Astrophysicists just realized that 80% of the light in the universe is missing | National Post

LONDON — Astrophysicists are mystified after concluding that 80% of the light in the universe appears to be missing.

The total amount of light in the universe can be measured by tracking changes in hydrogen after exposure to ultraviolet light. The hydrogen becomes ionized and can be seen on large telescopes.

via Astrophysicists just realized that 80% of the light in the universe is missing | National Post.


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