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The only planet with no atmosphere of consequence is ________.

Stefan’s law notes that the total energy radiated is proportional to the __________ power of the temperature of the blackbody.

The ___________ hypothesis is that the Earth does not occupy any special place in the universe.

Due to their great masses, all four Jovian worlds are much denser than the earth.

Which planet by itself contains the majority of mass of all the planets?

Which of these observations of Galileo refuted Ptolemy’s epicycles?

All the planets revolve around the Sun in the same direction.

All planets lie in orbits close to the ________ plane.

Knowing the peak emission wavelength of a blackbody allows you to determine its __________ .

The smallest planet, Mercury, has no moons.