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  2. Comet vintages - Wikipedia

    en.wikipedia.org/wiki/Comet_vintages

    Comet vintages are years during which an astronomical event, involving generally a "Great Comet", occurs prior to harvest. Throughout the history of wine , winemakers have attributed successful vintages and ideal weather conditions to the unexplained effects caused by the comets . [ 1 ]

  3. List of comets by type - Wikipedia

    en.wikipedia.org/wiki/List_of_comets_by_type

    This is a list of comets (bodies that travel in elliptical, parabolic, and sometimes hyperbolic orbits and display a tail behind them) listed by type. Comets are sorted into four categories: periodic comets (e.g. Halley's Comet), non-periodic comets (e.g. Comet Hale–Bopp), comets with no meaningful orbit (the Great Comet of 1106), and lost comets (), displayed as either P (periodic), C (non ...

  4. Observational history of comets - Wikipedia

    en.wikipedia.org/.../Observational_history_of_comets

    A great comet appeared in the sky above Europe on 1577 AD. Tycho Brahe decided to try and estimate the distance to this comet by measuring its parallax, the effect whereby the position or direction of an object appears to differ when viewed from different positions. He proposed that comets (like planets) return to their respective positions in ...

  5. 26P/Grigg–Skjellerup - Wikipedia

    en.wikipedia.org/wiki/26P/Grigg–Skjellerup

    Comet Grigg–Skjellerup (formally designated 26P/Grigg–Skjellerup) is a periodic comet. It was visited by the Giotto probe in July 1992. [ 6 ] The spacecraft came as close as 200 km, but could not take pictures because some instruments were damaged from its encounter with Halley's Comet . [ 7 ]

  6. List of periodic comets - Wikipedia

    en.wikipedia.org/wiki/List_of_periodic_comets

    In comet nomenclature, the letter before the "/" is either "C" (a non-periodic comet), "P" (a periodic comet), "D" (a comet that has been lost or has disintegrated), "X" (a comet for which no reliable orbit could be calculated —usually historical comets), "I" for an interstellar object, or "A" for an object that was either mistakenly ...

  7. Boeing lost $3.5 billion due to labor strikes and layoffs in ...

    www.aol.com/finance/boeing-sees-3-5b-cash...

    Boeing reported preliminary fourth quarter results on Thursday after the bell, estimating a whopping $3.5 billion operating cash flow loss to the quarter, citing the effects of a work stoppage ...