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Home > All Images > 1997 > November > 17 Nov 1997

Images Dated 17th November 1997

Choose from 19 pictures in our Images Dated 17th November 1997 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Artwork of comets passing the Earth Featured 17 Nov 1997 Image

Artwork of comets passing the Earth

Nemesis comets. Artwork of comets passing close to the Earth. The Nemesis star, which caused them, is seen in a dark lane of the Milky Way at upper right. Nemesis is a hypothetical companion star of the Sun. It is claimed to be a low-mass, dim red or brown dwarf star which has an eccentric orbit. It is claimed Nemesis perturbs the orbits of lumps of ice in the Oort Cloud at the edge of our solar system. These perturbed comets enter the inner solar system and become comets. The comets tails are formed from gas and dust which has evaporated from their surface due to the Sun's heat. Impacts from Nemesis comets could be the cause of the periodic mass extinctions in Earth's history