The National Reconnaissance Office, which operates spy satellites, has offered some of its old hardware to NASA. 

They had two unused telescopes the same size as the Hubble, but they were built to point down at the Earth, instead of out towards the cosmos. 

NASA conducted an investigation to see how powerful these telescopes were and figure out a way to put them to good use.

A group of astronomers came up with a plan, which was recently presented at a meeting at the National Academy of Sciences in Washington. 

The plan is to use one of the telescopes to investigate dark energy, which is believed to be the reason for the expansion of the universe speeding up. Discovering more about the nature of dark energy could change the face of physics as we know it, and how we think about the fate of the universe.

If this plan is approved, it will save hundreds of millions of dollars and years of development time towards the study of the mysterious dark energy, which NASA had previously predicted it could not begin until at least 2024. 

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