Lifeboat Foundation

When astronomers search the skies for signs of alien life, they tend to focus on planets that are relatively similar to Earth. But while looking for the kinds of life we know exist is a good place to start, different conditions on different planets could have led life down paths that are completely … well, alien. To demonstrate, a NASA-funded study has successfully created a new synthetic genetic system that’s a viable alternative to DNA, made with twice as many “ingredients.”