2 Often Overlooked Reasons Why Earth Is a Rare Host to Life

Are we alone in the universe? Maybe yes.

Artist’s conception of Earth from space. Source: Storyblocks.

Using data collected from the Kepler Space Telescope, astronomers estimate that there are 300 million potentially habitable exoplanets — planets outside our Solar System — in our Galaxy. And authors of this report intentionally gave a conservative estimate. Astronomers classified an exoplanet as…