A new look at TRAPPIST-1e, an Earth-sized, habitable-zone exoplanet

Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention of scientists. This planet orbits the star within the "Goldilocks zone"-a distance where water on its surface is theoretically possible, but only if the planet has an atmosphere. And where there is water, there might be life.