This was my first approach to the field of extrasolar planets.
Of the 7 planets forming the TRAPPIST-1 system, it may be TRAPPIST-1e that has Earth-like environmental conditions: water oceans, emerged lands, atmosphere and temperatures compatible with life. But like its companions, this planet is tidally locked, so the conditions previously described would only be found on the side that always looks at its star, TRAPPIST-1, a red ultracool dwarf star (M type) with a size slightly larger than the planet Jupiter. Here everything is illuminated by an exclusively red or orange light. At the same time the dark side of the planet will probably be a frozen world with a perpetual night.
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