On Thursday, astronomers announced the first observations of the effect of a black hole’s gravitational redshift — light coming from a star in the gravitational field near a black hole looked redder than it would’ve outside the black hole’s influence.
How We Discovered the Black Hole at the Center of Our Galaxy
Jul 26, 2018 12:00 PMOct 24, 2019 7:37 PM
An image of the area surrounding Sagittarius A*, the supermassive black hole at the center of the Milky Way galaxy, in X-ray and infrared light. (Credit: X-ray: NASA/UMass/D.Wang et al., IR: NASA/STScI)
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