";s:4:"text";s:4109:" This page showcases our resources for those interested in learning more about ocean worlds. Ganymede was discovered by Galileo Galilei on 7 January 1610 along with the three other Jovian moons Europa, Ganymede is larger than both Mercury and Pluto, and is 2/3 the size of Mars with a diameter of 5,268 km (3,273 miles) – 8% larger than Mercury. It has the highest mass of all planetary satellites and has more than twice the mass of the Earth’s Moon.Originally called Jupiter III by Galileo, Ganymede was named after a suggestion from German mathematician and astronomer Johannes Kepler. In much of the earlier astronomical literature, Ganymede is referred to instead by its Roman numeral designation, The Galilean satellites retain the Italian spellings of their names. The detection of The permanent magnetic moment carves a part of space around Ganymede, creating a tiny The interaction between the Ganymedian magnetosphere and Jovian In addition to the intrinsic magnetic moment, Ganymede has an induced dipole magnetic field.Given that Ganymede is completely differentiated and has a metallic core,Despite the presence of an iron core, Ganymede's magnetosphere remains enigmatic, particularly given that similar bodies lack the feature.The radiation level at the surface of Ganymede is considerably lower than at Europa, being 50-80 mSv (5-8 rem) per day, an amount that would cause severe illness or death in human beings exposed for two months.After formation, Ganymede's core largely retained the heat accumulated during accretion and differentiation, only slowly releasing it to the ice mantle.Several probes flying by or orbiting Jupiter have explored Ganymede more closely, including four flybys in the 1970s, and multiple passes in the 1990s to 2000s.
In 1996, the Hubble Space Telescope let astronomers find that Ganymede had a thin atmosphere of oxygen. Lighter regions are young and smooth (unlike Earth's Moon). Guiding that effort are NASA test directors, or NTDs.
NASA's Lunar Flashlight, a briefcase-sized satellite, or CubeSat, will detect surface ice believed to be at the bottom of craters on the Moon that have never been exposed to sunlight.
The rocket booster segments that will help power NASA’s first Artemis flight test mission around the Moon arrived at KSC. Several smaller worlds likely accreted together to make this moon. However, unlike Earth, Ganymede has little atmosphere to speak of, which means the surface is constantly being bombarded by plasma from Jupiter’s magnetosphere. The next full Moon will peak after midnight on Wednesday morning, Sept. 2, 2020, The Moon will appear full for about three days around this time, from Monday evening through Thursday morning. These grooved regions are a clue that the moon experienced dramatic upheavals in the distan… Director, NASA Planetary Science Division:
However, this anomaly could also be caused by piles of rock at the bottom of the ice.Spacecraft images of Ganymede show the moon has a complex geological history.
Recent Comments