Astronomy Ch03.6: Vocabulary In Context: Kepler's Planetary Orbits

Earth is located at one ______ of the Moon's orbit.

According to Kepler's second law, Jupiter will be traveling most slowly around the Sun's ______.

Earth orbits in the shape of a/an ______ around the sun.

The mathematical form of Kepler's third law measures the period in years and the ______ in astronomical units (AU).

According to Kepler's second law, Pluto will be traveling fastest around the Sun when at ______.

The extent to which Mar's orbit differs from a perfect circle is ______.