Saturn: the "Ringed Beauty" and His Moons

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Inizio > SOLAR SYSTEM > Saturn: the "Ringed Beauty" and His Moons

Piú votate - Saturn: the "Ringed Beauty" and His Moons

Rhea-PIA06525_modest.jpgRhea from about 1.700.000 Km54 visiteCaption NASA originale:"Saturn's moon Rhea shows off the moon equivalent of a black eye: a bright, rayed crater near its eastern limb.
Rhea is about half the size of Earth's moon. At 1.528 Km across, it is the second-largest moon orbiting Saturn.
The image was taken in visible light with the Cassini spacecraft narrow angle camera on Oct. 24, 2004, at a distance of about 1.7 MKMs from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 40°. The image scale is approximately 10 Km per pixel. Cassini will image this hemisphere of Rhea again in mid-January 2005 with an approx. 1 Km resolution".

(25 voti)

Japetus-PIA06521_modest.jpgThe "dark side" of Japetus63 visiteCaption NASA originale: "This image shows the dark, leading hemisphere of the mysterious moon Iapetus. The dark area is the Cassini region, named for Giovanni Cassini, who discovered the moon in 1672. The diameter of Iapetus is of approx. 1,436 Km (892 miles).
Cassini noted that he was able to see the moon on one side of its orbit around Saturn, but not on the other side. From this, he correctly deduced that one hemisphere must be dark while the other is much brighter".

(25 voti)

Saturn-W00003105.jpgSaturn and his shadow (3)56 visite...tutte le nuove immagini che, per un motivo o per l'altro, potevano prestarsi a far sorgere nuove domande, nuovi dubbi, nuovi interrogativi - più o meno scabrosi - e che, comunque, potevano "imbarazzare" la National Aeronautics and Space Administration. Detto in un altro modo, stiamo parlando di "CENSURA". Però, come ben sapete, la NASA non gestisce questa Missione da sola: c'è di mezzo anche l'European Space Agency e l'Agenzia Spaziale Italiana. Leggete:
"The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo".

(25 voti)

Atlas, Pandora and Janus-PIA06522_modest.jpgSaturn's Rings + Atlas, Pandora, Prometheus and Janus77 visiteCaption NASA originale: "Saturn hosts its own miniature solar system with an entourage of more than 30 moons. This image shows Saturn's "A" and "F" Rings, along with three of the moons that orbit close to them. From innermost to outermost, tiny Atlas (32 Km across) orbits just outside of the bright "A-Ring" and is seen above center in this view. Prometheus (102 Km across) is visible near lower right. Prometheus and its smaller cohort, Pandora, shepherd the thin, knotted F-Ring. Janus (181 Km across) can be seen near lower left. Janus shares its orbit with the moon Epimetheus. Density waves due to Janus cause some of the bright bands seen in the A-Ring in this image. Prometheus and Atlas also produce waves in the rings, but their wave regions are too narrow to be seen here. The planet's shadow stretches all the way across the main rings in this view. The shadow has an oval shape now but over the next few years it will become more rectangular as the planet orbits the Sun and the angle Sunlight-Rings decreases.

(20 voti)