New observations of the first black hole ever detected have led astronomers to question what they know about the Universe’s most mysterious objects. Published in the journal Science, the research shows the system known as Cygnus X-1 contains the most massive stellar-mass black hole ever detected without the use of gravitational waves. Cygnus X-1 is ...
When you look up at the night sky at the galaxies, how do you know whether the specks of light that you see are bright and far away, or relatively faint and close by? One way to find out is to compare how much light the object actually emits to how bright it appears. The ...
Astronomers have found the best evidence for the perpetrator of a cosmic homicide: a black hole of an elusive class known as “intermediate-mass,” which betrayed its existence by tearing apart a wayward star that passed too close. Weighing in at about 50,000 times the mass of our Sun, the black hole is smaller than the ...
An international team of astronomers, led by the University of Southampton, has used state-of-the-art cameras to create a high frame-rate movie of a growing black hole system at a level of detail never seen before. In the process, they uncovered new clues to understanding the immediate surroundings of these enigmatic objects. The scientists published their work ...
Two University of Hawai’i at Mānoa researchers have identified and corrected a subtle error that was made when applying Einstein’s equations to model the growth of the universe that didn’t take into account certain characteristics of dark energy. Physicists usually assume that a cosmologically large system, such as the universe, is insensitive to details of ...
An international team of scientists has just discovered two massive bubbles at the center of our Milky Way Galaxy. The bubbles appear to be joined in the shape of an hourglass. It is hypothesized that these are the remnants of a huge cosmic explosion that took place in the galaxy some 7 million years ago. ...
Even though the black hole at the center of the Milky Way is a monster, it’s still rather quiet. Called Sagittarius A*, it’s about 4.6 million times more massive than our Sun. Usually, it’s a brooding behemoth. But scientists observing Sgr. A* with the Keck Telescope just watched as its brightness bloomed to over 75 times normal for ...
Gravitational-wave researchers at the University of Birmingham have developed a new model that could help astronomers track down the origin of a heavy black hole nursery in the Universe. Black holes are formed following the collapse of stars and possibly supernova explosions. These colossally dense objects are measured in terms of solar masses (M⊙) — ...
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