Appletons' Popular Science Monthly, February 1899: Volume LIV, No. 4, February 1899Various
Science
Appletons' Popular Science Monthly, February 1899: Volume LIV, No. 4, February 1899
Various
Science -- Periodicals; Technology -- Periodicals
The evidence which enabled astronomers to definitely associate comets
with meteoric showers and falling stars leads one into a world of
romance. Schiaparelli, the distinguished Italian astronomer, made the
discovery that meteors had a cometic origin. He had been calculating
the orbit and motion of the meteorites which produce the August
showers, when it occurred to him that they corresponded with those of
a certain comet. By following up this clew it was discovered that the
orbit of Tempel's comet corresponded with that of the meteors of the
November star shower. The most remarkable evidence was that produced
by Biela's comet, discovered in 1826. It had a revolution about the
sun of six years and eight months. It was seen in 1772, 1805, 1832,
1845, and 1852. The vast mass, which appeared to be rushing around the
sun with remarkable velocity, became separated in 1846, dividing into
two parts, one hundred and fifty thousand or two hundred thousand
miles from each other. In six years the separation had increased to
about one and a half million miles. What mighty cataclysm in infinite
space caused this rupture the mind of man can not conceive, but
something occurred which rent the aërial giant asunder, and so far as
known completed its wreck, as from that time Biela's comet has not
been seen. In 1872 the comet was looked for, and astronomers predicted
that if it did not appear a shower of stars or meteors would be
visible--the remains of the lost traveler through space--and that they
would diverge from a point in Andromeda.
This remarkable prediction was verified in every particular. When the
moment for the appearance of the comet arrived, November 27, 1872,
there burst upon the heavens, not Biela's comet, but a marvelous
shower of shooting stars, which dashed down from the constellation of
Andromeda as predicted. In 1885 this was duplicated, and the
atmosphere was apparently filled with shooting stars. Biela's comet
had met disaster in infinite space, and the earth was being bombarded
with the wreckage.
It is difficult to comprehend the vastness of these clusters of
meteors which constitute the wreck of comets and the source of the
principal bombardments. Thus the August stream, which gives us the
brilliant displays of summer nights, is supposed to be ten million
miles in thickness, as the earth dashing through at a rate of two
million miles a day is several days in passing it. We cross the
November stream of meteors in a few hours, suggesting a width of forty
thousand or fifty thousand miles. This stream of metallic bodies is
hundreds of millions of miles in length, and contains myriads of
projectiles which may yet be hurled upon the earth or some of the
planets of the solar system.
[Illustration: THE NOVEMBER SHOWER OF METEORS AT SEA FROM SANDY
HOOK.]
Public-domain text, read in full here on John Shaqi.
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