Halley's comet contains carbon (C),hydrogen (H),oxygen (O),and nitrogen (N)in ratios similar to that in the human body.

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Studies of Halley's comet have found that it contains organic molecules such as carbon dioxide, methane, and water, which are also present in the human body. While the exact ratios may not be identical, the presence of these elements in similar proportions suggests that comets may have played a role in the origin of life on Earth.

Halley's Comet Contains Carbon (C),hydrogen (H),oxygen (O),and Nitrogen (N)in Ratios