This Hubble image depicts a small section of the Cygnus supernova blast wave located around 2,400 light-years away. As with Jupiter’s main moons Io, Ganymede, and Europa, Callisto was discovered by … Orbit and Rotation It was found that Callisto responds to Jupiter's varying background magnetic field like a perfectly conducting sphere; that is, the field cannot penetrate inside the moon, suggesting a layer of highly conductive fluid within it with a thickness of at least 10 km. Images of Callisto captured by passing spacecraft show bright white spots standing out against darker regions. Because of the distance beyond the main radiation belt of Jupiter, Callisto also has a reduced tidal influence than the other three moons.

Whether you're doing it for the nerd cred or the pie, this week on #10Things, we've got all the ways you can celebrate #PiDay with NASA. The presence of an ocean might put Callisto as a potential candidate for a location that could support life.Callisto is believed to be around the same 4.5 billion year age as Jupiter, which means that it was probably created when the planet was very young. Didymos B is getting an official name of its own: Dimorphos. Zeus’ wife, Hera, changed her into a bear and then Zeus turned her into a star and put her high up in the sky. Director, NASA Planetary Science Division: Planetary scientist Geronimo Villanueva created the sunset simulations while building a tool for a possible mission to Uranus.

You can create your own red/blue 3D images to print, or look at on a computer screen, using a normal digital camera and some image processing software. Get kids back-to-school ready with Expedition: Learn! The flybys assisted in mapping the surface of Callisto and in finding out that the moon had a thin atmosphere of carbon dioxide.They also found that there was evidence that Callisto may have a subsurface ocean. The icy surface of this satellite is so dominated by impact craters that there are no smooth plains like the dark maria observed on the Moon. Callisto is named for a woman turned into a bear by Zeus in Greek mythology. The evidence of a potential ocean was first depicted in the regular fluctuations of the magnetic field of Callisto as it orbited Jupiter.This implies that there are electrical currents inside the Callisto that the parent planet stimulates.

Galileo’s discovery not only changed the entire concept of science, but made the scientists realize that Earth rotated around the sun.Galileo named the four Jovian moons after a powerful and political Italian family, the Medicis.

The current itself must be created from something that is conductive and this led to the assumption that there was salty liquid water in the form of an ocean under the rocky surface.More recently, scientists believe that the ocean on Callisto may be deeper than was previously assumed, as well as the possibility that the ocean didn’t exist at all. It’s also a deathtrap crawling with giant caterpillars.Callisto gets a mention in Robert A. Heinlein's 1950 novel “Farmer in the Sky.” The book is mostly about Jupiter’s moon Ganymede, but it discusses an atmosphere being created so colonists can live on Callisto.Philip K. Dick, author of “Blade Runner” and “The Minority Report” wrote a short story in 1955 called “The Mold of Yancy” about colonists living in a totalitarian society on Callisto.Lin Carter created a series of eight books in the 1970s called the Callisto series. The books featured a soldier who is teleported to Callisto where he finds an ancient human civilization.

Fun — and even educational — NASA activities to do at home.

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