Wilbert Smith Archives Files Box 1130 16 1130-16-p064

Document Text (OCR)

402 Robey: An Hypothesis on the Slow Moving Green Firebal The word metcoroid was coined by Whipple to describe the dust ageregates which are sloughed from the surfaces of comet nuclei after a stratum of ice has evaporated, Most of the 200 million naked-eye meteors that the Barth receives each day are of this type.!* The word cometoid has been iniroduced here to account for cometary a physical state between meteoroids and comets, namely, chunks of ice too small to produce observable comets. A...