What is unique about Saturn’s moons Janus and Epimetheus?

What is unique about Saturn’s moons Janus and Epimetheus?

Epimetheus and Janus are the fifth and sixth moons in distance from Saturn. Both are phase locked with their parent; one side always faces toward Saturn. Being so close, they orbit in less than 17 hours.

What is the name of the moon in Prometheus?

Discovery
Mean radius	43.1±2.7 km
Volume	≈ 340000 km3
Mass	(1.595±0.015)×1017 kg
Mean density	0.48±0.09 g/cm3

Discovery
Mean radius	43.1±2.7 km
Volume	≈ 340000 km3
Mass	(1.595±0.015)×1017 kg
Mean density	0.48±0.09 g/cm3

Is Prometheus a moon?

Overview. Prometheus acts as a shepherding moon, constraining the extent of the inner edge of Saturn’s F Ring. Prometheus is extremely irregular and has visible craters — some up to 12.4 miles (20 kilometers) in diameter. However, it is much less cratered than its nearby neighbors Pandora, Janus and Epimetheus.

What is the name of the last moon of Saturn which was discovered in 1966?

Enceladus. Enceladus is Saturn’s sixth largest moon, but it’s one of the most scientifically compelling bodies in our solar system. Audouin Dollfus observed a moon on Dec. 15, 1966, for which he proposed the name “Janus.” On Dec.

What happens to Saturn’s moons Epimetheus and Janus every four years?

Changing orbits of Janus and Epimetheus The two moons occupy very nearly the same orbit and swap orbital positions from Saturn once every four years. Because Janus is larger than Epimetheus, the exchange of orbital momentum changes Janus’ distance from Saturn less than it changes Epimetheus’.

Which 2 moons could support life?

The strongest candidates for natural satellite habitability are currently icy satellites such as those of Jupiter and Saturn—Europa and Enceladus respectively, although if life exists in either place, it would probably be confined to subsurface habitats.

What is Pandora’s moon called?

Discovery
Albedo	0.6
Temperature	≈ 78 K

Discovery
Albedo	0.6
Temperature	≈ 78 K

How did the girl get pregnant in Prometheus?

That’s the unfortunate fate that befalls Noomi Rapace’s Elizabeth Shaw in Prometheus, Ridley Scott’s Alien-inspired 2012 film. Shaw is supposedly sterile, but she becomes pregnant by her mutating archaeologist partner, Charlie Holloway.

What is the moons god name?

Selene, (Greek: “Moon”) Latin Luna, in Greek and Roman religion, the personification of the moon as a goddess. She was worshipped at the new and full moons.

Who is Prometheus wife?

In Greek mythology, Hesione (/hɪˈsaɪ. əniː/; Ancient Greek: Ἡσιόνη) was the daughter of Titan Oceanus probably by his sister-wife Tethys, and thus counted among the Oceanids. She was the wife of her cousin Prometheus and the mother of Deucalion.

Who eats Prometheus?

For his crimes, Prometheus was punished by Zeus, who bound him with chains and sent an eagle to eat Prometheus’ immortal liver every day, which then grew back every night. Years later, the Greek hero Heracles, with Zeus’ permission, killed the eagle and freed Prometheus from this torment (521–529).

Is Prometheus a girl or a boy?

Prometheus is a masculine name of Greek origin. Perhaps ironically, this name means “forethought.” The story of Prometheus in Greek mythology is one mortals have told for centuries. This Titan god of fire believed in allowing mere mortals to evolve, and he gave them fire against the gods’ wishes.

What is the oldest moon in the universe?

Discovery
Semi-major axis	1 882 700 km
Eccentricity	0.0074
Orbital period (sidereal)	16.6890184 d
Average orbital speed	8.204 km/s

Discovery
Semi-major axis	1 882 700 km
Eccentricity	0.0074
Orbital period (sidereal)	16.6890184 d
Average orbital speed	8.204 km/s

Who discovered the 4 famous moons of Saturn?

Christiaan Huygens discovered the first known moon of Saturn. The year was 1655 and the moon is Titan. Jean-Dominique Cassini made the next four discoveries: Iapetus (1671), Rhea (1672), Dione (1684), and Tethys (1684). Mimas and Enceladus were both discovered by William Herschel in 1789.

Which planet has 13 known moons?

Neptune has 13 known moons, though most are small and orbit closer to Neptune than its rings. Triton is Neptune’s only large moon with a diameter of 2,704 km, and Proteus and Nereid are Neptune’s second and third largest moons, respectively.

What is Epimetheus weakness?

Perhaps if he had overcome his weakness of lack of foresight, Epimetheus would not have failed, but neither would he have thrived. Given more of a chance to work with animals and exercise other strengths, perhaps history and mythology would be kinder to him.

Why do Saturn’s rings disappear every 14 years?

The same thing that’s happening now: we’re experiencing a “ring plane crossing.” As Saturn goes around the sun, it periodically turns its rings edge-on to Earth—once every 14-to-15 years. Because the rings are so thin, they can actually disappear when viewed through a small telescope.

What happens to a planet with 2 moons?

If the gravitational influence of a second moon were extreme, it could lead to phenomenally huge ocean tides (up to a kilometre high) which would also result in frequent tsunamis. It could also lead to enhanced volcanic activity and earthquakes.

Is there anything special about Saturn’s moons?

The largest of Saturn’s moons and the first to be discovered is Titan. It is the only moon in the solar system known to have a substantial atmosphere. Nitrogen and methane extend around the moon 10 times as far into space as Earth’s atmosphere, sometimes falling to Titan’s surface as methane rain.

What are 2 of Saturn’s unique features?

Adorned with thousands of beautiful ringlets, Saturn is unique among the planets. It is not the only planet to have rings – made of chunks of ice and rock – but none are as spectacular or as complicated as Saturn’s. Like fellow gas giant Jupiter, Saturn is a massive ball made mostly of hydrogen and helium.

What is the most unique thing about Saturn?

Other planets have rings. Saturn’s rings are the only ones that can be seen from Earth.

What is unique about Saturn’s rings?

Rings. Saturn’s rings are thought to be pieces of comets, asteroids, or shattered moons that broke up before they reached the planet, torn apart by Saturn’s powerful gravity. They are made of billions of small chunks of ice and rock coated with other materials such as dust.