Searching for Life on Earth and in Our Galaxy

Three stories take a look at the struggles of finding extraterrestrial life as well as life on Earth.

IMAGE: An artistic representation of the potentially habitable planet Kepler 422-b (left), compared with Earth (right). CREDIT: Ph03nix1986 / Wikimedia Commons

Everything we study about our planet, our solar system, and even exoplanets seems to come back to one big question: Are we alone? It’s a huge question, really. Perseverance is looking for evidence that Mars had life. Phosphine was in the news last year because it could have been a…