What Is the Habitable Zone? Why “Earth-Like” Doesn’t Always Mean Habitable
A planet can orbit inside its star’s habitable zone and still be hostile to life. Here’s what the Goldilocks zone really tells astronomers.
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What Is an Exoplanet? How Scientists Discover Worlds Beyond Our Solar System
More than 6,200 exoplanets have been confirmed. Here’s how scientists find distant worlds and determine whether any could potentially support life.
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