This free course, Galaxies, stars and planets, is a general introduction, including scale of the universe from the very large to the very small; orbits and gravity; the Solar System; the Sun and other stars; galaxies and the composition of astronomical objects.
Course learning outcomes
After studying this course, you should be able to:
understand the scale of items within the Universe
appreciate the wide variety of objects contained in the Universe
understand the relative sizes of the planets within the Solar System
calculate how long it takes for light to reach the Earth from the Sun.