GENERAL KNOWLEDGE

Detailed explanation-1: -At intermediate speeds you will orbit the black hole in a complicated pattern. There is exactly one launch speed that will put you on a circular orbit. This provides a stable vantage point if you start far from the black hole, but it is like playing Russian roulette if you start too close.

Detailed explanation-2: -The period is proportional to the black hole mass, so it would be 1.2 seconds for a 10, 000 solar mass black hole, 2 minutes for a million solar masses, or 34 hours for a billion solar masses. An outside observer would think our period was twice as long.

Detailed explanation-3: -Ripped apart: The Earth would stand no chance if it encountered a rogue black hole; the cosmic black hole’s tidal forces would easily rip the planet apart. Lost in space: Matter piles up in a superheated, rapidly spinning disc before plunging through the horizon of a black hole, never to reappear again.

Detailed explanation-4: -But it was the one they wanted most. Sagittarius A* is our own private supermassive black hole, the still point around which our galaxy revolves. Black holes trap everything that falls in, including light, so they are, in a very real sense, unseeable.