10 Amazing Scientific Truth About Black Holes - Physics-Astronomy.org

10 Amazing Scientific Truth About Black Holes

Black holes are the only objects in the space that can trap light by sheer gravitational force. Astronmers think they are formed when the corpse of a huge star collapses in on itself, becoming so dense that it warps the fabric of space and time.
And any matter that crosses their event horizons, also recognized as the point of no return, spirals helplessly toward an unknown fate. Despite decades of research, these monstrous cosmological phenomena remain shrouded in mystery.
s are like cosmic vacuums that suck in the space around them when, in fact, black holes are like any other object in space, albeit with a very strong gravitational field.
If you replaced the Sun with a black hole of equal mass, Earth would not get sucked in – it would continue orbiting the black hole as it orbits the Sun, today.
Black holes look like they're sucking in matter from all around, but that's a common misconception. Companion stars shed a few of their mass in the form of stellar wind, and the material in that wind then falls into the grip of its hungry neighbour, a black hole.
Einstein didn't find out the existence of black holes – though his theory of relativity does predict their formation. Instead, Karl Schwarzschild was the first to use Einstein's revolutionary equations and show that black holes could indeed form.
He accomplished this the same year that Einstein released his theory of general relativity in 1915. From Schwarzschild's work came a term called the Schwarzschild radius, a measurement of how small you'd have to compress any object to create a black hole.
Long before this, British polymath John Michell predicted the existence of 'dark stars' so huge or so compressed that they could possess gravitational pulls so strong not even light could escape; black holes didn't get their universal name until 1967.
10 Amazing Scientific Truth About Black Holes

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