Chapter 1
The invisible anchor at the center
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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 4 · The past and future of our black hole
artiteacher Milky Way's Central Black Hole
Deep in our galaxy's heart, oh yeah! / A black hole keeps us all near! / Four million suns it weighs, it's true! / No light can escape its view!
Fun Fact
Fermi Bubbles: The towering Fermi Bubbles are so large they span about half of the visible night sky from Earth, though they are invisible to our eyes.
Quiz
How long ago did the colossal feeding frenzy that created the Fermi Bubbles occur?
Quiz
How much brighter did Sagittarius A* shine during its brief awakening 200 years ago?
Quiz
Which NASA satellite detected the 200-year-old light echo from Sagittarius A* in 2023?
Quiz
With which neighboring galaxy is the Milky Way on track to collide in four billion years?
Quiz
What are the giant gamma-ray structures extending above and below our galaxy called?
Quiz
What will eventually happen to Sagittarius A* and Andromeda's black hole after the galaxies collide?