Which body is made up of hydrogen and helium and has an atmosphere of the same substance?

Look at the picture of the galaxy. Which kind of galaxy is shown?

The image shows two stars of the same color. Which picture and statement is correct?

Which body has a structure of rocky layers and an atmosphere of mainly nitrogen and oxygen?

There are two types of spiral galaxies. What is a difference between a barred spiral galaxy and a normal spiral galaxy?

When compared to other stars, the sun is not very unusual. However, the sun is very important to humans. What makes the sun more important to us than other stars?

Which of these characteristics distinguishes the outer planets from the inner planets?

Susan wants to identify the constellations Orion in the night sky. What tool would she use to find it?

Katherine wants to get a closer look at the moon. What tool would she use to look at it?

Name the moon phase shown.

Name the moon phase shown.

A chunk of frozen gases, rock, ice, and dust orbiting the sun.

The study of objects in space and their properties

The imaginary line around which Earth rotates

A chunk of rock or iron less than 1,000 km in diameter that orbits the sun

A nearly round body, smaller than a planet, whose orbit crosses the orbit of another body.

A group of billions of stars, objects that orbit those starts, gas, and dust.

Everything that exists, including galaxies and everything in them

To go around, or orbit, another object

A huge ball of hot, glowing gases in space that produces its own light and heat.

A star and all the planets and other bodies that revolve around it.

The path of one object in space around another object.

A large round body that revolves around a star.

To turn about an axis.