Black hole's spin is at the limits of possibility

NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) and the European Space Agency's XMM-Newton, have together accurately measured, for the first time, the spin rate of a black hole with a mass two million times that of our sun.

Heisenberg's Uncertainty Principle in doubt

Heisenberg's Uncertainty Principle is looking a little, well, uncertain, with the discovery that observation needn't disturb systems as much as thought.

Nepal plans new measurement of Mount Everest

Nepal's to carry out its own calculation of the height of Mount Everest, aiming to settle a long-running disagreement with China.