Inside black holes
Chapter 1
The anatomy of a black hole
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Chapter 2
The four cosmic families
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Chapter 3
Extreme physics and spaghettification
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Chapter 4
Photographing the invisible
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YOUR GOAL
Master of Inside black holes
Ch 4 · Photographing the invisible
hue Event Horizon Telescope
We turned the whole Earth into a giant lens, to see the glowing ring of Sagittarius A-star!
Fun Fact
Earth-sized camera: The Event Horizon Telescope combined data from eight observatories to act as a single planet-sized dish.
Glossary
event horizon (noun)
A theoretical boundary around a black hole beyond which no light or other radiation can escape. In April 2019, a global telescope network captured the first image of this boundary in M87.
A theoretical boundary around a black hole beyond which no light or other radiation can escape. In April 2019, a global telescope network captured the first image of this boundary in M87.
Quiz
What observatory first detected gravitational waves from colliding black holes in 2015?
Quiz
What color was the glowing ring of gas in the famous processed images of Messier 87*?
Quiz
What is the name of the global network of radio telescopes used to image black holes?