Astronomy
The Hunt for Earth-Like Exoplanets in Habitable Zones
Quick fact
The nearest known exoplanet in a habitable zone, Proxima Centauri b, is only 4.2 light-years away—but it orbits a red dwarf star that could strip away its atmosphere.
Why this is interesting
Imagine a planet just like Earth, orbiting a distant star. Could it be out there, waiting to be found?