Astronomy can best be described as a/an
a. study of objects beyond the earth's atmosphere.
b. air force pilot on a naval carrier.
c. daily horoscope.
d. study of objects pertaining to the interior part of the earth.

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

The two required components for a generator are