Still-life artists know that to make an image of an object look like the real thing, they must account for the way light reflects off it. The appearance of these glimmers—their color, position and ...

For several centuries now, scientists have known that light behaves like a wave, expanding out from its source until absorbed or reflected by objects, which are in turn illuminated. In recent years, ...

A new satellite has become one of the brightest objects in the night sky, sparking concerns among scientists for the future of astronomy. The bright paths of BlueWalker 3 and other new satellites may ...

Interstellar object 3I/ATLAS — which is zooming through our inner solar system — appears to be emitting its own light, according to Harvard astrophysicist Avi Loeb. The observation by Loeb, if ...