Discovering Sagittarius A*

Chapter 1

The invisible anchor at the center

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Answer

Chapter 2

Taking the first picture of a monster

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Chapter 3

Extreme physics in the danger zone

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Chapter 4

The past and future of our black hole

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YOUR GOAL

Master of Discovering Sagittarius A*

Ch 3 · Extreme physics in the danger zone

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teacher (Call) In our galaxy's core, extreme! (Response) Yeah, Sgr A* spins! (Call) Warping spacetime, a wild dream, (Response) Like a football, it begins!

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teacher Stretching stars with cosmic spaghettification

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teacher How gravity makes time slow down

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teacher The point of no return

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teacher The powerful magnetic engine of Sgr A*

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Extreme physics in the danger zone

teacher Extreme physics in the danger zone

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How gravity makes time slow down

teacher How gravity makes time slow down

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Fun Fact

Spaghettification term: The term spaghettification was popularized by physicist Stephen Hawking in his famous book A Brief History of Time.

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Stretching stars with cosmic spaghettification

teacher Stretching stars with cosmic spaghettification

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Quiz

What is the radius of Sagittarius A*'s event horizon?

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Gossip

If you fell into a black hole, what would you seek?

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Quiz

What happens to light that gets too close to the event horizon?

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Quiz

What is 'spaghettification' caused by?

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Quiz

What did the Event Horizon Telescope discover spiraling around Sgr A* in 2024?

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Quiz

How does time pass near Sagittarius A* compared to on Earth?

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Quiz

What are the sudden bursts of light and X-rays from the gas around Sgr A* called?

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Quiz

Which physicist's theory of relativity predicted that gravity can slow down time?

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Quiz

What is the scientific term for the boundary of a black hole where nothing can escape?