You
may have heard about the recently announced NASA discovery of 7
earth-sized worlds orbiting an ultra-cool dwarf star. The system is
called TRAPPIST-1, named after the Transiting
Planets and Planetesimals Small Telescope (TRAPPIST) in Chile, and is
40 light years away from earth. To give you a small idea of how far
that is, if there are aliens in the TRAPPIST-1 system, they are just
now receiving our TV broadcasts from 1970. Still, this system is
considered relatively close to us, and scientists are excitedly
trying to determine if any of the planets have an atmosphere or water
on the surface. An interesting feature of the system is that the
planets are thought to be tidally locked with their sun—meaning
that one side of the planet is always facing the sun, producing a
permanent daytime side and a permanent night-time side.
Coincidentally, the Reln planet of Sardos in the Solar Echoes
universe is also tidally locked with its sun, and its influence upon
Reln life is significant. Imagine what it would be like to live in
such a place!
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