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Astronomers spot supernovas whose split light could tell us how fast the universe is expanding
One of the supernovas' light will arrive in another 60 years, while the other's will arrive in 1 to 2 years.
Will two rare supernovas finally tell us how fast the universe is expanding? Perhaps, but we'll have to wait for it for them ...
An extremely early Type II supernova explosion, named after the Titan goddess of dawn in Greek mythology, occurred just 1 ...
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