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Ever since a massive subsurface ocean was discovered under the ice on Saturn’s moon Enceladus, scientists have sought to uncover the reason behind the existence of liquid water on a world that should be frozen solid. However, a new study not only illustrates what may be the mechanism behind the presence of Enceladus’ liquid water, but also that the process has been going on for billions of years — more than long enough for life to gain a foothold there.
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Asteroid 3122 Florence, a 4.5 kilometer (2.8 mile) wide near-Earth object, made a close pass to Earth on September 01, 2017, treating researchers with the closest known approach to Earth of an asteroid of this size. Thankfully, unlike recent close brushes with substantially smaller rocks, Florence’s orbit brought it no closer to us than 7 million kilometers (4,350,000 miles), more than eighteen times farther out than the Moon’s orbit.
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NASA has announced that they have confirmation that Saturn’s moon Enceladus has a food source that could support potential microbial lifeforms. This crucial ingredient accompanies Enceladus’ grocery list of elements needed to support life: carbon, hydrogen, nitrogen, oxygen, organic molecules, and of course, liquid water.

"Almost all of the conditions that astrobiologists have identified for habitability are present on Enceladus: water, organics, and a chemical energy source," explains Hunter Waite, from the Southwest Research Institute. "The only things that are left on the checklist are phosphorus or sulfur."
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