Test your understanding with 12 questions. Each answer includes a detailed explanation.
What prevents anything from escaping a black hole?
If our Sun were replaced by a black hole of the same mass, Earth would be sucked in immediately.
What is the event horizon?
What happens at the singularity of a black hole?
What causes Hawking radiation?
Where are supermassive black holes typically found?
Time passes at the same rate everywhere in the universe, regardless of gravity.
What does "spaghettification" describe?
What historic achievement did the Event Horizon Telescope accomplish in 2019?
An astronaut spends 1 hour near a black hole's event horizon. For a distant observer, approximately how much time might pass?
The event horizon of a supermassive black hole would tear an astronaut apart through spaghettification.
Which detection method confirmed the existence of gravitational waves and black hole mergers?
