Light and matter can remain at separate temperatures even while interacting with each other for long periods, according to ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still daring to test it. Some theories of quantum gravity suggest light might ...

You can watch the northern lights from Finland, courtesy of Northern Lights Alert. Experience the northern lights from the ...

Light plays an important role in many aspects of our lives, from our sleep cycles to mental health. If our bodies don’t get the proper light we need, it can cause a chemical change in the brain that ...