Topics similar to or like Planet

Astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and – according to the International Astronomical Union but not all planetary scientists – has cleared its neighbouring region of planetesimals. Wikipedia

  • Planetary mass

    Measure of the mass of a planet-like object. Solar mass, the mass of the Sun. Wikipedia

  • Star

    Astronomical object consisting of a luminous spheroid of plasma held together by its own gravity. Sun. Wikipedia

  • History of astronomy

    Oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of prehistory: vestiges of these are still found in astrology, a discipline long interwoven with public and governmental astronomy. Not completely separated in Europe during the Copernican Revolution starting in 1543. Wikipedia

  • Planetary habitability

    Measure of a planet's or a natural satellite's potential to develop and maintain environments hospitable to life. Life may be generated directly on a planet or satellite endogenously or be transferred to it from another body, through a hypothetical process known as panspermia. Wikipedia

  • Clearing the neighbourhood

    "Clearing the neighbourhood" around a celestial body's orbit describes the body becoming gravitationally dominant that there are no other bodies of comparable size other than its natural satellites or those otherwise under its gravitational influence. One of three necessary criteria for a celestial body to be considered a planet in the Solar System, according to the definition adopted in 2006 by the International Astronomical Union . Wikipedia

  • Planetary system

    Set of gravitationally bound non-stellar objects in or out of orbit around a star or star system. Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals and circumstellar disks. Wikipedia


    Sentences forPlanet

    • Planetary coordinate systems are defined relative to their mean axis of rotation and various definitions of longitude depending on the body.Longitude-Wikipedia
    • He hypothesized that these meteorites were chunks of material that had either never been consolidated in the formation of larger masses or were debris from the formation and destruction of planets.Ernst Chladni-Wikipedia
    • Ceres was assigned a planetary symbol, and remained listed as a planet in astronomy books and tables (along with 2 Pallas, 3 Juno, and 4 Vesta) for half a century.Ceres (dwarf planet)-Wikipedia
    • The effects of the rotation rate of a planet about its axis can be seen in atmospheric streams and currents.Planetary science-Wikipedia
    • These small accretions grow from pebbles to rocks to early baby planets, called planetesimals, then protoplanets, and eventually, full planets.Ablation-Wikipedia
    • The Federation is an organization of numerous planetary sovereignties, and although viewers are never told about the internal workings of the government, many episodes refer to the rules and laws that the Federation imposes on the characters and their adventures.United Federation of Planets-Wikipedia

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