Scientists have detected light echoing from behind a black hole for the first time. Caspar/Pixabay
If you know what a black hole is, you re probably aware that it can contain as much mass as billions of stars, compressed into a much smaller space, and have such a powerful gravitational pull that even light can t escape its grasp.
But even though it s not possible to see into a black hole, it is possible to see light that s coming from
behind one. In a paper published July 28, 2021, in the scientific journal Nature, researchers from Stanford University, Penn State University and Netherlands Institute for Space Research (SRON) describe the first-ever observation of light apparently being emitted from the far side of a supermassive black hole located in I Zwicky 1, a galaxy 800 million light-years away from Earth.
Physicists See Light Echoing From Behind a Black Hole for the First Time
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Orphan cloud bigger than Milky Way found in no-galaxy s land by scientists
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UAH physics team finds lonely cloud deep in outer space
A cloud bigger than the Milky Way has been found by a research team at The University of Alabama in Huntsville (UAH) in a “no-man’s land” for galaxies. Author: Jim Steele (UAH) Updated: 10:16 PM CDT July 2, 2021
HUNTSVILLE, Ala. A scientifically mysterious, isolated cloud bigger than the Milky Way has been found by a research team at The University of Alabama in Huntsville (UAH) in a “no-man’s land” for galaxies.
The so-called orphan or lonely cloud is full of hot gas with temperatures of 10,000-10,000,000 degrees Kelvin (K) and a total mass 10 billion times the mass of the sun. That makes it larger than the mass of small galaxies.