Word: sun
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Dates: during 1980-1989
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...first step in linking the theory with astonomy came when two scientists from the Goddard Institute of Space Studies in New York connected the 26 million-year extinction cycle with the 26 million-year intervals between the sun's plunges through the dusty central plane of the Milky...
...sun is one of about 100 billion stars revolving in the Milky Way. All stars spin toward the center of the pinwheel-shaped galaxy, and each trip to the middle takes about 250 million years...
...sun spins inward it also bobs up and down through an imaginary plane that intersects the galaxy. The complete up-and-down trip through the debris-filled galaxy takes about 67 million years, and the sun slips through the most crowded region every 33 million years. During this time it could be blocked by the debris. The 33 million-year period corresponds roughly to the 26-million year cycle of extinction postulated by Raup and Sepkoski and the differences between the two figures can be accounted for by uncertainties in astronomical and geological datings, say the originators of the theory...
...many protestors as at the March On Washington a year earlier. But there was something special here--all the more telling because of the lack of attention it received. A thousand poor people came in from all over the country to broil for three days in the hot Texas sun--where temperatures reached upwards of 110 degrees--simply to exercise their First Amendment freedom, to express the injuries and wrongs that had been done to them by the Reagan regime...
...blood-red sun was just peeking over the eastern ridge of California's Mojave Desert when the space shuttle Discovery began to descend like a silver hawk in search of prey. As it shattered the sound barrier, a thundering crack! seemed to rend the sky in two, and a cheer swelled from the crowd below. Within minutes the ship had rolled to a halt along the right side of the runway at Edwards Air Force Base, kicking up massive clouds of dust. Not since the landing of the first shuttle had NASA officials been so openly emotional. Said Mission...