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Saturn orbits the Sun and follows which laws? Choose the best answer. I. Kepler’s first II. Kepler’s second III. Kepler’s third IV. Newton’s law of gravitation  

If the Sun passes directly overhead on at least one day per year, then

What is a blackbody?

The Moon physically changes its shape throughout its orbit around the Earth giving us the phases of the Moon we see.

The law of gravitation is termed universal because it is a property of all material objects.

The star Vega has an apparent visual magnitude of 0.03 and the star HR 4374 has an apparent visual magnitude of 4.87. It has been determined that both stars are at the same distance from Earth. What does this information tell us about the two stars?

The ecliptic can be defined as

A solar eclipse that occurs when the Moon’s umbra reaches Earth’s surface is called

A solar eclipse that occurs when the Moon’s umbra does not reach Earth’s surface is called

The gibbous Moon is never visible in the daytime sky.