Fourteen Weeks in Descriptive Astronomy |
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Page 70
... comet would Fig . 16 . JUPITER SATURN MERCURY VENUS EARTH NEPTUNE URANUS be at 880 feet ; the aphelion distance of Donati's comet of 1858 at 6 miles ; and the nearest fixed star at 7,500 miles . According to this scale , the daily ...
... comet would Fig . 16 . JUPITER SATURN MERCURY VENUS EARTH NEPTUNE URANUS be at 880 feet ; the aphelion distance of Donati's comet of 1858 at 6 miles ; and the nearest fixed star at 7,500 miles . According to this scale , the daily ...
Page 194
... comets , and for measuring the annual parallax of the stars , since they have an orbit of 5,500 million miles in diameter , and hence the angle must be 30 times as great as that which the terrestrial orbit affords . TELESCOPIC FEATURES ...
... comets , and for measuring the annual parallax of the stars , since they have an orbit of 5,500 million miles in diameter , and hence the angle must be 30 times as great as that which the terrestrial orbit affords . TELESCOPIC FEATURES ...
Page 195
... masses which fall to the earth . ( 2 ) Shooting Stars are those evanescent brilliant points that sud- denly dart through the higher regions of the air ,. A METEOR WITH ITS TRAIN . COMET WITHOUT A NUCLEUS . METEORS AND SHOOTING STARS . 195.
... masses which fall to the earth . ( 2 ) Shooting Stars are those evanescent brilliant points that sud- denly dart through the higher regions of the air ,. A METEOR WITH ITS TRAIN . COMET WITHOUT A NUCLEUS . METEORS AND SHOOTING STARS . 195.
Page 205
... COMETS . - The orbit of the November shower is found to be almost identical with that of the comet of 1866 ; while the August stream is in the track of the comet of 1862 . It is a popular theory that these comets are only clusters of ...
... COMETS . - The orbit of the November shower is found to be almost identical with that of the comet of 1866 ; while the August stream is in the track of the comet of 1862 . It is a popular theory that these comets are only clusters of ...
Page 206
... COMETS . We come now to notice a class of bodies the most fascinating , perhaps , of any in astronomy . The ... comet of 43 B. C. , which appeared just after the assassination of Julius Cæsar , was looked upon by the Romans as a ...
... COMETS . We come now to notice a class of bodies the most fascinating , perhaps , of any in astronomy . The ... comet of 43 B. C. , which appeared just after the assassination of Julius Cæsar , was looked upon by the Romans as a ...
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac