Hubble confirmed in 1929. Einstein’s general theory ...

For decades, astronomers believed all compact objects like neutron stars and black holes received violent “natal kicks” during their formation. That theory just suffered a fatal blow thanks to an ...

Though they've been a common sight throughout human history, scientists haven't understood quite how far ... spot the butterflies flitting among flowers — with their orange and black wings with ...

This week, dual escalations in Yemen and Ukraine raises sharp questions about America’s strategic priorities and its ability ...