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Which three played a role in the finding of Neptune?

Most astronomers now regard Pluto as the largest ________ and not a planet.

Inside the Roche Limit

Compared to Earth, Venus spins very slowly on its axis.

While featureless in visible light, we can see some detail in Venus’ clouds using __________ .

Because it has a higher percentage of _________ , Neptune appears even bluer than Uranus.

The retrograde orbit of Triton dooms it to spiral inward toward Neptune, perhaps someday to make a ring system.

Of the planets, __________ is the least dense, and could float on water.

Jupiter’s axial tilt is similar to that of Mercury, while Saturn’s is more like ours.

Which planet shows the widest range of surface temperatures between day and night?