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He repeated the balloon, canopy-reflection, and sundog theories but he refused to comment on them since, as he said, he was an astrophysicist and would care to comment only on the astrophysical aspects of the sightings. I drove back to Dayton convinced that the UFO wasn't Venus. Dr. Hynek had said Venus would have been a pinpoint of light.
Ambition as regards telescopic power is by no means yet satisfied. Nor ought it to be. The advance of astrophysical researches of all kinds depends largely upon light-grasp. For the spectroscopic examination of stars, for the measurement of their motions in the line of sight, for the discovery and study of nebulæ, for stellar and nebular photography, the cry continually is "more light."
Gustav Spörer, born at Berlin in 1822, began to observe sun-spots with the view of assigning the law of solar rotation in December, 1860. Appointed observer in the new Astrophysical establishment at Potsdam in 1874, he continued his sun-spot determinations there for twenty years, and died July 7, 1895.
Model by Ellerman of summit of Mount Wilson, showing the observatory buildings among the trees and bushes. The 60-foot tower on the extreme left, which is at the edge of a precipitous cañon 1,500 feet deep, is the vertical telescope of the Smithsonian Astrophysical Observatory.
After the completion of his new astrophysical observatory at Herény in the autumn of 1881, he repeatedly observed the spectra of both stars without perceiving a trace of bright lines; and was thus taken quite by surprise when he caught a twinkling of the crimson C in Gamma Cassiopeiæ, August 13, 1883. A few days later, the whole range including D3 was lustrous.
Indeed, a modern astrophysical observatory should be equipped like a great physical laboratory, provided on the one hand with telescopes and accessory apparatus of the greatest attainable power, and on the other with every device known to the investigator of radiation and the related physical and chemical phenomena.
What if he simply did not have the equipment necessary?" "You mean," she asked, "something like astrophysics?" "No. That's exactly what I don't mean. I'm perfectly well aware that it isn't possible to test astrophysical theories directly. Nobody has been able to build a star in the lab so far.
The studies of Indian ethnology, begun by Major J. W. Powell, grew into the Bureau of Ethnology. The Astrophysical Observatory was established, in which Professor Langley has continued his epoch-making work on the sun's radiant heat with his wonderful bolometer, an instrument of his own invention.
It fortunately happens that astrophysical research is now at the very apex of its development, founded as it is upon many centuries of astronomical investigation, rejuvenated by the introduction into the observatory of all the modern devices of the physicist, and strengthened with instruments of truly extraordinary range and power.
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