In early April 2019, scientists managed to photograph the black hole using multiple telescopes. What the heck, that black hole?
- A black hole is a space in outer space that has a very strong gravitational force.
- Because their gravity is so strong, black holes absorb everything including light, stars, planets, gas, dust, and other forms of electromagnetic radiation. Everything that has been absorbed cannot come out again.
- Black holes are very difficult to see because they absorb light. But space telescopes with special equipment can help scientists find black holes.
- To find black holes, scientists observe rings of light, celestial bodies, and stars that spin very fast around a shadow/dark spot. The dark dot in the center of the ring of light is known as a black hole.
- Scientists photographed the black hole at the center of galaxy M87 with the worldwide Event Horizon Telescope (EHT).
- The black hole at the center of the galaxy Messier 87 (M87), which was photographed on April 10, 2019, has an enormous mass, which is 6.5 billion times more than the sun.
- In the universe, there are billions of black holes, of different types and sizes. There are three types of black holes, small, medium, and large.
- The smallest black holes are also known as primordial black holes. It is as small as a single atom but has the mass of a mountain.
- Black holes are being often called “stars”. Its mass can reach 20 times greater than the mass of the sun. In the Milky Way galaxy, there are dozens of “star” black holes.
- The largest black holes are called supermassive. This black hole has a mass greater than 1 million suns. Every large galaxy has a supermassive black hole at its center. The supermassive black hole in the Milky Way galaxy is called Sagittarius A.
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