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. The sun is dawning on Earth behind it. Numerous stars and galaxies are in the background.
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…

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