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Thebe Medupe is a South African entrepreneur and business strategist known for his work in the fields of technology and innovation. He is the founder of various companies and initiatives aimed at promoting economic development and empowerment in African communities. Medupe is also recognized for his contributions to discussions on entrepreneurship and leadership within the continent. His efforts often focus on leveraging technology to drive sustainable growth and create opportunities for young people.

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6d ago

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When was the ring on Jupiter discovered?

Jupiter's ring system was discovered in 1979 by the Voyager 1 spacecraft during its flyby of the planet. The rings were found to be faint and composed mainly of small particles, with the main ring located close to the planet and two additional components known as the Amalthea and Thebe rings. Further observations by subsequent missions, such as Galileo and New Horizons, have expanded our understanding of these rings.


What are the moons orbiting Jupiter from biggest to smallest?

Of the 67 moons orbiting Jupiter, the 4 largest, smallest to largest, are Europa, Io, Callisto, Ganymede. The 4 in closest orbit to Jupiter are Metis, Adrastea, Amalthea, and Thebe. These are referred to as the Amalthean moons.The 4 largest Jovian moons (Jupiter is "Jove" in Greek) are some of the largest bodies in the Solar system, after the Sun and planets. Genymede is larger than the planet Mercury.These 4 large Jovian moons would be planetesimals if they orbited the Sun. The moons smaller than these 4 are quite a bit smaller . . . many of which just have "J" (for Jupiter) numbers instead of names.


Does Saturn have any rings?

Yes, Saturn is famous for its prominent ring system made up of ice, rock, and dust particles ranging in size from tiny grains to several meters in diameter. These rings are composed of numerous smaller individual ringlets that are thought to be the remnants of a moon or comet disrupted by Saturn's gravity.


What planets have moons and identify the moons of these planets?

Mercury:0 Venus:0 Earth:1-Luna Mars:2-Phobos, Deimos Jupiter:63-Io, Europa, Ganymede, Callisto (Galilean moons); Amalthea, Himalia, Elara, Pasiphae, Sinope, Lysithea, Carme, Ananke, Leda; Metis, Adrastea (shepherd moons); Thebe, Callirrhoe, Themisto, Kalyke, Iocaste, Erinome, Harpalyke, Isonoe, Praxidike, Megaclite, Taygete, Chaldene, Autonoe, Thyone, Hermippe, Eurydome, Sponde, Pasithee, Euanthe, Kale, Orthosie, Euporie, Aitne (+ 25 other moons) Saturn:61-Titan, Rhea, Iapetus, Dione, Tethys, Enceladus, Mimas, Hyperion; Prometheus, Pandora (shepherd moons); Phoebe, Janus, Epimetheus, Helene, Telesto, Calypso, Atlas, Pan, Ymir, Paaliaq, Siarnaq, Tarvos, Kiviuq, Ijiraq, Thrymr, Skathi, Mundilfari, Erriapo, Albiorox, Suttung (+ 30 other moons) Uranus:27-Cordelia, Ophelia, (shepherd moons); Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Belinda, Puck, Miranda, Ariel, Umbriel, Titania, Oberon, Caliban, Sycorax, Prospero, Setebos, Stephano, Trinculo (+ 6 unnamed moons) Neptune:13-Triton, Nereid, Naiad, Thalassa, Despina, Larissa, Proteus, Galatea (shepherd moon) (+ 5 unnamed moons) Pluto:3-Charon, Hydra, Nix


How many rings does each planet have and what is their composition?

Not every planet has rings! Officially, Jupiter has three (the Main, Halo and Gossamer rings,) plus a thin band of dust extending down to the cloud tops. Saturn has rings A, B, C, D, E, F and G, Uranus has 13 rings, named after Greek letters, and Neptune has five - four named after its discoverers, and one named the Plateau ring. Saturn's moon Rhea also seems to have a ring. It's important to realise that, for example, Saturn's rings are made up of thousands of tiny ringlets, so it's difficult to say where one "ring" begins and another ends.