Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

It’s a powerful technique, but small uncertainties at each step can add up, something critics argue may be behind the Hubble ...

Contact lenses get pretty thin nowadays, but they’ve got nothing on a new lens from scientists at Stanford and the University of Amsterdam. The team has created the world’s thinnest lens, measuring ...

A tiny bubble of graphene could be used to make an optical lens with an adjustable focal length. That is the claim of physicists in the UK, who have shown that the curvature of such bubbles can be ...

The idea of having images and text streamed live across your contact lenses has been used in many a Hollywood film. Now an international team of researchers has developed the first working prototype ...

Einstein’s theories of relativity propose that forward time travel is theoretically feasible by nearing light speeds, but backward time travel presents more challenges. Theoretical models like ...

His photographs show scientists and experiments, large physics facilities and tiny devices, enthusiastic crowds of conference participants and lone researchers absorbed in thought. For almost half a ...

Given their tiny size, individual atoms are notoriously tricky to see and manipulate, but finding ways to do so would be extremely useful. The invention of the laser in the 1960s eventually led to the ...

John Pendry is a physicist at Imperial College London who laid the theoretical foundations for the invisibility cloak and superlenses capable of producing the sharpest ever images. He talks about the ...