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I-tell-you-hwat t1_j8r7o4z wrote

Reply to comment by PickleJesus123 in The Nancy Grace Roman Space Telescope - the next major step in astronomy that will help unlock the secrets of the universe's expansion and dark energy. by upyoars

They can’t do anything more with dark energy until it is “found/discovered”

It’s just a hypothesis because they know there is something there that’s doing something about the expansion. Until dark energy, whatever it may actually be, is found it is just a sort of variable in a math equation.

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