Which of the following space objects is a satellite?

When a satellite always keeps the same side toward the object it is orbiting, the satellite is

Which of the following natural phenomena is partly caused by Earth's revolution around the sun?

According to Kepler's third law of planetary motion,

According to Kepler's first law of planetary motion,

_________ observed “orbital anomalies” such as when Mars moved backward in its orbit.

____________ is credited with developing the telescope which magnified objects up to 3X.

___________ designed and built his own telescope. This telescope could magnify objects up to 20X.

Kepler was Brahe’s assistant and they didn’t get along very well. Because of this, Brahe set Kepler the task of understanding the orbit of _________.

If the planets closer to the sun don't_______________, they'll fall into the sun.

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