Iapetus Moon Profile Diameter: 1,471.2 km Mass: 1.81 × 10^21 kg (2.5% Moon) Orbits: Saturn Orbit Distance: 3,560,851 km Orbit Length: 79.3 days Surface Temperature: -143 to -183 °C Discovery Date: October 25, 1671 Discovered By: G.D. Cassini...
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But the icy moon challenged the Italian astronomer. He first spotted it on the west side of the planet, but when he attempted to observe it 39 days later on the eastern side, no trace of the satellite could be found. The pattern repeated itself over the course of the moon's 79-day ...
Planetary rings can also form when a great quantity of small particles and objects are generated near a planet from collisions, such as between a comet or an asteroid and the planet, between a moon and another object, or during the original process of planet formation. Scientists also think ...
Infall of this material causes a slight darkening and reddening of the leading hemisphere of Iapetus (similar to what is seen on the Uranian moons Oberon and Titania) but does not directly create the dramatic two-tone coloration of that moon. 這種物質的侵入會導致土衛八領先半球的顏色輕微變和...
Christopher Mims
Asub-satellite of the Saturnianmoonwouldexplaintwoof themostpuzzlingfeaturesofIapetus. 土星卫星的子卫星将解释Iapetus的两个最使人迷惑的特征。 article.yeeyan.org 10. Possiblysolvinga300-year-oldmystery,tworecentstudiessuggest alikelymechanismbehindIapetus'two-facednature. ...
Define Iapetus. Iapetus synonyms, Iapetus pronunciation, Iapetus translation, English dictionary definition of Iapetus. n. 1. Greek Mythology A Titan who was the father of Prometheus and Atlas and an ancestor of the human race. 2. A satellite of Saturn.
: "Luna [Selene, Moon] herself has ordained various days in various grades as lucky for work. Shun the fifth . . . then in monstrous labour Terra [Gaia, Earth] bore Coeus, and Iapetus and fierce Typhoeus, and the brethren [Gigantes (Giants)] who were banded to break down Heaven."...