microlensing

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A scrappy little astronomical community is using "Microlensing," a form of gravitational lensing, to reveal Earth-sized worlds, hidden black holes, and a host of mysterious phenomena in space. Microlensing alignments are short-lived compared to larger lenses that endure far beyond human timescales.

An entire substellar system consisting of a potentially rogue planet with a companion massive as Jupiter was detected about a decade ago through microlensing (OGLE 2012-BLG-0358L).