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The prograde satellites consist of the Himalia group and three others in groups of one. The retrograde moons are grouped into the Carme, Ananke and Pasiphae groups. Saturn has 146 moons with known orbits; 66 of them have received permanent designations, and 63 have been named. Most of them are quite small. Seven moons are large enough to be in ...
April 25, 2010. ( 2010-04-25) –. present. How The Universe Works is a science documentary television series that provides scientific explanations about the inner workings of the universe and everything it encompasses. [ 1][ 2] With the use of computer-generated imagery (CGI) and visual effects, each episode presents and narrates a topic about ...
The Moon is Earth 's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have over time synchronized the Moon's orbital period ( lunar month) with its rotation period ( lunar day) at 29.5 Earth days, causing the same side of the Moon ...
Claimed moons of Earth. This asteroid's orbit keeps it near the Earth, but not orbiting it in the usual sense. When analyzing its orbit from the perspective of different bodies, the presumed quasi-satellite does seem to have a more stable location near the Earth. The orbit of 2020 CD 3 around the Earth. The gray band is the orbit of the Moon.
In lunar calendars, a lunar month is the time between two successive syzygies of the same type: new moons or full moons. The precise definition varies, especially for the beginning of the month. Animation of the Moon as it cycles through its phases, as seen from the Northern Hemisphere. The apparent wobbling of the Moon is known as libration.
The most bizarre moons that orbit other planets, the Solar System, and the strange secrets of the Earth's Moon. The episode consists entirely of segments broadcast previously in The Planets and Beyond episode "Alien Moons: the Next Earth" (Season 2 Episode 14) and The Planets episode "Jupiter: King of the Planets" (Season 1 Episode 1).
Some 4.5 billion years ago, when Earth was only 100 million years old or so, a Mars-sized protoplanet named Theia smashed into our planet, ejecting loads that eventually returned to the Earth’s ...
The full moon is the lunar phase when the Moon appears fully illuminated from Earth 's perspective. This occurs when Earth is located between the Sun and the Moon (when the ecliptic longitudes of the Sun and Moon differ by 180° ). [ 3] This means that the lunar hemisphere facing Earth—the near side —is completely sunlit and appears as an ...