Old Hubble Space Telescope Photos Unlock the Secret of a Rogue Planet

belaUniverse Today2 months ago54 Views

Artist impression of a Jupiter size rogue planet (Credit : NASA/JPL-Caltech)

Astronomers have made a breakthrough by using 25 year old Hubble images to investigate a potential “rogue planet” drifting through space without a host star. When a brief gravitational microlensing event occurred in 2023, researchers discovered Hubble had photographed the same location in 1997, creating an unprecedented quarter century baseline. Finding no stellar companion in the archival data strengthened evidence for a rogue planet with mass between Earth and Saturn, demonstrating the scientific value of space telescope archives for studying these elusive worlds wandering the Galaxy alone.

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