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160 pages, Paperback
First published January 1, 1951
The sun is a mass of incandescent gas: its core is a gigantic nuclear furnace where hydrogen is built into helium at a temperature of millions of degrees.
The sun is a miasma of incandescent plasma
The sun's not simply made out of gas
No, no, no
NORTH CIRCUMPOLAR CONSTELLATIONS
At about 40 degrees north latitude the following are considered the major circumpolar constellations: Big Dipper (Ursa Major); Little Dipper (Ursa Mi-nor); Cassiopeia, the Queen; Cepheus, the King; Draco, the Dragon. To locate these con-stellations, use the accompanying chart. Facing north, hold the opened book in front of you so that the current month is toward the top. The constellations are now about as you will see them during the current month at 9 p.m. To see how they will appear earlier, turn the chart clockwise; for a later time, counterclockwise. A quarter of a turn will show how much the positions of the stars will change during a six-hour period.