Astronomy and Space
Kepler-1638 is a G-type subgiant star located about 5,000 light years away in the constellation of Cygnus. One known exoplanet has been found orbiting the star: Kepler-1638b.As of January 2021, Kepler-1638 is the farthest star with a known exoplanet orbiting in the habitable zone.
Dorado.
Electrodynamic tether.
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