Alien life? Why the possibility of exoplanet LHS 1140b emitting helium gas is so exciting https://phys.org/news/2026-09-alien-life-possibility-exoplanet-lhs.html 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology