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  2. Comet - Wikipedia

    en.wikipedia.org/wiki/Comet

    Comets whose aphelia are near a major planet's orbit are called its "family". [81] Such families are thought to arise from the planet capturing formerly long-period comets into shorter orbits. [82] At the shorter orbital period extreme, Encke's Comet has an orbit that does not reach the orbit of Jupiter, and is known as an Encke-type comet.

  3. Comet dust - Wikipedia

    en.wikipedia.org/wiki/Comet_dust

    Stardust's discovery of crystalline silicates in the dust of comet Wild 2 implies that the dust formed above glass temperature (> 1000 K) in the inner disk region around a hot young star, and was radially mixed in the solar nebula from the inner regions a larger distance from the star or the dust particle condensed in the outflow of evolved red ...

  4. Comet tail - Wikipedia

    en.wikipedia.org/wiki/Comet_tail

    While the solid nucleus of comets is generally less than 30 km across, the coma may be larger than the Sun, and ion tails have been observed to extend 3.8 astronomical units (570 Gm; 350 × 10 ^ 6 mi). [6] The Ulysses spacecraft made an unexpected pass through the tail of the comet C/2006 P1 (Comet McNaught), on February 3, 2007. [7]

  5. Observational history of comets - Wikipedia

    en.wikipedia.org/.../Observational_history_of_comets

    He theorized that the Earth was the center of the universe, which was surrounded by various other planets and stars. The universe or better known as the heavens filled the void above the terrestrial atmosphere with a fifth element called "Aether." Aristotle believed that comets were shooting stars that evolved into something much different.

  6. Cosmic dust - Wikipedia

    en.wikipedia.org/wiki/Cosmic_dust

    For example, cosmic dust can drive the mass loss when a star is nearing the end of its life, play a part in the early stages of star formation, and form planets. In the Solar System , dust plays a major role in the zodiacal light , Saturn 's B Ring spokes , the outer diffuse planetary rings at Jupiter , Saturn, Uranus and Neptune , and comets .

  7. Can you still see comet A3 in New Jersey? When, where ... - AOL

    www.aol.com/still-see-comet-a3-jersey-012546228.html

    Comet C/2023 A3 will be visible in the sky over the next few days for more than an hour shortly after sunset each night. For those in New Jersey, the sun sets around 6:25 p.m., so the best viewing ...

  8. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    The Oort cloud is thought to be composed of comets that were ejected from the inner Solar System by gravitational interactions with the outer planets. Oort cloud objects move very slowly, and can be perturbed by infrequent events, such as collisions, the gravitational effects of a passing star, or the galactic tide , the tidal force exerted by ...

  9. Comet nucleus - Wikipedia

    en.wikipedia.org/wiki/Comet_nucleus

    Comet orbits had been determined quite precisely, yet comets were at times recovered "off-schedule," by as much as days. Early comets could be explained by a "resisting medium"—such as "the aether", or the cumulative action of meteoroids against the front of the comet(s). [citation needed] But comets could return both early and late. Whipple ...