What are the small bits of rock and metal that collide with Earth's atmosphere?

a. meteors
b. comets
c. asteroids
d. meteorites
e. meteoroids


a

Physics & Space Science

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Where would the celestial equator appear to be located for an observer standing directly on one of the Earth's poles? Hint: Change your location on the Earth to the North Pole.

a. Directly overhead at the zenith. b. Between the zenith and the horizon. c. It would be parallel to and coincident with the horizon d. The celestial equator would not be visible.

Physics & Space Science

What are two advantages of CCDs over photographic films for astronomy?

What will be an ideal response?

Physics & Space Science

An electromagnetic wave with a wave length about the same as the diameter of an apple would be

A. x-ray. B. UV. C. infrared. D. microwave. E. radio wave.

Physics & Space Science

The leading hemisphere of Iapetus is much darker than the back side, which is icy

Indicate whether the statement is true or false

Physics & Space Science