Planetary habitability in the Solar System

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Life in the universe
Outline
Planetary habitability in the Solar System
Venus Earth Mars Europa Enceladus Titan
Life outside the Solar System
Habitable zone Potentially habitable exoplanets Galactic habitable zone
Habitability of...
Binary star systems Natural satellites Neutron star systems Red dwarf systems K-type main-sequence star systems Yellow dwarf systems F-type main-sequence star systems
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Planetary habitability in the Solar System is the study that searches the possible existence of past or present extraterrestrial life in those celestial bodies. As exoplanets are too far away and can only be studied by indirect means, the celestial bodies in the Solar System allow for a much more detailed study: direct telescope observation, space probes, rovers and even human spaceflight.

Aside from Earth, no planets in the solar system are known to harbor life. Mars, Europa, and Titan are considered to have once had or currently have conditions permitting the existence of life. Multiple rovers have been sent to Mars, while Europa Clipper is planned to reach Europa in 2030, and the Dragonfly space probe is planned to launch in 2027.