Galaxies, Stars, and Planets
Clark, S. (Simon) ; Green, S. (Simon) ; Serjeant, S. (Stephen) (2016-03)
This free course is a general introduction to galaxies, stars and planets, 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. 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, and calculate how long it takes for light to reach the Earth from the Sun.
The Open University (OUUK)