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Enormous filaments of excited gas arching over the Sun’s surface and extending hundreds of thousand of kilometers outward are called

Moonquakes are believed to have caused the Moon’s

Pulverized rock is believed to make up the Moon’s

Which of the following represents the longest distance?

Craters that filled with lava then later cooled are called __________. These areas are dark spots on the moon becuase they are poor reflectors of light.

__________ is an extremely large collection of stars bound together by mutual gravitational attraction.

The Sun’s energy is generated from the fusion of

Which of the following is(are) believed to be material that never collected into a single planet?

Which of the terrestrial planets has rings?

The planet Jupiter has the largest moon (Ganymede) and the most moons (67 known) of any planet in the solar system. Most moons are small, but of the 181 known moons in the solar system, Earth’s moon is larger than all but __________ other moons and is even larger than Pluto.