How would you classify an object made of dust particles, rocks, frozen water, methane, and ammonia that orbits the sun.

The Big Bang Theory best describes how the _________________ 13 to 15 billion years ago.

Comparing the inner and outer planets of our solar system, what is the major difference between them?

The asteroid belt is located ___________________, dividing inner and outer planets

The coolest stars in the sky are ____ in color.

Of the 4 known galaxy shapes, the Milky Way is a ____________ shaped galaxy.

________ was the first to redesign the Solar System model in the 1500’s to have the sun in the center, instead of the Earth

Mercury is an inner planet. All inner planets can be described as:

Betelgeuse is a red supergiant star, its temperature is probably _____.

If you travel from the Sun towards Pluto, what will you go past?

The dwarf planet Pluto takes much longer to revolve around the Sun than the planets do. This is because Pluto is ____.

What characteristics do the four outer planets have in common?

What would make you weigh half as much as you do right now on Earth?

As a comet vaporizes and breaks up, small rock particles that are smaller than asteroids drift off and are called ____.

Small pieces of space rock that enter Earth’s atmosphere at speeds of 15-70 km/s and burn up are called __________. They are often from comets that have broken up.

______ are pieces of space rock that strike the surface of a moon or planet.

Our universe will likely _______ in the future according to most astronomers.

Of the listed planets, which one orbits the sun the fastest and why?

Which of the following correctly orders the objects from closest to Earth to farthest from Earth?

Comets probably originated in the ______.

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