Daily Archives: July 11, 2020
Re: Not A Bird
Re: not a Bird, not a Plane, not Superman…..
The 1910 approach [of Halley’s], which came into naked-eye view around 10 April[63] and came to perihelion on 20 April,[63] was notable for several reasons: it was the first approach [ of Halley ] for which photographs exist, and the first for which spectroscopic data were obtained.[16] Furthermore, the comet made a relatively close approach of 0.15 AU,[63] making it a spectacular sight. On 19 May, Earth actually passed through the tail of the comet.[95][96] One of the substances discovered in the tail by spectroscopic analysis was the toxic gas cyanogen,[97] which led astronomer Camille Flammarion to claim that, when Earth passed through the tail, the gas “would impregnate the atmosphere and possibly snuff out all life on the planet.”[98] His pronouncement led to panicked buying of gas masks and quack “anti-comet pills” and “anti-comet umbrellas” by the public.[99] In reality, as other astronomers were quick to point out, the gas is so diffused that the world suffered no ill effects from the passage through the tail.[98]
More of that history… this 1910 approach of the comet added to the unrest in China on the eve of the Xinhai Revolution that would end the last dynasty in 1911.
Not A Bird
Right now, it’s visible with the naked eye in early AM hrs about 8° above the NE horizon (fist on outstretched arm is 5°). My wife & I have been watching the past few mornings from our front pasture. This AM, went out at 4 & it was readily visible & the tail was amazing thru binocs. It will move higher in the sky & to the NW & arise earlier, so that toward end of July, will be visible soon after dark.
It has a good chance to become a super comet (readily visible with unaided eye), last being Hale-Bopp (still have purchased-photo of H-B over Grand Teton in my office). And, I would say, it’s quite close now. If you miss it, your next chance to view this comet will be in just another 6800 yrs. I decided I better check it out now!
Brian Carrigan
Blackfoot