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- W2252923083 abstract "The flotilla of spacecraft which intercepted Comet Halley provided data that supported earlier models of its composition being that of proto-solar material. The nucleus is about 8 x 16 km in size and covered with a carbon soot which makes it darker than coal. Jets of material were depleting the nucleus of about 30 tons of mass per second when the spacecraft arrived, indicating a porous configuration for the 500 cu km object. A similarity is drawn between the comet's density and composition with that of a dirty snowdrift. The object may be both spinning and precessing at a rate which would account for measurements of brightness variations with periods of 2.2 and 7.4 days." @default.
- W2252923083 created "2016-06-24" @default.
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- W2252923083 date "1987-03-01" @default.
- W2252923083 modified "2023-09-26" @default.
- W2252923083 title "Black heart of Comet Halley" @default.
- W2252923083 hasPublicationYear "1987" @default.
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