WEIRD SCIENCE

Earth used to be purple, new NASA study shows

NASA research finds a new direction in searching for signs of life in the Universe. By Paul Ratner – NASA-funded research says retinal, not chlorophyll, gave the early Earth its color The two pigments co-evolved but retinal came first We should be looking …

 

Tholins: The red goo critical to life in the universe

Carl Sagan—who first coined the term—was tempted to call them “star-tar.” By Matthew Davis –  Tholins are a broad group of organic compounds formed when simpler molecules are irradiated. They are extremely common in our solar system, and studies have shown that their …