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 ...

As we continue to break new ground in the field of cosmology, the importance of carefully categorizing the objects we see comes into focus. Part of this stems from the fact that, increasingly, we find ...

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 ...

The eyes could be the windows to the mind, if not the soul. It turns out that simply thinking about a bright light is enough to change the size of our pupils, even if there isn’t anything real for our ...