Across the Zodiac: The Story of a Wrecked RecordGreg, Percy
Science
Across the Zodiac: The Story of a Wrecked Record
Greg, Percy
Science fiction
I mean that, apart from the polar compression, the shape seemed as if
the spheroid were irregularly squeezed; so that though not broken by
projection or indentation, the limb did not present the regular
quasi-circular curvature exhibited in the focus of our telescopes.
Also, between the inner ring and the planet, with a power of 500, I
discerned what appeared to be a dark purplish ring, semi-transparent,
so that through it the bright surface of Saturn might be discerned as
through a veil. Mercury shone brightly several degrees outside the
halo surrounding the Earth's black disc; and Venus was also visible;
but in neither case did my observations allow me to ascertain anything
that has not been already noted by astronomers. The dim form of Uranus
was better defined than I had previously seen it, but no marking of
any kind was perceptible.
Rising from my second, or, so to speak, midday rest, and having
busied myself for some little time with what I may call my household
and garden duties, I observed the discometer at 1h. (or 5 P.M.). It
indicated about two hundred terrestrial radii of elevation. I had,
of course, from the first been falling slightly behind the Earth in
her orbital motion, and was no longer exactly in opposition; that is
to say, a line drawn from the Astronaut to the Earth's centre was no
longer a prolongation of that joining the centres of the Earth and
Sun. The effect of this divergence was now perceptible. The earthly
corona was unequal in width, and to the westward was very distinctly
brightened, while on the other side it was narrow and comparatively
faint. While watching this phenomenon through the lower lens, I
thought that I could perceive behind or through the widest portion
of the halo a white light, which at first I mistook for one of those
scintillations that had of late become scarcely discernible. But after
a time it extended visibly beyond the boundary of the halo itself, and
I perceived that the edge of the Sun's disc had come at last into view.
It was but a minute and narrow crescent, but was well worth watching.
The brightening and broadening of the halo at this point I perceived to
be due, not to the Sun's effect upon the atmosphere that produced it,
but chiefly to the twilight now brightening on that limb of the Earth's
disc; or rather to the fact that a small portion of that part of the
Earth's surface, where, if the Sun were not visible, he was but a very
little below the horizon, had been turned towards me. I saw through
the telescope first a tiny solar crescent of intense brightness, then
the halo proper, now exceedingly narrow, and then what looked like
a silver terrestrial crescent, but a mere thread, finer and shorter
than any that the Moon ever displays even to telescopic observers on
Earth; since, when such a minute portion of her illuminated surface
is turned towards the Earth, it is utterly extinguished to our eyes
by the immediate vicinity of the Sun, as was soon the case with the
Public-domain text, read in full here on John Shaqi.
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