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New exoplanet HD 20794 d could harbor liquid water
What distinguishes a super-Earth? As "National Geographic" explains, HD 20794 d is significantly larger than Earth—its mass is more than five times greater, and its radius is twice as much.
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HD 20794 d: new hopes for life on a nearby super-Earth
As "National Geographic" explains, HD 20794 d is a planet significantly larger than Earth – its mass is more than five times ...