Planets wobble in their orbits due to
A) the gravitational attraction to other planets.
B) uncertainties in the inverse-square law.
C) elliptical-orbit quirks.
D) all of the above
E) none of the above
Answer: A
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A) irregular galaxies. B) lenticular galaxies. C) barred spiral galaxies. D) spheroidal components.
Explain why we have seasons and compare/contrast the cycle of seasons for both hemispheres
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Current evidence suggests that some massive jovian planets orbit at close orbital distances to their stars. How do we think these planets ended up on these close orbits?
A) These planets migrated inward after being born on orbits much farther from their stars. B) These planets were able to form close to their stars because their solar nebulas were cold in temperature. C) Despite their large masses, these planets are made of rock and metal and therefore could form in their inner solar systems. D) These planets were captured from other solar systems.
Define shepherd moons and give an example of them at work
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