A(n) ____________________ is a circle whose center moves in a circular orbit around the Earth
Fill in the blank(s) with correct word
epicycle
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The "big bang" was an explosion of material that created galaxies flying away from the center of the explosion
a. True b. False Indicate whether the statement is true or false
The redness of the lunar eclipse is due to
A) refraction of sunsets and sunrises all around Earth. B) infrared light continually emitted by the Moon. C) scattering of lower frequencies of light by the Moon. D) dim light that is incident upon the Moon by Jupiter and other planets.
The density of the cosmos at the end of the lepton epoch was comparable to iron, about ten times denser than water
Indicate whether the statement is true or false
The solar magnetic field is strongest in those regions called ________, which are poles and usually thus occur in pairs
Fill in the blank(s) with correct word