Changes

[[Image:Yerkeshalley2.jpg|right|thumb|300px|Illustration of how Halley's Comet might have looked to a naked-eye observer standing on the ground of Yerkes observatory in 1910. Moon at left, Halley's at right. Relative sizes are correct and this is the way an extremely bright comet actually looks. Although its appearance suggests motion, comets do not swoop through the sky; their position changes slowly over many hours.]]

[[Image:Yerkeshalley2.jpg|right|thumb|300px|Illustration of how Halley's Comet might have looked to a naked-eye observer standing on the ground of Yerkes observatory in 1910. Moon at left, Halley's at right. Relative sizes are correct and this is the way an extremely bright comet actually looks. Although its appearance suggests motion, comets do not swoop through the sky; their position changes slowly over many hours.]]

==See also==

==See also==