An international team of physicists discovered the largest-ever merger of 2 black holes through a phenomenon known as ...

It's possible, scientists say, that atom-sized black holes were produced during the first second of the universe's existence — and some might've gotten lodged within budding stars.

A NASA spacecraft designed to peer at faraway black holes has snapped a stunning photo of the sun, showing that its sensitive X-ray eyes can investigate mysteries in Earth's own backyard.

A smaller 60-foot-tall NASA spacecraft known as a sounding rocket launched from New Mexico to study the sun's mysterious chromosphere and its corona.

The Hubble Space Telescope’s Planetary Camera captured this black and white view of Jupiter in 1991. It shows the fine detail in the clouds that cover the planet.

A handout image of the sun taken during an artificial solar eclipse provided by the European Space Agency. Against a black background, the Sun’s bright body is covered by a black disc, and blue ...