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2. Planetary mnemonic - Wikipedia

   en.wikipedia.org/wiki/Planetary_mnemonic

   A representation of the above method with the left hand representing the terrestrial planets and the right hand, with palm turned upward, is representing the giant planets along with TNOs A planetary mnemonic refers to a phrase created to remember the planets and dwarf planets of the Solar System , with the order of words corresponding to ...

3. Lists of planets - Wikipedia

   en.wikipedia.org/wiki/Lists_of_planets

   There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. Artist's concept of the potentially habitable exoplanet Kepler-186f As of 14 January 2025, there are 5,819 confirmed exoplanets in 4,346 planetary systems , with 974 systems having more than one planet . [ 1 ]

4. List of astronomical objects named after people - Wikipedia

   en.wikipedia.org/wiki/List_of_astronomical...

   Holmberg II is a dwarf irregular galaxy about 9.8 million light-years away in the M81 Group; Holmberg IX is a dwarf irregular galaxy and a satellite galaxy of Messier 81. Holmberg 15A is a supergiant elliptical galaxy and the central dominant galaxy of the Abell 85 galaxy cluster in the constellation Cetus. Huchra's Lens is a lensed galaxy.

5. List of multiplanetary systems - Wikipedia

   en.wikipedia.org/wiki/List_of_multiplanetary_systems

   All eight exoplanets are larger than Earth and are within 1.1 AU of the parent star. Only star apart from the Sun with at least eight planets. [142] A Hill stability test shows that the system is stable. [143] Planet h orbits in the habitable zone. Kepler-150: Lyra: 19 h 12 m 56.2 s +40° 31′ 15″ 2906: G?V: 0.97: 5560: unknown: 5: Planet f ...

6. Solar System - Wikipedia

   en.wikipedia.org/wiki/Solar_System

   The Solar System [d] is the gravitationally bound system of the Sun and the objects that orbit it. [11] It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.

7. Planet - Wikipedia

   en.wikipedia.org/wiki/Planet

   The eight planets of the Solar System with size to scale (up to down, left to right): Saturn, Jupiter, Uranus, Neptune (outer planets), Earth, Venus, Mars, and Mercury (inner planets) A planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. [1]