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Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. [2] [4] Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth i.e. over 250 astronomical units (AU).
Schematic diagram of the orbits of the fictional planets Vulcan, Counter-Earth, and Phaëton in relation to the five innermost planets of the Solar System.. Fictional planets of the Solar System have been depicted since the 1700s—often but not always corresponding to hypothetical planets that have at one point or another been seriously proposed by real-world astronomers, though commonly ...
The location of this mythical place may simply be a convention to show that a magically distant chthonic land of myth was intended in the remote past. [38] After Persephone had disappeared, Demeter searched for her all over the earth with Hecate's torches. In most versions, she forbids the earth to produce, or she neglects the earth and, in the ...
The sizes and masses of many of the moons of Jupiter and Saturn are fairly well known due to numerous observations and interactions of the Galileo and Cassini orbiters; however, many of the moons with a radius less than ~100 km, such as Jupiter's Himalia, have far less certain masses. [5]
The dwarf planet systems Pluto–Charon and Eris–Dysnomia are the only known examples of mutual tidal locking in the Solar System, [20] though it is likely that Orcus–Vanth is another. [ 21 ] The reddish-brown cap of the north pole of Charon is composed of tholins , organic macromolecules that may be essential ingredients of life .
Persephone is depicted as goddess of life in Sacrifice; In Elite: Dangerous, Persephone is the name given to the game's fictional depiction of the hypothetical Planet Nine in the Sol system, a world made largely of ice but with no atmosphere. In Skylanders, Persephone gives Skylanders upgrades in exchange for gold and is the most powerful fairy.
The sizes are listed in units of Jupiter radii (R J, 71 492 km).This list is designed to include all planets that are larger than 1.7 times the size of Jupiter.Some well-known planets that are smaller than 1.7 R J (19.055 R 🜨 or 121 536.4 km) have been included for the sake of comparison.
In Search of Planet Vulcan, the Ghost in Newton's Clockwork Machine. New York: Plenum Press. ISBN 978-0-306-45567-4. Levenson, Thomas (2015). The Hunt for Vulcan: How Albert Einstein Destroyed a Planet and Deciphered the Universe. London: Head of Zeus. ISBN 978-0812998986. Originally published as The Hunt for Vulcan: ...