For the first time, NASA Chandra X-ray telescope has been used to discover a pair of black holes in dwarf galaxies that are ...

A pair of quasars that existed when the universe was only 3 billion years old has been spotted by the Hubble Space Telescope.

This suggests that NGC 5084 is host to a supermassive black hole tipped on its side, and scientists think it could be evidence of a galactic collision in NGC 5084’s recent past.

Officials said the bodies of several victims remain in the plane's fuselage and their "dignified" removal is a main priority.

Patrick Hempen, the now-retired FAA director of aviation accident investigations, said several failures have to happen for a collision like this to occur.

Two of the three soldiers involved in the fatal midair collision between a Black Hawk helicopter and ... “It’s hard to imagine the hole that Liz left will ever be filled,” Seidman said.

At the New Orleans International Airport, three American Airlines flights bound for Washington, D.C., were canceled.

The collision is the deadliest U.S. air crash in 20 years. Here’s what else to know: Helicopter crew identified: The Army on Friday released the names of two of the three aviators in the Black ...

Clues emerging from the moments before an Army helicopter collided with a passenger jet suggest breakdowns in the system ...

aims to within the next decade send a fleet of three space probes into orbit to study gravitational waves, or distortions in space-time caused by violent events such as the collision of black holes.

In 1961, the entire U.S. national team lost their lives in a plane crash en route to the world championships in Prague, Czechoslovakia.