PhysicsProton's stretchiness is a puzzle for particle physicists The particles inside a proton move around when exposed to electric and magnetic fields, causing it to deform, but this behaviour isn't well understood 51¶¯Âþ
PhysicsEinstein's gravity principle still correct, finds most precise test An experiment conducted on a satellite in orbit found that Albert Einstein's ideas about gravity are still correct, with measurements accurate to one part in a quadrillion 51¶¯Âþ