History of Astronomy |
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Page 83
Thus Saturn's distant satellite, Phoebe, and the sixth and seventh satellites of
Jupiter, have been followed regularly in their courses at Greenwich ever since
their discovery with the thirty-inch reflector (erected in 1897); and while doing so
Mr.
Thus Saturn's distant satellite, Phoebe, and the sixth and seventh satellites of
Jupiter, have been followed regularly in their courses at Greenwich ever since
their discovery with the thirty-inch reflector (erected in 1897); and while doing so
Mr.
Page 115
satellite varies much in brightness. W. Herschel found this variation to depend
upon its position in its orbit, and concluded that in the positions of feebleness it is
always presenting to us a portion of its surface, which does not well reflect the ...
satellite varies much in brightness. W. Herschel found this variation to depend
upon its position in its orbit, and concluded that in the positions of feebleness it is
always presenting to us a portion of its surface, which does not well reflect the ...
Page 118
The occasional disappearance of Cassini's Japetus was found on investigation to
be due to the same causes as that of Jupiter's fourth satellite, and proves that it
always turns the same face to the planet. Uranus and Neptune. — The splendid ...
The occasional disappearance of Cassini's Japetus was found on investigation to
be due to the same causes as that of Jupiter's fourth satellite, and proves that it
always turns the same face to the planet. Uranus and Neptune. — The splendid ...
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Contents
Ancient AstronomyChinese and Chaldeans | 7 |
Ancient Greek Astronomy | 13 |
The Reign of Epicycles From Ptolemy | 23 |
3 other sections not shown
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Common terms and phrases
accurate observations Airy ancient astro Astronomer Royal astronomical units attraction axis bright calculations Cape Cassini catalogue centre century Chinese comet compute Copernicus diameter discovered discovery earth eclipse Egyptian epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley Halley's comet heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Lick Observatory light line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor miles a second moon moon's nebula Newton nodes noticed Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil recognised records refractor retrograde retrograde motion revolve round ring rotation satellites seems seen showed Sirius solar system spectra spectroscope spectrum sphere spots stellar sun-spots supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith
Bibliographic information
| Title | History of Astronomy The history of science series |
| Author | George Forbes |
| Publisher | Watts, 1921 |
| Original from | Indiana University |
| Digitized | 5 Aug 2010 |
| Length | 150 pages |
| Export Citation | BiBTeX EndNote RefMan |