HD 219134B
Three super-Earths found 21 light years from EarthThe transiting super-Earth has a density similar to the Earth's. It is by far the closest transiting planet known today, researchers said.
Jet Propulsion Lab scientists find rocky exoplanet just 21 light-years awayUsing the Spitzer Space Telescoe, scientists at the Jet Propulsion Lab have found HD 219134b, a rocky exoplanet 'just' 21 light-years away.
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