How would Earth appear to alien astronomers? What would their observations tell them about Earth if they searched the heavens for signs of habitability like we are? It’s a fun thought experiment.
But the experiment is more than just fun: it’s scientifically instructive. In many ways, it’s easier to study our planet and how it appears and then extrapolate those results as far as they go.
A new study shows that finding evidence of life on Earth may depend on the season alien astronomers are observing.Continue reading “If Earth Were an Exoplanet, it Would Still be Tricky to Figure Out if There’s Life Here”