With the International Year of Astronomy now in full swing, leading figures from the world of astronomy reveal what they think are the biggest challenges for the subject
As US President Barack Obama takes office, his leadership will be needed to reduce the dangers of the world’s nuclear weapons and to stop nuclear materials from falling into rogue hands, argue...
To practising physicists, the great equations of physics might seem obvious, logical and trivial. But to their discoverers, Robert P Crease argues, that was far from true