60. Q. By what name is the scientific theory known which attempts to
state the method by which the solar system came into its present form?
A. The nebular hypothesis.
61. Q. How are the stars in a constellation indicated? A. The brightest
stars are indicated in order by the letters of the Greek alphabet.
After these are exhausted the Roman alphabet is used in the same
manner, and then numbers are employed.
62. Q. What have many of the brightest stars also received? A. Proper
names by which they are known.
63. Q. Around what star do the stars of the northern circumpolar region
appear to revolve? A. Polaris, the North Star.
64. Q. Name five northern circumpolar constellations. A. Ursa Major,
or the Great Bear; Ursa Minor; Cepheus; Cassiopeia, or the Lady in the
Chair; and Perseus.
65. Q. When are the circumpolar constellations visible in northern
latitudes? A. They are always visible.
66. Q. How many stars does the constellation of Ursa Major contain that
are visible to the naked eye? A. One hundred and thirty-eight.
67. Q. What does a group of seven stars in this constellation form? A.
The Great Dipper.
68. Q. What are the names of the stars in the Dipper? A. The pointers
are Dubhe and Merak; the stars forming the handle are Benetnasch,
Mizar, and Alioth; the star at the junction of the handle and the bowl
is Megrez, and the remaining star at the bottom of the basin is Phad.
69. Q. How many stars does Ursa Minor contain? A. Twenty-four stars, of
which only three are of the third, and four of the fourth magnitude.
70. Q. What is a cluster of seven of these stars termed? A. The Little
Dipper.
71. Q. What do three stars besides the double pole star form? A. The
curved-up handle of the Little Dipper.
72. Q. How many stars visible to the naked eye are contained in the
constellation Cepheus? A. Thirty-five.