Lee Billings
This passage is adapted from Lee Billings, “Astronomers Spy Shadowy Plumes around Europa.” ©2016 by Scientific American, a division of Nature America, Inc. Astronomers using the Hubble Space Telescope have found new evidence that a subsurface ocean within Jupiter’s icy moon Europa may be intermittently venting plumes of water vapor into outer space. The finding suggests Europa’s ocean, thought to be buried beneath perhaps 100 kilometers of ice, may be more amenable to life—and accessible to curious astrobiologists—than previously believed. “If there are plumes emerging from Europa, it is significant,” says study lead William Sparks, an astronomer at the Space Telescope Science Institute in Baltimore, Maryland. “Because it means we may be able to explore that ocean for organic chemistry or even signs of life without having to drill through unknown miles of ice.” Using Hubble’s Space Telescope ...