Stars in the Universe Module A Chapter 1 Grade 6

Scientists measure the distance to stars in… light-years

Light travels from the sun to Earth in about… 8 minutes

The hottest stars are… blue

The sun is a… mid-life star & is the closest star to Earth

Stars are found in groups called… galaxies

Elliptical Galaxy Shaped like sphere that is stretched out at ends

Spiral Galaxy Sweeping arms extending from a densely packed center The Milky Way is a spiral galaxy

Irregular Galaxy Contains many young stars Generally the smallest of the 3 galaxies

Earth is a planet in our solar system. The solar system is on one of arms of a spiral galaxy called the Milky Way. The Milky Way is in a group of galaxies called the Local Group. This group is part of the universe. Universe

Stars begin to form when… hydrogen & dust are pulled into a ball by gravity

The energy inside a star that results in visible light is produced by.. nuclear fusion Two atoms fuse together by the process of… nuclear fusion

Just before it dies, a massive star turns into a… supernova

Clouds of gas & swirling dust in spaces between stars are… nebulas

Concept Map

This page was copied from Nick Strobel's Astronomy Notes. Go to his site at for the updated and corrected version.Nick Strobel's Astronomy Notes