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Whether Ganymede has an ionosphere associated with its atmosphere is unresolved. [24] Ganymede's surface is composed of two main types of terrain, the first of which are lighter regions, generally crosscut by extensive grooves and ridges, dating from slightly less than 4 billion years ago, covering two-thirds of Ganymede.
Zooming In on the Andromeda Galaxy, also known as Gigapixels of Andromeda, is a 2015 composite photograph of the Andromeda Galaxy produced by the Hubble Space Telescope. It is 1.5 billion pixels in size, and is the largest image ever taken by the telescope. [1] At the time of its release to the public, the image was one of the largest ever ...
See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted.
Planetary scientists from the University of Leicester’s School of Physics and Astronomy unveiled new images of Europa and Ganymede, two future destinations for new missions to the giant planet ...
32nd anniversary image - April 2022 – The Image shows an unusual close-knit collection of five galaxies, called The Hickson Compact Group 40. Three spiral-shaped galaxies, an elliptical galaxy, and a lenticular (lens-like) galaxy, these different galaxies crossed paths in their evolution to create an exceptionally crowded and eclectic galaxy sampler.
The largest, Ganymede, is the largest moon in the Solar System and surpasses the planet Mercury in size (though not mass). Callisto is only slightly smaller than Mercury in size; the smaller ones, Io and Europa, are about the size of the Moon. The three inner moons — Io, Europa, and Ganymede — are in a 4:2:1 orbital resonance with
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The new Hubble study fills in more pieces of the puzzle about the Great Red Spot, Fletcher said. While scientists have known that the westward drift of the storm has an unexplained 90-day ...