With 63 known natural satellites, Jupiter is the planet with the most moons. However, Jupiter may have other undetected moons. Jupiter's largest moon is Ganymede, which was named for the Greek cup bearer to the gods.
Ganymede, along with Io, Europa and Callisto, were the first four Jovian moons discovered by Galileo Galilei in 1610. Some other natural satellites of Jupiter are Thebe, Metis, Leda and Carme.
There are approximately 156 known natural satellites. Although Jupiter may have the most moons, Saturn, Uranus and Neptune also have many moons. Saturn has 47 known moons, while Uranus has 27 satellites. Earth has the least number of moons, with only one. Venus and Mercury do not have any moons.Learn More
Orbitally, Uranus is the closest planet to Neptune. Its orbit is 1.62 billion miles away from Neptune's orbit. However, until Pluto was downgraded from planetary status in 2006, Pluto's orbit was the closest to Neptune's at only 1.42 billion miles away.Full Answer >
Mercury is the planet with the shortest period of revolution of approximately 88 Earth days. However, Mercury’s period of rotation is about 59 Earth days.Full Answer >
While there is no way to determine a precise point at which the human species became distinct from their proto-simian ancestors, the earliest known human ancestor has been identified as Ardipithecus ramidus, or Ardi for short. Ardi, a female of her species, lived approximately 4.4 million years ago and was discovered in 1992 in the Afar Rift of Ethiopia by Gen Suwa.Full Answer >
Neptune has approximately six rings. However, the rings are generally very thin, dark and barely visible because they are composed of primarily dust and rock materials. The main outer ring of Neptune is called Adam.Full Answer >