What unit is used to measure wavelengths?
a. arc second
b. photons
c. degrees
d. nanometer
e. pixels
d
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When deciphered correctly, an anticoded message ultimately becomes ____
a. a mathematic equation b. letters and words c. Morse code d. a picture of life on Earth e. music
What are the 3 parts of this type of galaxy, and which 2 might you see through a telescope?
A: Disk, bulge, and halo; would see bulge and disk, and wouldn't see halo. B: Disk, bulge, and halo; would see bulge and halo, and wouldn't see disk. C: Stars, Gas, and dust; would see gas and dust, and wouldn't see stars. D: Spirals, ellipticals, and irregulars; would see ellipticals and spirals, but wouldn't see irregulars. E: Spirals, ellipticals, and irregulars; would see irregulars and spirals, but wouldn't see ellipticals.
Circumpolar stars are stars that ________.
A. follow circular orbits around the celestial poles B. can only be seen from the poles of Earth C. neither rise nor set D. rise in the east and set in the west E. are pointed to by the celestial poles
________ is the planet with the slowest rotation period
Fill in the blank(s) with correct word