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This is a timeline of astronomy. It covers ancient, medieval, Renaissance-era, and finally modern astronomy. Mayan astronomers discover an 18.7-year cycle...

Kepler-1649 is a red dwarf star of spectral type M5V with a radius 0.232 R☉, a mass 0.198 M☉, and a metallicity of -0.15 [Fe/H]. Two confirmed planets...