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  2. Uranus - Wikipedia

    en.wikipedia.org/wiki/Uranus

    Uranus is the seventh planet from the Sun. It is a gaseous cyan -coloured ice giant. Most of the planet is made of water, ammonia, and methane in a supercritical phase of matter, which astronomy calls "ice" or volatiles. The planet's atmosphere has a complex layered cloud structure and has the lowest minimum temperature (49 K (−224 °C; − ...

  3. Neptune - Wikipedia

    en.wikipedia.org/wiki/Neptune

    Neptune is the eighth and farthest known planet from the Sun. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times the mass of Earth and slightly more massive, but denser and smaller, than fellow ice giant Uranus.

  4. Miranda (moon) - Wikipedia

    en.wikipedia.org/wiki/Miranda_(moon)

    Miranda, also designated Uranus V, is the smallest and innermost of Uranus's five round satellites. It was discovered by Gerard Kuiper on 16 February 1948 at McDonald Observatory in Texas, and named after Miranda from William Shakespeare's play The Tempest. [9] Like the other large moons of Uranus, Miranda orbits close to its planet's ...

  5. Scientists Thought They Knew What Uranus and Neptune ... - AOL

    www.aol.com/scientists-thought-knew-uranus...

    The ice giants Uranus and Neptune live up to their name. Although humans have only ever sent one spacecraft (Voyager 2) toward these far-flung worlds, scientists have a pretty good idea that these ...

  6. Exploration of Neptune - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_Neptune

    The new figure disproved the hypothesis that an undiscovered Planet X acted upon the orbits of Neptune and Uranus. [9] [10] Neptune's magnetic field was found to be highly tilted and largely offset from the planet's centre. The probe discovered auroras much weaker than those on Earth or other planets. The radio instruments on board found that ...

  7. Ice giant - Wikipedia

    en.wikipedia.org/wiki/Ice_giant

    Neptune photographed by Voyager 2 in August 1989. An ice giant is a giant planet composed mainly of elements heavier than hydrogen and helium, such as oxygen, carbon, nitrogen, and sulfur. There are two ice giants in the Solar System: Uranus and Neptune. In astrophysics and planetary science the term "ice" refers to volatile chemical compounds ...

  8. Lightning rod - Wikipedia

    en.wikipedia.org/wiki/Lightning_rod

    Lightning rods are also called finials, air terminals, or strike termination devices. In a lightning protection system, a lightning rod is a single component of the system. The lightning rod requires a connection to the earth to perform its protective function. Lightning rods come in many different forms, including hollow, solid, pointed ...

  9. Astronomical symbols - Wikipedia

    en.wikipedia.org/wiki/Astronomical_symbols

    a Rod of Asclepius. Cf. the modern astrological symbol U+2BDA , a caduceus (often confused with the Rod of Asclepius) [82] 11 Parthenope [16] [60] U+1CEC4 (dec 118468) 𜻄 a fish with a star. This is the original symbol from the brief period when this asteroid was known and astronomers were still using iconic symbols. [60] [88] U+1F77A (dec ...