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I heard about this fascinating idea of using the gravitational lensing of our own sun to image the surface of exoplanets: https://www.youtube.com/watch?v=NQFqDKRAROI

It wouldn't look like any telescope you might have ever seen. Once we have a candidate exoplanet we want to take a picture of we would launch a flock of free-flying solar-sail propelled satellites in such an orbit that they get yeeted away from the sun on a trajectory opposite of the target exoplanet. They would travel to the "focal plane" of the sun's gravitational lens where the exoplanet's light is smeared to a ring around the sun which they collaboratively capture. Probably one such a pass wouldn't be enough, so we would need to send such flocks multiple times, like waves following on each other.

What I love about the plan is that it is both super scifi, yet we already have all the components to make it happen if we want to.



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