Myths and Marvels of AstronomyProctor, Richard A. (Richard Anthony)
History
Myths and Marvels of Astronomy
Proctor, Richard A. (Richard Anthony)
Astronomy
So confidently did many believe in this satellite of Venus that
Frederick the Great, who for some reason imagined that he was entitled
to dispose as he pleased of the newly discovered body, proposed to
assign it away to the mathematician D'Alembert, who excused himself from
accepting the questionable honour in the following terms:--
'Your Majesty does me too much honour in wishing to baptize this new
planet with my name. I am neither great enough to become the satellite
of Venus in the heavens, nor well enough (_assez bien portant_) to be so
on the earth, and I am too well content with the small place I occupy in
this lower world to be ambitious of a place in the firmament.'
It is not at all easy to explain how this phantom satellite came to be
seen. Father Hell, of Vienna--the same astronomer whom Sir G. Airy
suspects of falling asleep during the progress of the transit of Venus
in 1769--made some experiments showing how a false image of the planet
might be seen beside the true one, the false image being smaller and
fainter, like the moons seen by Schort (as Hell called Short), Cassini,
and the rest. And more recently Sir David Brewster stated that Wargentin
'had in his possession a good achromatic telescope, which always showed
Venus with such a satellite.' But Hell admitted that the falsehood of
the unreal Venus was easily detected, and Brewster adds to his account
of Wargentin's phantom moon, that 'the deception was discovered by
turning the telescope about its axis.' As Admiral Smyth well remarks, to
endeavour to explain away in this manner the observations made by
Cassini and Short 'must be a mere pleasantry, for it is impossible such
accurate observers could have been deceived by so gross a neglect.'
Smyth, by the way, was a believer in the moon of Venus. 'The contested
satellite is perhaps extremely minute,' he says, 'while some parts of
its body may be less capable of reflecting light than others; and when
the splendour of its primary and our inconvenient station for watching
it are considered, it must be conceded that, however slight the hope may
be, search ought not to be relinquished.'
Setting aside Scheuten's asserted recognition of a dark body near Venus
during the transit of 1761, Venus has always appeared without any
attendant when in transit. As no one else claimed to have seen what
Scheuten saw in 1761, though the transit was observed by hundreds, of
whom many used far finer telescopes than he, we must consider that he
allowed his imagination to deceive him. During the transit of 1769, and
again on December 8-9, 1874, Venus certainly had no companion during her
transit.
Public-domain text, read in full here on John Shaqi.
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