Webb Telescope Observations Suggest Habitable Planets May Be Rarer Than Previously Thought
About 40 light-years from Earth, a set of seven Earth-sized planets are orbiting a star called TRAPPIST-1. Now, scientists studying the system with the Webb Space Telescope have found one of them, TRAPPIST-1 c, either lacks an atmosphere or has a very thin one, indicating that habitable planets may be fewer and...