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The parent star of one of the most distant planets known has been identified using the Hubble Space Telescope.
The planet itself was discovered indirectly three years ago, exploiting a phenomenon called gravitational microlensing. This is when one star passes in front of another, as seen from Earth. The gravity of the closer star bends the background star's light like a lens, making the background star appear to brighten and then dim over several months as they pass.
