Supermassive black holes
The first-ever photo of a black hole, taken using a global network of telescopes conducted by the Event Horizomore
The collision of two black holes - a tremendously powerful event detected for the first time ever by the Lasermore
Giant plumes of radiation seen in X-rays from Chandra (purple) and radio data from the Very Large Array (orangmore
A ring of stars circling Sagittarius A*, the Milky Way's central black hole, shows a combination of infrared amore
A composite image shows the jet from a black hole at the center of a galaxy striking the edge of another galaxmore
NASA's Chandra X-ray Observatory image of an extraordinary outburst by a black hole in the spiral galaxy M83, more
A composite image of a galaxy illustrating how the intense gravity of a supermassive black hole can be tapped more
The galaxy cluster PKS 0745-19 is shown in this NASA composite image containing X-rays from Chandra (purple) amore
One of the lowest mass supermassive black holes ever observed in the middle of a galaxy located in the middle more
This 400 by 900 light-year mosaic, released January 9, 2002, of several Chandra observatory images of the centmore
Israeli Prime Minister Benjamin Netanyahu secures a clear path to re-election, with religious-rightist parties set to hand him a parliamentary majority.
Twins are common in the Yoruba ethnic group that dominates southwest Nigeria, especially in Igbo Ora, where a banner welcomes visitors to the "twins capital of...
Our top photos from the last 24 hours.
Some relatives made the painful trip to the crash scene where 157 people from 35 nations were killed after take-off from Addis Ababa.