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Gaia telescope retires: Scientists bid farewell to 'the discovery machine of the decade' that mapped 2 billion Milky Way stars
After 11 years mapping the Milky Way, the European Space Agency's Gaia space telescope has retired. Scientists hailed it as ...
Dark energy may not be constant – this discovery could undermine our entire model of cosmological history
The universe’s expansion is accelerating, not decelerating. Our understanding of how the universe works may need an update.