Invented the telescope

A large group of stars

The distance that light travels in a vacuum in one year

An instrument that collects and concentrates light from distant objects to make objects appear larger or brighter

Small bodies of ice, rock , and dust.

The ____________________ theory states that all objects in the solar system orbit planet Earth.

Neither Ceres not Pluto has cleared its orbit of other objects, that is why they are considered

The Milky Way, which is the galaxy where our solar system is located, has the shape of a

Io, Europa, Ganymede, and Callisto , four of Jupiter moons are also known as ______________________ in honor of the person who first saw them.

The ___________________ states that the sun in the center of our solar system and that planets orbit around it.

The biggest planet in the solar system

The closest planet to the sun

The amount of planets in the solar system

A galaxy close to the Milky Way

The star closest to us that gives us light and energy

Huge telescope in space