Jupiter: the "King" and His Moons
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Thebe-PIA01075.jpgThebe67 visiteOriginal caption:"These 2 images of the Jovian moon Thebe were taken by Galileo's solid state imaging system in November 1996 and June 1997, respectively. North is approximately up in both cases. Thebe, whose longest dimension is about 116 Km (or 72 miles) across, is tidally locked so that the same side of the satellite always points towards Jupiter, similar to how the nearside of our own Moon always points toward Earth. In such a tidally locked state, one side of Thebe always points in the direction in which Thebe moves as it orbits about Jupiter. This is called the "leading side" of the moon and is shown at the left. The image on the right emphasizes the side of Thebe that faces away from Jupiter (the so-called "anti-Jupiter" side). Note that there appear to be at least three or four very large impact craters on the satellite - very large in the sense that each of these craters is roughly comparable in size to the radius of Thebe".
Nota: crateri troppo grandi per un mondo cos piccolo...
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Thebe-PIA26751.jpgThebe from Juno120 visiteNASAs Juno spacecraft captured this view of Thebe, the second largest of Jupiters inner moons, during a close pass on May 1, 2026. The spacecrafts Stellar Reference Unit (SRU) captured this image from a distance of approximately 3,100 miles (5,000 kilometers) at a resolution of about 1.9 miles (3 kilometers) per pixel.
Thebe resides at the outer edge of Jupiters faint ring system and is believed to play a role in the formation of the planets gossamer ring through the shedding of dust.
While the SRUs primary function is to image star fields for navigation, its high sensitivity in low-light conditions makes it a powerful secondary science instrument. The SRU has previously been used to discover shallow lightning in Jupiters atmosphere and to image the planets ring system.MareKromium
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ZA-The Red Spot from HST.jpgMoments of the "Red Spot" - HST77 visitenessun commento
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ZC-Jupiter from Mars-PIA04532_modest.jpgJupiter and 3 Galilean Moons from Mars92 visiteCi siamo chiesti tante volte, guardando Giove dalla Terra, come lo si vedrebbe da Marte. Ebbene, abbiamo trovato la risposta (grazie all'aiuto del Mars Global Surveyor Orbiter): in questo frame davvero eccezionale, Giove e 3 dei suoi 4 Satelliti Galileiani, cos come li vedremmo da Marte! Un'immagine bellissima da guardare e su cui occorre riflettere molto. Perch? Perch conquistare lo Spazio, alle volte, vuol dire anche ampliare i confini dell'Immaginazione...
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