This Earth-sized exoplanet is on a death spiral

Our circumstances here on the wondrous, life-supporting Earth can give us a false understanding of what the universe is really like. But our blue-skied, temperate planet is the extreme exception when it comes to other worlds. There’s nothing remotely like Earth in our solar system, and exoplanet studies reinforce that idea. While some exoplanets have hints of habitability, most exoplanets are extremely inhospitable.