As the blizzard of the century continues to pound on my front door I felt inspired to write an entry about another icy world in our solar system that has astronomers’ horns locked in a “heated” debate over ice volcanoes, underground oceans, and the growing religious status of Lime Diet Coke. Ok…so not so much the Diet Coke thing, but Enceladus, one of Saturn’s moons, is a really cool (no pun intended) place that has baffled astronomers for years and now a general consensus has been reached that there is an ocean of liquid water beneath the planet’s surface. This makes Enceladus one of two places in the solar system that scientists suspect of harboring a subterranean ocean; the other is Europa, the legendary Jupiter moon that is science fiction home of the monolith race from 2001: A Space Odyssey. While the debate over the presence of liquid water raged in science labs and UFC octagons across the world, the Cassini probe silently performed a series of flybys in 2008 to search for the presence of negative ions. According to SPACE.com, the sample that provided the data set came from Cassini’s much-publicized plunge through an ice geyser eruption in 2008. These geysers pump gigantic plumes of ice into space which become caught up in Saturn’s gravitational pull and ultimately form the planet’s gigantic e-ring. These negative ions are believed to represent the flow of water and have only been found on Earth, Enceladus, and passing comets. Their discovery has shifted the balance of discussion in favor of a subterranean ocean and should definitely make the planet a prime candidate for the search for life outside of our world.
Enceladus is one of the larger moons in the Saturn system and can easily be seen with a small telescope. I recommend nothing smaller than 3” reflector although I have had some success in seeing the Saturnian moons with a 1.5” department store refractor (bad bad bad). I highly recommend using an astronomy program such as Starry Night or TheSKY to ensure that you know exactly how to identify Enceladus among the other Saturnian moons.
Image Credit: Starry Night Professional
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