Mars' moons are probably captured asteroids.
Answer the following statement true (T) or false (F)
True
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The air temperature where the humidity reaches the saturation density is called the ___________
Fill in the blank(s) with correct word
133°F is how many degrees Celsius?
a. 31 c. 56 b. 49 d. 158
Why does the Doppler method only provide a measure of the minimum mass of a planet?
B) Without a transit observation, the size and therefore density of the planet is unknown. C) We do not know the exact composition of the planet. D) The Doppler shift tells only part of a planet's orbital speed (the part toward and away from the observer). E) We do not have the technology to make a direct image of a planet yet.
In the Milky Way galaxy, gas and dust are found:
A) in molecular clouds. B) everywhere. C) in neutral hydrogen clouds. D) in dark nebulae. E) in emission nebulae.