The invisible universe
The mystery of missing mass
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Mapping the invisible
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The runaway cosmos
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The ultimate fate of the universe
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YOUR GOAL
Master of The invisible universe
Dark matter abundance: Dark matter outweighs regular matter—the stuff making up stars, planets, and humans—by a ratio of five to one.
A hypothetical form of matter that does not interact with light, detected only by its gravitational pull. In 1933, Fritz Zwicky first proposed this unseen material while studying the Coma galaxy cluster.
Which Swiss astronomer first used the term 'dark matter' in 1933 while studying the Coma galaxy cluster?
What would happen to spiral galaxies if dark matter did not exist to provide extra gravity?
Which galaxy did Vera Rubin and Kent Ford study in detail to find the first robust evidence of dark matter?
What did astronomer Vera Rubin observe in the 1970s that proved the existence of dark matter?
What is the term for the normal, visible matter made of protons and neutrons that dark matter is NOT made of?
Approximately what percentage of all matter in the universe is made of dark matter?
