The Universe; from Flat Earth to Quasar |
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Page 98
... force of Solar gravitation by circling the Sun in elliptical orbits . ( Actually , the Sun also moves in response to the gravitational pull of the planets . The center of gravity of the Solar system about which the Sun and planets move ...
... force of Solar gravitation by circling the Sun in elliptical orbits . ( Actually , the Sun also moves in response to the gravitational pull of the planets . The center of gravity of the Solar system about which the Sun and planets move ...
Page 127
... gravitational pull . If the atoms or molecules move quickly enough , they leave the vicinity of a planet despite its gravitational pull . The smaller the planet and the weaker its gravity , the more easily do atoms and molecules drift ...
... gravitational pull . If the atoms or molecules move quickly enough , they leave the vicinity of a planet despite its gravitational pull . The smaller the planet and the weaker its gravity , the more easily do atoms and molecules drift ...
Page 194
... forces are of two kinds . There are electromagnetic fields and gravitational fields . The electromagnetic field gives rise to forces of two kinds , an attractive one and a repulsive one , and the two effects usually balance on a large ...
... forces are of two kinds . There are electromagnetic fields and gravitational fields . The electromagnetic field gives rise to forces of two kinds , an attractive one and a repulsive one , and the two effects usually balance on a large ...
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American astronomer Andromeda galaxy Andromeda Nebula angular momentum antimatter astronomer big bang bright century Cepheids close contracting core cosmic egg cosmic rays Crab Nebula detected determined diameter direction distance Earth electrons emitted energy eons existence explosion fact finite globular clusters gravitational field Greek helium helium-4 Herschel Hubble's hydrogen hydrogen atom infinite infrared interstellar Jupiter light light-years luminosity luminous Magellanic Clouds magnetic field magnitude main sequence mass massive matter microwave emission miles Milky millions Moon moving neutrinos neutron novae nuclear reactions nucleus objects observed orbit Palomar Observatories parallax particles percent period photons physicist planetary planets produced proper motion quantity quasars radial velocity radiation radio sources receding red shift region rotation seemed Shell Sirius Solar system space spectral class spectral lines spectrum sphere spiral arms stellar Sun's supernova suppose surface telescope temperature theory tion Universe Venus visible wavelength white dwarf Wilson and Palomar X-rays