Tag Archive for 'Europa'

The surface of Europa looms large in this newly-reprocessed color view; image scale is 1.6 km per pixel; north on Europa is at right. Image credit: NASA / JPL-Caltech / SETI Institute.

Europa: Dark Material on Jupiter’s Moon Could Be Oceanic Salt Discolored by Radiation

May 13, 2015 by News Staff

A new study published in the Geophysical Research Letters suggests the dark material on the surface of Europa – the sixth-closest moon of the planet...

The Hubble image on the left (unlabeled at top left, labeled at bottom left) shows the beginning of the event, which took place on January 24, 2015. From left to right the moons Callisto and Io are above Jupiter's cloud tops. The shadows from Europa (not seen in the image), Callisto, and Io are strung out from left to right. Near the end of the event, approximately 42 minutes later (right-side image), Europa has entered the frame at lower left. Slower-moving Callisto is above and to the right of Europa. Fastest-moving Io is approaching the eastern limb of the planet; its shadow is no longer visible on Jupiter. Europa's shadow is toward the left side of the image, and Callisto's shadow to the right. Missing from the sequence is the moon Ganymede, which was outside Hubble's field of view and too far from Jupiter in angular separation to be considered part of the conjunction. The moons in these photos have distinctive colors. The ancient, cratered surface of Callisto is brownish; the smooth icy surface of Europa is yellow-white; and the volcanic, sulfur-dioxide surface of Io is orange. The apparent fuzziness of some of the shadows depends on the moons' distances from Jupiter. The farther away a moon is from the planet, the softer the shadow, because the shadow is more spread out across the disk. The images were taken with Hubble's Wide Field Camera 3 in visible light. Image credit: NASA / ESA / Hubble Heritage Team / STScI / AURA.

Hubble Sees Triple Transit of Galilean Moons

Feb 6, 2015 by News Staff

The Wide Field Camera 3 on NASA’s Hubble Space Telescope has captured a rare look at three of Galilean moons – Io, Callisto, and Europa –...

NASA Scientists Release Remastered Image of Europa

Nov 22, 2014 by News Staff

A new view of Europa, the sixth of Jupiter’s moons and the fourth largest, has been produced from images taken by NASA’s Galileo spacecraft...

This artist's impression shows Jupiter and its moon Europa using actual Jupiter and Europa images in visible light. The Hubble ultraviolet images showing the faint emission from the newly discovered water vapor plumes have been superimposed, respecting the size but not the brightness of the plumes. Image credit: NASA / ESA / M. Kornmesser / L. Roth, Southwest Research Institute and University of Cologne / J. Saur, University of Cologne / K. Retherford, Southwest Research Institute / D. Strobel and P. Feldman, Johns Hopkins University / M. McGrath, Marshall Space Flight Center / F. Nimmo, University of California, Santa Cruz.

Europa: Huge Water Vapor Plumes Seen Erupting from Jupiter’s Moon

Dec 13, 2013 by News Staff

An international team of astronomers using NASA’s Hubble Space Telescope has discovered strong evidence of giant water-vapor geysers shooting off...

Europa global views in natural and enhanced colors (NASA / JPL / University of Arizona)

Essential Ingredient for Life Found in Abundance on Europa

Apr 8, 2013 by Natali Anderson

A new study published online in the Astrophysical Journal Letters (arXiv.org version) shows that hydrogen peroxide – an important energy supply for...

Based on new evidence from Jupiter's moon Europa, astronomers hypothesize that chloride salts bubble up from the icy moon's global liquid ocean and reach the frozen surface where they are bombarded with sulfur from volcanoes on Jupiter's innermost large moon, Io (NASA / JPL-Caltech)

More Evidence for Salty Ocean on Jupiter’s Moon Europa

Mar 6, 2013 by News Staff

A new study by Prof Mike Brown from the California Institute of Technology and Dr Kevin Hand from the Jet Propulsion Laboratory suggests that salty water...

Arctic Glacier Helps Find Life on Jupiter’s Icy Moon

May 30, 2012 by Sergio Prostak

An American-Canadian team of scientists has discovered a rare landscape that appears to be very similar to one of Jupiter’s icy moons, Europa. Europa,...

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