Calculating the total mass of the universe is not simple, because most of the mass is invisible. In a pie chart of the contents of the universe, only 5 percent is normal matter, atoms that make up all ...

Add Yahoo as a preferred source to see more of our stories on Google. Merging black holes generate gravitational waves, which astronomers can track. SXS, CC BY-ND Black holes are massive, strange and ...

Cardinal Raymond Burke and Archbishop Salvatore Cordileone will celebrate the solemn pontifical Mass in the traditional Latin rite. Archbishop Salvatore Cordileone of San Francisco swings a censer ...

NASA's Hubble Space Telescope and NASA's Chandra X-ray Observatory have teamed up to identify a new possible example of a rare class of black holes. Called NGC 6099 HLX-1, this bright X-ray source ...

Scientists have observed a new type of black hole that is too heavy to have been born from a star but still too slim to act as an anchor for an entire galaxy. These black holes are being being ...

New findings about intermediate-mass black holes could shed light on some of the universe’s more mysterious components. In a recently published paper, a group of scientists have found new evidence of ...

Black holes are generally grouped into three sizes: stellar-mass black holes, which are about five to 50 times the mass of the sun; supermassive black holes, with millions to billions of times the sun ...

In the world of black holes, there are generally three size categories: stellar-mass black holes (about five to 50 times the mass of the sun), supermassive black holes (millions to billions of times ...

New studies reveal clues about elusive intermediate-mass black holes, bridging the gap between stellar and supermassive types in black hole evolution. (Nanowerk News) In the world of black holes, ...

Intermediate-mass black holes—somewhere between stellar-mass and supermassive—are the rarest type of black hole in the universe. 300 of these elusive black holes were recently observed by NSF ...

Within the Dark Energy Spectroscopic Instrument's early data, scientists have uncovered the largest samples ever of intermediate-mass black holes and dwarf galaxies hosting an active black hole, more ...