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Comets and comet composition

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Who discover dust cloud theory?

The dust cloud theory was first proposed by astronomers Fred Whipple and Jan Oort in the 1950s. They suggested that comets originate from a cloud of icy bodies located at the outer reaches of the solar system, now known as the Oort Cloud.


What organ does a whipple surgery work on?

Whipple surgery works on the pancreas and duodenum, and is an operation used to treat cancerous tumors. It's official name is a pancreaticoduodenectomy, but it is commonly known as the Whipple procedure after the American surgeon Allen Whipple who refined the technique in the 1930's.


What would have happened if the 1986 observations of Halley's comet had not supported Dr Whipple hypothesis?

Dr. Fred Whipple came up with the idea that comets are "dirty snowballs"; primarily ice and frozen gasses, holding a large quantity of dust, pebbles and rocks. If the evidence hadn't supported his theory, he would have had to go back and come up with a different theory. That's the way science works - or at least, is SUPPOSED to work.


What are Bus Hale-Bopp and Whipple in your solar system?

Bus Hale-Bopp is a group of icy bodies located beyond the orbit of Neptune in the Kuiper Belt. Whipple is a crater on the dwarf planet Pluto. Both are important features in our solar system, contributing to our understanding of the outer regions and celestial bodies within it.


St Lawrence lowlands has what provinces?

The St. Lawrence Lowlands region spans across the Canadian provinces of Quebec and Ontario.

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