Gravity is a ubiquitous part of our daily lives — whether we’re being tragically brought to our knees after tripping on the rug or gleefully jumping from a swing’s apex. But despite how common the ...

Zone of divergence: A section through the centre of mass, O, of a planet and the single point, S, on the surface of the planet that touches its Brillouin sphere. The point O is the centre of the ...

Amanda Weltman receives funding from the National Research Foundation of South Africa and the Department of Science and Technology of South Africa. Jeff Murugan receives funding from the National ...