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An Earthling’s guide to planet hunting

Jenna Ahart

created: Oct. 13, 2025, 10 a.m. | updated: Oct. 15, 2025, noon

This general imaging technique, called adaptive optics, has been common practice since the 1990s. Her group, in particular, does so by tackling issues involving wind or the primary mirror itself. The Keck Observatory’s 10-meter primary mirror features a honeycomb structure with 36 individual mirror segments. ETHAN TWEEDIE“In adaptive optics, we spend a lot of time on simulations, or in the lab,” Jensen-Clem says. “At the time, we were saying, ‘Oh, wouldn’t it be really cool to install one of these at Keck Observatory?’” Jensen-Clem says.

2 months ago: MIT Technology Review