Universe, Galaxies, Stars, and Solar System Test

Satellites and space stations are used for all of the following except

​ One astronomical unit is equal to the distance from the Sun to the ________

What do all of the inner planets have in common?

​Our galaxy is the ________ galaxy.​

The asteroid belt is located between

Gravity starts to form the beginnings of a star. What is the name for a star nursery?

The planet closest to the Sun is

Aristotle and Ptolemy developed an early model of the solar system. Which of the following objects is at the center?

Which OBJECT in the Solar System has the most mass?

What is the name of the explosion that began the universe?

When compared to the gases around them on the sun, sunspots are

The largest planet in the solar system is

What do the first four outer planets have in common?

There are forces that keep moons and planets in orbit around the sun and form stars. What is the main force?

The Milky Way is an example of

After a star dies, the gravity can be so strong that it pulls the into a smaller and smaller space. What is this called?

The remains of a star with gravity so strong that even light cannot escape is a

What instrument did scientists invent to study the different objects in the night sky?

A galaxy is made up of gas, dust, and many stars. What do all stars have in common?

Conditions required for life on Earth include

Which feature of the sun do astronomers use to observe the sun's rotation?

A streak of light made by a chunk of rock or dust entering Earth’s atmosphere is called a(n)

A light – year is