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 …
A year ago, the Event Horizon Telescope (EHT) Collaboration observed for the first time the supermassive black hole at the center of the nearby radio galaxy M87, finding the dark central shadow that was in agreement with General Relativity, further Read More …
The central region of our galaxy, the Milky Way, contains an exotic collection of objects, including a supermassive black hole weighing about 4 million times the mass of the Sun (called Sagittarius A*), clouds of gas at temperatures of millions Read More …
Astronomers have detected a double (or a binary as it is called) star system that it is flip-flopping between two alter egos using NASA’s Chandra X-ray Observatory and the National Science Foundation’s Karl F. Jansky Very Large Array (VLA). This Read More …
An artistic view of a star tearing apart by a black hole. Image credit: NASA. Astronomers solved the mystery and found the perpetrator, an intermediate-mass black hole that was caught in action tearing apart a star that just happened to Read More …
