The Winter Triangle is formed by the stars Betelgeuse, Rigel, and Aldebaran
Indicate whether the statement is true or false
FALSE
Physics & Space Science
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We know how fast a distant galaxy is moving away from us on the basis of its
A) mass. B) color. C) spectrum. D) age. E) luminosity.
Physics & Space Science
The study of fossils is called
a. cryptology. b. petrology. c. paleontology. d. historical biology.
Physics & Space Science
Two charged bodies separated by a distance d exert an electrical force on each other. The distance d is doubled. The electrical force on each body is now 1/2 of the original force
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
Absorption lines in the spectra of supergiant stars are broader than the same spectral lines in main sequence stars of the same spectral type
Indicate whether the statement is true or false
Physics & Space Science