k2-18-b-could-have-dimethyl-sulfide-in-its-air-but-is-it-a-sign-of-lifehttps://www.astronomy.com/tags/alien-life/Alien Life | Astronomy.comhttps://www.astronomy.com/uploads/2025/04/K2-18b_illustration_lowres-1568x823.jpgInStockUSD1.001.00alien-lifeexoplanetsarticleASY2025-04-222025-04-17160937