CURRENT AFFAIRS

2019

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Researchers of which country have recently discovered a massive black hole in the Milky Way?
A
India
B
USA
C
China
D
Russia
Explanation: 

Detailed explanation-1: -The black hole was discovered by an international team of scientists using China’s sophisticated Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) telescope. The black hole, LB-1 , is located 15,000 light-years away from Earth.

Detailed explanation-2: -In 1974 American astronomers Bruce Balick and Robert Brown pointed radio telescopes in Green Bank, W.Va., at the center of the Milky Way and discovered a dim speck they suspected was our galaxy’s central black hole. They found it in a slice of sky, known as Sagittarius A, within the constellation Sagittarius.

Detailed explanation-3: -Kareem El-Badry is an astrophysicist with the Harvard-Smithsonian Center for Astrophysics and Germany’s Max Planck Institute for Astronomy. He was the lead writer of a study describing the discovery in Monthly Notices of the Royal Astronomical Society.

Detailed explanation-4: -Two supermassive black holes have been directly imaged by the Event Horizon Telescope: the black hole in the giant elliptical galaxy Messier 87 and the black hole at the Milky Way’s center.

Detailed explanation-5: -In 2022, scientists captured the first photo of Sagittarius A*, the gargantuan black hole at the heart of the Milky Way. The Event Horizon Telescope captured the image in the light of submillimeter radio waves emitted by hot gas swirling around the edge of the black hole.

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