A NASA spacecraft has spotted strange light shifts near the heart of a supermassive black hole that could help scientists better understand the inner workings of these monstrous objects.

When it happens, you see flashing lights or floaters, which are sometimes dark or black. You may also experience an area of blurred or absent vision, sometimes described as a curtain coming down ...

Not getting the dreamy out-of-focus backgrounds you were hoping for from your dSLR's kit lens? Here's how to do it. Managing Editor Josh Goldman is a laptop expert and has been writing about and ...