Multiple choice general knowledge science & technology

A black hole is an invisible, highly dense celestial body with gravity strong enough to keep light from escaping. It is called a black hole because

  1. black holes were named after their discoverer, Richard Black.

  2. it is a big, dark hole in space.

  3. it only attracts black objects.

  4. it always appears dark, since no light can leave it.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A black hole appears dark because its gravitational field is so intense that nothing, including light, can escape from within the event horizon. Since no light can leave the region, it cannot be observed directly - we only detect it through its effects on nearby matter and radiation. Option A is false (black holes are not named after a person), option B is metaphorically incorrect (it's not literally a hole), and option C is nonsensical (black holes attract all matter regardless of color).

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