NASA’s Black Hole Field Guide: Episode 1 - Basic Black Holes

Why is it important to understand basic black holes before studying more complex ones?

• They have more mass.

• They are easier to find.

• To understand the fundamental concepts first.

• Because they are more interesting.

What is a key characteristic of a solitary black hole?

• It emits a lot of light.

• It has a lot of mass and a bit of spin.

• It is easy to spot.

• It has no boundary.

Why are solitary black holes difficult to detect?

• They are simple and do not emit light.

• They do not interact with their surroundings.

• They are very small.

• They move very fast.

What phenomenon can be observed around a black hole due to its gravitational effects?

• Light emission

• Lensing effect

• Sound waves

• Magnetic fields

How can black holes be detected indirectly?

• By observing objects orbiting an invisible point

• By the sound they make

• By their color

• By their temperature