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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.
To support an Earth-like atmosphere for about 4.6 billion years (Earth's current age), a moon with a Mars-like density is estimated to need at least 7% of Earth's mass. [20] One way to decrease loss from sputtering is for the moon to have a strong magnetic field of its own that can deflect stellar wind and radiation belts.
In addition to Earth-bound telescope observations, Europa has been examined by a succession of space-probe flybys, the first occurring in the early 1970s. In September 2022, the Juno spacecraft flew within about 320 km (200 miles) of Europa for a more recent close-up view.
A SpaceX Falcon Heavy rocket carrying NASA's Europa Clipper space probe launches from Kennedy Space Center on Oct. 14, 2024, on a mission to orbit Jupiter and study its icy moon, Europa, for signs ...
NASA launched Europa Clipper on Monday, Oct. 14. The spacecraft will reach Jupiter's moon Europa in 2030 and investigate if life could survive there.
"It's certainly true on Earth − deep, deep mines host life, the bottom of the ocean hosts life," he said. "We haven't found any evidence for life on Mars, but at least we have identified a place ...
Understanding planetary habitability is partly an extrapolation of the conditions on Earth, as this is the only planet known to support life.. Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and maintain an environment hospitable to life. [1]
Ahead of the spacecraft is a 1.8 billion-mile journey to Europa on a trajectory taking it past Mars and then Earth, using the planets’ gravity as a slingshot to add speed for the trek.