Topics containing "comet"
observations, stars, Sun, star, observed, latitude, observation, planet, points, planets, degrees, earths, telescope, meridian, visible, apparent, atmosphere, instrument, phenomena, magnitude, bright, Moon, comet, horizon, space, eclipse, discovery, astronomy, polar, Greenwich, objects, corresponding, minutes, distant, sun, Newton, greatest, declination, accuracy, moons, transit, observers, plane, lunar, minute, correction, latitudes, hypothesis, brightness