https://hackerpaper.kaipfister.de/p/1511.05528/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=13708220urn:hackerpapers:mention:1511.05528:13708220Wed, 22 Feb 2017 19:05:44 GMT<p>Absolutely right. Here is a recent paper on exoplanet atmosphere characterization by JWST: https://arxiv.org/abs/1511.05528 -- the overview is at https://jwst.nasa.gov/origins.html As you say, the contrast between seeing (star + planet) during a transit, versus star alone, is enough to identify absorption of infrared light by some chemical species. The simulations in the above paper basically show they can infer some chemical abundances (carbon, oxygen) and some atmospheric parameters (inversion layers) for Neptunes and Jupiters. But probably not for Earths, so not for the system in the OP.…</p><p><a href="https://hackerpaper.kaipfister.de/p/1511.05528/">Paper and discussion history</a>. A mention is not an endorsement.</p>astro-ph.EP