2. It was John Mitchell who actually very first proposed the idea of ‘dark stars’ or object. Later, in twentieth century the word ‘black hole’ was coined.
3. Usually the life cycle of most of the stars wind up being a white dwarf or a neutron star, however, black holes are regarded as the last evolutionary stage in the life span of a star.
4. If the creation of a black hole has taken place, it can carry on to grow by ingesting additional matter.
5. Since black holes have strong gravitational force which pulls all the light into its center, they cannot be seen.
6. You can find mainly three kinds of black holes namely stellar, supermassive and miniature black holes, according to their mass.
7. Astronomers are confident that our own Milky Way galaxy features a supermassive black hole at its middle.
8. Black holes follow the laws of gravity and therefore in order to impact the earth, the orbit of a black hole would have to be very near to the solar system, which is not likely.
Black holes are the strangest things in the Galaxy. A black hole does not have a surface, such as a star or planet. Instead, it is an area of space in which matter has collapsed in on itself. This catastrophic collapse leads to a huge amount of mass getting concentrated in a remarkably small area.
Black holes give off x-ray radiation and get smaller and smaller till they evaporate or disappear.
The gravity round the hole of a black hole is so powerful that NOTHING can make its way back out after a critical distance.
The critical distance where nothing can escape is known as the Event Horizon.
Even light cannot get back out of a black hole following crossing the Event Horizon.
Most black holes are formed from the death of huge stars (bigger than the sun) that run out of fuel and cannot maintain its nuclear reaction. The star loses the force driving itself outward and is overcome through the force of its own gravity pulling inward. Eventually, the star has a lot gravity and is so compacted that it consumes itself until there is nothing left however a hole in the fabric of space time, produced by the gravity remaining from the star.
Although black holes cannot be seen, we know they exist from how they affect nearby stars, dust and galaxies. Most of them are encircled by discs of material. As the discs swirl around them like a whirlpool, they become very hot and emit X-rays.Black holes come in a variety of sizes. Most of them are only a few times more huge than the Sun.