A NASA NIAC project will try to Mapping Alien Continents using formation-flying optical interferometer. Two hierarchical nullers ~100 km apart that first suppress the host star by ~10¹⁰ in visible light, then combine the leftover planet light as a Michelson interferometer. That baseline gives an angular resolution of order 1 µas at 500 nm. An ...

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Link :
https://www.nextbigfuture.com/2026/09/space-telescope-interferometer-to-image-exoplanet-continents.html