1. Black Holes Anoushka jp anoushka jp VIA Chinmaya Vidyalaya New Delhi

4. Spheres or Funnel shaped? The gravity you feel from an object depends on two things: the object’s mass, and your distance from that object. This means that anyone at a given distance from a massive object — say, a million kilometers — would feel the same force of gravity from it. That distance defines a sphere around an object: anyone on that sphere’s surface would feel the same gravity from the object at the center. The size of an event horizon of a black hole depends on the gravity, so really the event horizon is a sphere surrounding the black hole. From the outside, if you could figure out how to see the event horizon in the first place, it would look like a pitch black sphere. anoushka jp VIA Chinmaya Vidyalaya New Delhi

5. Are Black holes Black/dark? Matter falling into a black hole would rarely if ever just fall straight in and disappear. As more matter falls in, all this junk can pile up around the hole. Because of the way rotating objects behave, this matter will create a disk of material whirling madly around the hole, and because the gravity of the hole changes so rapidly with distance, matter close in will be orbiting much faster than stuff farther out. This matter literally rubs together, generating heat through friction. This stuff can get really hot, like millions of degrees hot. Matter that hot glows with intense brightness… which means that near the black hole, this matter can be seriously luminous. anoushka jp VIA Chinmaya Vidyalaya New Delhi

6. Are Black Holes Dangerous? Most people think the Earth would fall in, sucked inexorably down by the black hole’s powerful gravity. But remember, the gravity you feel from an object depends on the mass of the object and your distance from it. The black hole has the same mass as the Sun. And the Earth’s distance hasn’t changed. So the gravity we’d feel from here, 150 million kilometers away, would be exactly the same! So the Earth would orbit the solar black hole just as nicely as it orbits the Sun now. But, we might possibly freeze to death! Anoushka JP VIA Chinmaya Vidyalaya New Delhi

7. anoushka jp VIA Chinmaya Vidyalaya New Delhi How do astronomers detect where the Black Holes are? Black holes can detected by their gravitational effects on nearby stars or by the intense core of light they produce in the centre of galaxies when astronomers study the speed of the gases in the cores of such galaxies.