A spiral galaxy can be described as what type of shape? (1 point)

• oval
• triangular
• pinwheel
• no distinct shape

• pinwheel

What lies at the center of the Milky Way galaxy? (1 point)

• the sun
• a black hole
• North Star
• Earth

• a black hole

How are asteroids and comets similar? (1 poirt)

• Both orbit the sun.
• Both are frozen.
• Both are composed of gases.
• Both are composed of rock.

• Both orbit the sun.

At certain times of the year, five planets can be seen from Earth, including Mars and (1 point)

• Uranus.
• Neptune.
• Juno.
• Saturn.

• Saturn.

What caused people to accept the geocentric model of the universe? (1 point)

• Noticing the gravity will eventually pull all the planets and the universe back together.
• Objects seem to move across the sky, and Earth did not feel like it was moving.
• Measurements and mathematical models demonstrated that the planets orbit around the sun.
• Telescopes allowed for a much detailed view of the circular orbits of the planets.

A spiral galaxy can be described as a pinwheel shape.