In the coming decade, JUICE and Europa Clipper radio-science will yield the most accurate estimation to date of the Galilean moons’ physical parameters and ephemerides. JUICE’s PRIDE (Planetary Radio Interferometry […]
Jupiter
Formation Of The Four Terrestrial Planets In The Jupiter-Saturn Chaotic Excitation Scenario: Fundamental Properties And Water Delivery
The Jupiter-Saturn chaotic excitation (JSCE) scenario proposes that the protoplanetary disk was dynamically excited and depleted beyond ~1-1.5 au in a few Myr, offering a new and plausible explanation for […]
Astrobiology Recon Missions: Using Ice-penetrating Radar To Find Liquid Water On Other Worlds
The first clue for finding life on other planets is finding liquid water. The moons of Saturn and Jupiter like Enceladus, Ganymede, Europa, and Callisto are suspected of holding oceans […]
Radio Observations As An Extrasolar Planet Discovery and Characterization: Interior Structure and Habitability
Detection of radio emission from Jupiter was identified quickly as being due to its planetary-scale magnetic field. Subsequent spacecraft investigations have revealed that many of the planets, and even some […]
Atmospheric Isotopes Reveal 4.5 Billion Years Of Volcanism On Io
Sulfur and chlorine isotopes in the atmosphere of Jupiter’s moon Io indicate that it has been volcanically active for the entire 4.57 billion-year history of the Solar System, according to […]
ALMA Spectroscopy of Europa: A Search for Active Plumes
The subsurface ocean of Europa is a high priority target in the search for extraterrestrial life, but direct investigations are hindered by the presence of a thick, exterior ice shell.
Iceworld Morphology: Dome Craters on Ganymede and Callisto May Form by Topographic Relaxation of Pit Craters Aided by Remnant Impact Heat
The icy Galilean satellites display impact crater morphologies that are rare in the Solar System. They deviate from the archetypal sequence of crater morphologies as a function of size found […]
Super-adiabatic Temperature Gradient at Jupiter’s Equatorial Zone and Implications For Water Abundance
The temperature structure of a giant planet was traditionally thought to be an adiabat assuming convective mixing homogenizes entropy.
New USGS Global Geologic Map of Europa Is Now Online
Discovered by Galileo Galilei more than 400 years ago and imaged in detail by the Voyager 2 Galileo spacecraft, Jupiter’s icy moon Europa has been a source of intrigue.
Juno Measures Oxygen Production On Europa
NASA’s Juno spacecraft has directly measured charged oxygen and hydrogen molecules from the atmosphere of one of Jupiter’s largest moons, Europa. According to a new study co-authored by SwRI scientists […]
