The solar system



In this introductory space physics video, we’ll look at our place in the solar system and its part in the Milky Way.  The video includes an overview as to how the geocentric (Earth-centred) model of the solar system was replaced by the heliocentric (sun-centred) model, an excellent example of the way in which new experimental evidence can lead to the refinement or replacement of an existing scientific model.  It ends with brief descriptions and explanations of a number of different methods which are used for observing the universe.

Key Words

moon, asteroid belt, comet, Milky Way, solar system, telescope, planet, model, dwarf planet, heliocentric, sun, geocentric, satellite