arded as the boundary of the solar system.
It is hardly possible to over-estimate the significance of this splendid
discovery. The five planets had been known from all antiquity; they were
all, at suitable seasons, brilliantly conspicuous to the unaided eye.
But it was now found that, far outside the outermost of these planets
revolved another splendid planet, larger than Mercury or Mars,
larger--far larger--than Venus and the earth, and only surpassed in bulk
by Jupiter and by Saturn. This superb new planet was plunged into space
to such a depth that, notwithstanding its noble proportions, it seemed
merely a tiny star, being only on rare occasions within reach of the
unaided eye. This great globe required a period of eighty-four years to
complete its majestic path, and the diameter of that path was
3,600,000,000 miles.
Although the history of astronomy is the record of brilliant
discoveries--of the labours of Copernicus, and of Kepler--of the
telescopic achievements of Galileo, and the splendid theory of
Newton--of the refined discovery of the aberration of light--of many
other imperishable triumphs of intellect--yet this achievement of the
organist at the Octagon Chapel occupies a totally different position
from any other. There never before had been any historic record of the
discovery of one of the bodies of the particular system to which the
earth belongs. The older planets were no doubt discovered by someone,
but we can say little more about these discoveries than we can about the
discovery of the sun or of the moon; all are alike prehistoric. Here was
the first recorded instance of the discovery of a planet which, like the
earth, revolves around the sun, and, like our earth, may conceivably be
an inhabited globe. So unique an achievement instantly arrested the
attention of the whole scientific world. The music-master at Bath,
hitherto unheard of as an astronomer, was speedily placed in the very
foremost rank of those entitled to the name. On all sides the greatest
interest was manifested about the unknown philosopher. The name of
Herschel, then unfamiliar to English ears, appeared in every journal,
and a curious list has been preserved of the number of blunders which
were made in spelling the name. The different scientific societies
hastened to convey their congratulations on an occasion so memorable.
Tidings of the discovery made by the Hanoverian musician reached the
ears of George III., and he sent for He
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