Take a trip across the night sky and find out about the constellations. Physical processes -The Earth and beyond - Beyond our solar system Learning Points Our solar system is in a galaxy called the Milky Way. Solar systems grouped together are known as a galaxy. Groups of stars are known as constellations. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.