A hypothetical view of the surface of TRAPPIST-1 c, the second planet of the TRAPPIST-1 system, 40 light-years away.
TRAPPIST-1 c is a rocky planet, slightly more massive and slightly larger than the Earth. It is very likely that it has no atmosphere, or only a very thin one. The surface temperature is probably well above 100° C (212° F). The parent star TRAPPIST-1 appears 8 times larger in the sky than the Sun of the Earth, but it is hardly brighter than the Earth's sky just after sunset. This is because the tiny and faint star TRAPPIST-1 emits hardly any light in visible wavelengths. Due to the tidal locking, the star seems to be always at the same place in the sky.
In this representation, the star is in an active phase and is bombarding the planet with additional UV, X-ray and gamma radiation.
We also see the neighboring planet TRAPPIST-1 b in the sky, which has just finished a transit. It is more than twice as large in the sky as the Moon of the Earth. Barely visible in the upper left corner of the Sun is the faint reddish light dot of TRAPPIST-1 d in the sky.