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  2. Neptune - Wikipedia

    en.wikipedia.org/wiki/Neptune

    The long orbital period of Neptune means that the seasons last for forty Earth years. [109] Its sidereal rotation period (day) is roughly 16.11 hours. [12] Because its axial tilt is comparable to Earth's, the variation in the length of its day over the course of its long year is not any more extreme.

  3. Discovery of Neptune - Wikipedia

    en.wikipedia.org/wiki/Discovery_of_Neptune

    It did not take long before d'Arrest exclaimed: "That star is not on the map!". [28] ... "Neptune's Discovery 150 Years Later". Astronomy. 24 (9): 42 ...

  4. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...

  5. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    The latter have orbits whose periods are in a simple ratio to that of Neptune: for example, going around the Sun twice for every three times that Neptune does, or once for every two. The classical belt consists of objects having no resonance with Neptune, and extends from roughly 39.4 to 47.7 AU. [201]

  6. Formation and evolution of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Formation_and_evolution_of...

    The Solar System is chaotic over million- and billion-year timescales, [102] with the orbits of the planets open to long-term variations. One notable example of this chaos is the Neptune–Pluto system, which lies in a 3:2 orbital resonance .

  7. How to spot February’s parade of 7 planets, according to ...

    www.aol.com/news/spot-february-parade-7-planets...

    This long-exposure photo shows Saturn, Venus, Neptune, Uranus, Jupiter and Mars aligning on the same line over the Ispatan plateau in the Iskenderun district of Hatay, Turkey, on January 25.

  8. Melania Trump 'Leads Her Own Life' 1 Month into Husband's ...

    www.aol.com/melania-trump-leads-her-own...

    Melania attended the Governors Ball over the weekend after nearly a month-long break from making any public appearances. She had last been seen with Donald visiting disaster-stricken areas in ...

  9. Age of the universe - Wikipedia

    en.wikipedia.org/wiki/Age_of_the_universe

    In physical cosmology, the age of the universe is the time elapsed since the Big Bang: 13.8 billion years. [1] Astronomers have two different approaches to determine the age of the universe . One is based on a particle physics model of the early universe called Lambda-CDM , matched to measurements of the distant, and thus old features, like the ...