Gravity is pretty hard to avoid. It’s really the first and last thing we have to deal with in a day; our muscles contract to raise our bodies upright against gravity, and in the evening we give in to gravity, laying down and resting. Gravity defines everything, dictating the physical structure of most life on earth, and – most importantly – gathering together the detonated space dust that is ‘matter’ into helpful things like planets and stars. In this video, high school teacher Dan Burns employs a large sheet of Lycra to demonstrate the essence of space-time fabric, a seemingly sci-fi term that explains how gravity works.

Watch the video below: