Lesson: Stars and Galaxies Science • Third Year of Preparatory School

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In this lesson, we will learn about the Milky Way and how the light-year can be used as a measure of the distances between stars in the galaxy.

Students will be able to

understand that stars are very large, very hot objects that are very far away,
understand that a light-year is a unit used to measure astronomical distances,
know the length of a light-year in kilometers,
understand that there are billions of stars in a galaxy,
know that our galaxy is called the Milky Way,
understand that the Milky Way has a spiral shape,
know the major types of optical telescope,
understand that the Sun takes several hundred million years to orbit the center of the Milky Way,
know that the solar system is located in one of the spiral arms of the Milky Way,
know the definition of a light-year as the distance traveled by a beam of light in one year.