Both of the black holes are the central engines of what astronomers call "active galactic nuclei," a class of extremely bright objects that...

Washington, Jan 9 (IANS) Using data from NASA's NuSTAR (Nuclear Spectroscopic Telescope Array), a team of researchers has detected two hidd...

High-energy x-rays found for five of the black holes confirmed that they had been hidden by dust and gas.

A compact source of X-rays that sits near the black hole, called the corona, has moved closer to the black hole over a period of just days.

Crude oil rose on Wednesday, trimming the biggest monthly decline since May, as refineries started resuming operations after superstorm San...

Even as pink slips are being handed out at a hectic pace amid economic downturn, some companies are still going out of their way to please ...