Tag Archive for 'Galileo'

The internal structure of Io as revealed by the present study. Image credit: Sofia Shen / NASA / JPL / Caltech.

Jupiter’s Moon Io Does Not Have Subsurface Magma Ocean, Study Suggests

Dec 13, 2024 by News Staff

Volcanic activity on Io — the innermost Galilean moon of Jupiter and the most volcanically active body in the Solar System — is unlikely to...

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.

New Research Sheds More Light on Evolution of Europa’s Interior

Jun 19, 2023 by News Staff

Many planetary scientists studying Jupiter’s moon Europa assumed that it formed with a metallic core during or shortly after accretion. New research...

Review of the mechanisms proposed in the literature to explain the emplacement of liquid reservoirs invoked to correspond to a variety of geological features at Europa’s surface. Image credit: Lesage et al., doi: 10.3847/PSJ/ac75bf.

Shallow Lakes in Europa’s Crust Could Erupt, Planetary Scientists Say

Oct 13, 2022 by News Staff

In the search for life beyond Earth, subsurface bodies of water in the outer Solar System are some of the most important targets. That’s why NASA and...

Ridges of possible aeolian origin from the Galileo Solid State Imager. Image credit: McDonald et al., doi: 10.1038/s41467-022-29682-x.

Dune-Like Features Spotted on Jupiter’s Moon Io

Apr 19, 2022 by News Staff

Jupiter’s moon Io is the most volcanically active body in the Solar System, and the body that is known to be most rapidly resurfaced. Surface modification...

This artist’s conception of Europa shows a hypothesized cryovolcanic eruption, in which briny water from within the icy shell blasts into space. Image credit: Justice Blaine Wainwright.

Europa’s Plumes May Originate from Near-Surface Brine Reservoirs, Not Global Ocean

Nov 11, 2020 by News Staff

Europa, the sixth of Jupiter’s moons and the fourth largest, has a subsurface ocean covered by an icy shell. Despite evidence for plumes on the icy moon,...

Artist’s concept of ocean on Jupiter’s moon Europa. Image credit: NASA / JPL-Caltech.

Planetary Researchers Explore Habitability of Europa’s Ocean

Jun 25, 2020 by News Staff

A duo of U.S. planetary scientists has calculated that water in the subsurface ocean of Jupiter’s icy moon Europa could have been formed by breakdown...

Water vapor plumes on Jupiter’s icy moon Europa. Image credit: David Ladd, USRA & NASA’s Goddard Space Flight Center.

Study Provides Additional Evidence for Water Vapor Plumes on Europa

May 19, 2020 by News Staff

NASA’s Galileo spacecraft encountered an active water plume during a flyby of Jupiter’s icy moon Europa in 2000, according to a new study published...

NASA Releases Reprocessed Photos of Jupiter’s Moon Europa

May 5, 2020 by News Staff

The newly-remastered images show the icy surface of Europa, the sixth of Jupiter’s moons and the fourth largest, in enhanced color. This map shows locations...

Ganymede, larger than even Mercury and Pluto, has an icy surface speckled with bright young craters overlying a mixture of older, darker, more cratered terrain laced with grooves and ridges; the large circular feature on the upper right, called Galileo Regio, is an ancient region of unknown origin; Ganymede is thought to have an ocean layer that contains more water than Earth and might contain life; like Earth’s Moon, Ganymede keeps the same face towards its central planet, in this case Jupiter; this image was taken about 20 years ago by NASA’s Galileo probe, which ended its mission by diving into Jupiter’s atmosphere in 2003; currently, NASA’s Juno spacecraft orbits Jupiter and is studying the giant planet’s internal structure, among many other attributes. Image credit: NASA / JPL / Galileo probe.

Planetary Researchers Find Evidence of Ancient Strike-Slip Tectonics on Ganymede

Oct 12, 2018 by News Staff

A new study, published in the journal Icarus, reveals Ganymede — the largest and most massive moon of Jupiter and in the Solar System — appears...

NASA Unveils Radiation Maps of Europa

Jul 25, 2018 by News Staff

Jupiter’s moon Europa is one of the most compelling targets in the search for life beyond Earth. However, its water-ice surface is affected by the harsh...

Artist’s illustration of Jupiter and Europa with NASA’s Galileo spacecraft after its pass through a plume erupting from Europa’s surface. A new computer simulation gives us an idea of how the magnetic field interacted with a plume. The magnetic field lines (depicted in blue) show how the plume interacts with the ambient flow of Jovian plasma. The red colors on the lines show more dense areas of plasma. Image credit: NASA / JPL-Caltech / University of Michigan.

Archival Data from NASA’s Galileo Mission Yield New Evidence of Water Plumes on Europa

May 15, 2018 by News Staff

A new analysis of data collected by NASA’s Galileo spacecraft in 1997 has found strong evidence that the underground ocean of Jupiter’s moon Europa...

NASA Reveals New Results from Galileo’s Historic Flyby of Jupiter’s Moon Ganymede

May 1, 2018 by News Staff

On June 27, 1996, NASA’s Galileo spacecraft made humanity’s first flyby of Ganymede, Jupiter’s largest moon, discovering that it is the only moon...

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...

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...