What is planet Killer?

The "planet killer" was an informal name given by Spock in 2267, based on a description given by Commodore Matt Decker, to an automated, self-propelled doomsday machine capable of destroying entire planets. This robot was encountered by two Federation starships: the USS Constellation and the USS Enterprise.

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Is there a comet coming in 2022?

Bottom line: A new comet named C/2021 O3 (PanSTARRS) will visit the sun and be closest to Earth in the spring of 2022. It might become visible to the unaided eye. Is comet Dutta real? Yes, comet Dutta is for real. It was discovered by Manoj Dutta and was named after his name. Comet Dutta comes near the Earth on December 15. On December 15, Comet Dutta came closest to the Earth at a distance of 80,000 km.

Why was Duttada's wife unhappy about the discovery?

Answer: Duttada's wife, Indrani Debi was unhappy about the discovery because she thought that comets bring ill-luck or cause unnatural calamities to Earth. More along, she was concerned that a good man like Duttada should not have been associated with the discovery of a comet. Accordingly, what was duttada's explanation to his wife's supposed superstition? The discovery of the new comet made Duttada's wife unhappy. She was superstitious. She thought that the discovery would bring calamities on the family as well as on the earth.

Subsequently, what is special about comets?

Comets orbit the Sun in elliptical paths ? just like the planets. The path of a comet though is far more elliptical than that of any planet. A comet has four components: a nucleus, a coma, a dust tail and an ion tail. The nucleus of a comet contains the vast majority of its total mass. How do comets glow? A comet's tail is made from the volatile materials inside the comet vaporising, which carries dust and gas out with them. This detritus reflects sunlight, leaving it glowing.

Moreover, how big is a comet?

Comets are very small in size relative to planets. Their average diameters usually range from 750 meters (2,460 feet) or less to about 20 kilometers (12 miles).