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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.

A rocky body between the orbits of Mars and Jupiter is an ________.

A featureless spectrum, such as a rainbow, is said to be __________ .

A fatal flaw with Ptolemy’s model is its inability to predict the observed phases of:

According to the Zeeman effect, the splitting of a sunspot’s spectral lines is due to