Stars, Constellations, Galaxies, and the Universe

a huge ball of very hot gases in space

A group of stars that form a pattern in the sky

a system of millions or billions of stars, together with gas and dust, held together by gravitational force.

All of space and everything in it

a small rocky body orbiting the sun

a small body moving in the solar system that does not always stay in an orbit around the sun

a meteoroid that has entered Earth's atmosphere and produces a streak of light and is often called a "shooting star"

a meteoroid that reaches the Earth's surface without burning up completely

A loose collection of ice and dust that orbits the sun, typically in a long, narrow orbit.

a spherical region that surrounds the solar system, that extends from the Kuiper Belt to almost halfway to the nearest star, and that contains billions of comets