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A diagram depicting habitable zone boundaries across star type with September 2024 data, based on previous habitable zone diagrams. [1] Earth is plotted alongside 42 exoplanets with radii less than 2 times that of Earth or masses less than 5 times that of Earth, making them potentially rocky worlds in the habitable zone.
Internal structure of Europa. The blue represents a subsurface ocean. Such subsurface oceans could possibly harbor life. [55] Europa may have a liquid ocean beneath its icy surface, which may be a habitable environment. This potential ocean was first noticed by the two Voyager spacecraft, and later backed by telescope studies from Earth.
In 2012, scientists introduced a concept to define the habitable orbits of moons. [30] The concept is similar to the circumstellar habitable zone for planets orbiting a star, but for moons orbiting a planet. This inner border, which they call the circumplanetary habitable edge, delimits the region in which a moon can be habitable around its planet.
The oceans of Europa may be habitable, according to a new model developed by NASA. This moon — 3,100 km (1,900 miles) in diameter — is the fourth-largest moon orbiting Jupiter.
The aim of Europa Clipper is to explore Europa in order to investigate its habitability, and to aid in selecting sites for a future lander. The Europa Clipper would not orbit Europa, but instead orbit Jupiter and conduct 45 low-altitude flybys of Europa during its envisioned mission. The probe would carry an ice-penetrating radar, short-wave ...
The spacecraft will reach Jupiter's moon Europa in 2030 and investigate if life could survive there. NASA launched Europa Clipper on Monday, Oct. 14. The spacecraft will reach Jupiter's moon ...
The only ways in which potential life could avoid either an inferno or a deep freeze would be if the planet had an atmosphere thick enough to transfer the star's heat from the day side to the night side, or if there was a gas giant in the habitable zone, with a habitable moon, which would be locked to the planet instead of the star, allowing a ...
A planet's orbit in the circumstellar habitable zone is a popular method used to predict its potential for surface water at its surface. Habitable zone theory has put forward several extrasolar candidates for liquid water, though they are highly speculative as a planet's orbit around a star alone does not guarantee that it has liquid water.