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TRAPPIST-1e

Distance: 39 light-years

TRAPPIST-1e is one of the seven known planets orbiting the ultracool dwarf star TRAPPIST-1, and is considered one of the most Earth-like exoplanets discovered to date.

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Overview of TRAPPIST-1e

TRAPPIST-1e is one of the seven known planets orbiting the ultracool dwarf star TRAPPIST-1, located about 39 light-years away in the constellation Aquarius. It is considered one of the most Earth-like exoplanets discovered to date.

Discovery

TRAPPIST-1e was discovered in 2017 by a team of astronomers using the Spitzer Space Telescope. The discovery was significant due to its potential for life, as the planet lies in the habitable zone of its star.

Characteristics of TRAPPIST-1e

Mass: ~0.77 Earth masses
Radius: ~0.91 Earth radii
Orbital period: 6.1 days
Distance from its star: 0.029 AU
Surface temperature: ~251 K (-22°C)

Habitability Potential

TRAPPIST-1e is within the habitable zone of its star, meaning it has the potential to support liquid water on its surface. However, much is still unknown about its atmosphere and surface conditions, which are critical in determining its habitability.