Ultraluminous X-ray sources (ULXs), the most extreme among binary stars, can aid us to face the following question: how many black holes managed to grow up to 10 billion Solar masses in less than a billion years after the Big Read More …
The first confirmed heartbeat of a supermassive black hole is still going strong more than ten years after first being observed. X-ray satellite observations spotted the repeated beat after its signal had been blocked by our Sun for a number Read More …
Astronomers have found a pair of objects that have been added to a strange object discovered in 2018 that combined to constitute a new class of cosmic explosions. The new type of explosion shares some of the characteristics with supernova Read More …
Astronomers have caught a black hole hurling hot material into space at close to the speed of light. This flare-up was captured in a new movie from NASA’s Chandra X-ray Observatory. The black hole and its companion star make up Read More …
A new study, based on data from ESA’s XMM-Newton and NASA’s Chandra X-ray observatories, sheds new light on a three million light-year long bridge of hot gas linking two galaxy clusters, whose shape is being bent by the mighty activity Read More …
Astronomers from the European Southern Observatory (ESO) and other institutes have discovered a new stellar black hole, and it’s practically in our backyard. Researchers say the black hole is just 1,000 light-years away from Earth — closer to our solar Read More …
In 1572, Danish astronomer Tycho Brahe was among those who noticed a new bright object in the constellation Cassiopeia. Adding fuel to the intellectual fire that Copernicus started, Tycho showed this “new star” was far beyond the Moon, and that Read More …
Astronomers may have discovered a new kind of survival story: a star that had a close interaction with a giant black hole and managed to survive and tell its story through exclamations of X-rays. Scientists recorded the event with the Read More …
In 2018, astronomers observed in high resolution a nova explosion with three different space telescopes: NASA’s Fermi and NuSTAR space telescopes, as well as the Canadian BRITE-Toronto nano-satellite, and they have captured the first direct evidence that most of the Read More …
The last decades, astronomers have assumed that the Universe is expanding at the same rate in all directions. However, a new research, based on data from three X-ray space observatories, indicates that this fundamental assumption might be incorrect. The idea Read More …
