The Secret Behind Light's Journey Through Space Visible light travels in electromagnetic waves, which we see as the colors of ...

This week, Morning Brief reader Collette wrote in to ask, "There may be blue sky, but what makes for a deeper blue in one ...

The sky shifts from blue to red as the day ends. This film uncovers the science of light scattering that paints Earth’s skies.

A blood moon is one of the most striking celestial events, captivating skywatchers across the globe. During a total lunar eclipse, the Earth moves directly between the Sun and the Moon, casting its ...

The rocky world will be visible for a brief window after sunset. Mercury reaches its point of greatest eastern elongation on Friday (July 4), presenting an excellent opportunity to spot the rocky ...