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NASA: Saturn's moon Enceladus could support life
NASA

Researchers unveiled evidence of hydrogen plumes on Saturn's moon Enceladus that are similar to deep sea hydrothermal vents on Earth that support primitive life. According to Linda Spilker, a Cassini Project scientist at NASA's Jet Propulsion Laboratory:

"The hydrogen is coming from a hydrothermal vent on the seafloor of Enceladus, the hydrogen could be a source of energy for microbes that might be in Enceladus' ocean."

Potential for life on Jupiter's moon Europa, too: Hubble Space Telescope discovered a water plume on the warmest part of Europa's surface.

Why it matters: The most likely locations for life beyond Earth in our solar system may be these two moons.