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 1 · The invisible anchor at the center
artiteacher Sagittarius A* Black Hole
At our Milky Way's core, yeah-eah! Sits Sgr A*, oh-oh! Four million Suns, so vast and bright, yeah-eah! Now its event horizon's in plain sight, oh-oh!
Fun Fact
Sgr A* name: The asterisk in Sagittarius A* was inspired by chemistry, where an asterisk denotes an excited atom.
Quiz
What percentage of the speed of light does the star S-2 reach at its closest approach to Sagittarius A*?
Quiz
The diameter of Sagittarius A* would easily fit inside the orbit of which planet?
Quiz
For what discovery did Andrea Ghez and Reinhard Genzel win the 2020 Nobel Prize in Physics?
