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The arrows could hit animals or people and were feared when walking at night. Comets were conceived as smoking stars and as bad omens, e.g., announcing the death of a ruler. [9] Ancient Chinese records of comet apparitions have been particularly useful to modern astronomers. They are accurate, extensive, and consistent over three millennia.
Periodic comets sometimes bear the same name repeatedly (e.g. the nine Shoemaker–Levy comets or the twenty-four NEAT comets); the IAU system distinguishes between them either through the number prefix or by the full designation (e. g. 181P and 192P/Shoemaker–Levy are both "Comet Shoemaker–Levy"). In the literature, an informal numbering ...
Heinrich Kreutz was a German astronomer, [11] who claimed that the orbits of several sungrazing comets were related and likely produced when a large Sun-grazing comet fragmented hundreds of years previously. That group, known as the Kreutz Sungrazers, has produced some of the brightest comets ever observed, including X/1106 C1 and Comet Ikeya ...
This is a list of the most-watched Indian music videos on YouTube. Phonics Song with Two Words from children's channel ChuChu TV is the most viewed video in India and is the 7th most viewed YouTube video in the world. "Why This Kolaveri Di" become the first Indian music video to cross 100 million views. [1] [2] "Swag Se Swagat" became the first ...
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.
Calendars of the world have often been set by observations of the Sun and Moon (marking the day, month and year), and were important to agricultural societies, in which the harvest depended on planting at the correct time of year, and for which the nearly full moon was the only lighting for night-time travel into city markets.
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The Cross-staff, known as Yasti-yantra, was used by the time of Bhaskara II (1114–1185 CE). [39] This device could vary from a simple stick to V-shaped staffs designed specifically for determining angles with the help of a calibrated scale. [39] The clepsydra (Ghatī-yantra) was used in India for astronomical purposes until recent times. [39]