All spiral galaxies have both a disk and spheroidal component to their stellar populations
Indicate whether the statement is true or false
TRUE
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The ecliptic can be defined as
a. the plane that is perpendicular to the Earth's axis of rotation. b. the projection of the Earth's equator onto the sky. c. the path traced out by the Moon in our sky in one month against the background stars. d. the path traced out by the Sun in our sky over one year against the background stars.
The first small solid grains or flakes formed in our solar system by the process of ____________, the addition of material to an object an atom or molecule at a time
a. accretion b. sublimation c. hydration d. condensation e. vaporization
When you swing your partner at an old-time square dance, you lock elbows and your partner is also swinging you. As a result, you both move in a circle. For this reason,
A. your pull cancels out your partner's pull, making for zero net force and no acceleration. B. you and your partner must simultaneously pull each other. C. you both must push outward against each other. D. you must pull your partner toward you and your partner must push you.
The radio lobes of active galaxies can span ________ of light-years
A) tens B) hundreds C) thousands D) millions E) billions