A Black Hole

This article is all about a black hole in a space that has been discovered recently in year 2019. Many Satellites are traveling in space to learn more about black holes. These spacecraft help scientists answer questions about the universe. April 10 went down in history as the day the first ever image of a black hole was released by the event horizon telescope collaboration. The Event Horizon Telescope (EHT) is a large telescope array consisting of a global network of radio telescopes. The EHT project combines data from several very-long-baseline interferometry (VLBI) stations around Earth with angular resolution sufficient to observe objects the size of a supermassive black hole's event horizon. There were 8 telescopes on the Earth’s surface to collect the data.

The world saw something that day which everyone thought was impossible to see. Before that, black hole was the biggest mystery of the universe and many concept were created by peoples which turn out to be myth.

WHAT IS A BLACK HOLE?

A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space .Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.

These black holes can be of three sizes:-

1) The small One :- Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is an amount of matter in an object.

2) The Stellar:- Its mass can be up to 20 times more than the mass of the sun.And maybe there are many stellar present in earth’s galaxy and this Earth’s galaxy is known as “Milky way”.

3) The supermassive:- These are the largest black holes. And these black holes have masses that are more than 1 million suns together.Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.

WHEN AND HOW DO THIS BLACK HOLE FORMED?

According to the scientists, the smallest black hole were formed when the universe began. Stellar black holes are made when the center of a very big star collapse, which causes supernova.A supernova is an exploding star that blasts part of the star into space, and that’s when the supermassive black holes formed.

ARE THIS BLACK HOLES DANGEROUS?

Scientists confirmed that Earth will never fall into the black hole. But it is possible that if a spacecraft go near a black hole it can fall into it, and when anything falls in black hole it is impossible to escape the gravity of it.