From R.A.S.Russian Academ

of Sciences

Earthlings know who lives in the largest satellite of Jupiter


The European Space Agency is interested in “population” Ganymede, Callisto and Europa


– The European Space Agency (ESA) has launched an ambitious project JUICE (JUpiter ICy moon Explorer), the purpose of which will become satellites of the giant planet Jupiter. Automatic machine to visit the neighborhood of Callisto, Europa, and finally went out and stayed on the orbit of Ganymede, landed on his lander. His, by the way, is charged to make experts of the Russian Academy of Sciences.

All three satellites are extremely interesting. Especially Ganymede and Europa, which, as shown by previous studies, there are oceans of salt water. And it is possible that there is some life in these oceans. At least serious astrobiologists this possibility is not excluded.Moreover, some of them believe that Ganymede and Europe even more attractive in terms of search of living organisms than Mars.

Ganymede generally similar to the frozen planet – is covered by a thick ice crust. It has an atmosphere in which oxygen is present. It is the largest moon in the solar system – bigger than Mercury. Its radius of 2634 kilometers. In addition, Ganymede has its own magnetic field, has a metallic core, which further makes it look like a small planet.

Scientists are interested in the thickness of the ice cover and the depth of the largest satellite of Jupiter Ocean. They wanted to know if the ocean covers the entire surface or on Ganymede are islands of land. While it is believed that they do not exist, and the local ocean depth reaches 900 kilometers. In other words, if the satellite is in a warm place, it would be a water ball – the planet-ocean. As known in Solaris by Stanislaw Lem.

“JUICE is to clarify how the generated gas giants and their satellites, and to help understand how the moons suitable for life” – the ESA.

– The rich “environment” Ganymede appealing to geologists, astrobiologists, physicists, experts in the study of magnetism and atmosphere – agrees Bunts Emma (Emma Bunce) from Leicester University (University of Leicester), member of the scientific JUICE project team. – I look forward to when to begin the study.

We have to wait for a long time. Start the machine to the Jupiter system is scheduled for 2020. Arrival – 2030.


Ganymede satellite is named after the mythological character Ganymede – handsome young man, the son of the Trojan king.According to myth goes that Zeus, noting handsome, kidnapped him, turning the eagle. I delivered to him to Olympus, where the beautiful young man served “ringleader” and pampered him.

Callisto – the second largest moon of Jupiter – is named after the nymph Callisto, too, beloved of Zeus, who was clearly bisexual. The wife of Zeus, Hera, jealous of lovers and mistresses, Callisto turned eventually into a bear. Zeus then placed her in the sky as the constellation Ursa Major.

Both satellites have opened Galileo and Marius in 1610


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