Across the pages of history, people from different cultures, communities and countries have celebrated the return of the sun, ...

For thousands of years, humans have worshipped the Sun. Our ancestors built monuments and temples to it, and used it to mark the annual cycle of seasons. For ancient Egyptians, their most important ...

A blue sky with the sun surrounded by a white circle bisected with a white line and two bright spots either side of the circle. A scientist recently snapped a series of shining arcs and halos of light ...

For more than two centuries, astronomers have treated the Sun’s spectrum as a solved problem, a textbook example of how light reveals the chemistry of the cosmos. Now a fresh look at that familiar ...

The vastness of space is quite difficult to imagine, especially considering the general measurement used to measure distances between objects is light years, but what does that actually mean? And how ...

This activity is part of the Science Friday Sun Camp collection! For 4.5 billion years, the Sun has generated energy to power the solar system. Visible light is the most obvious form of that energy.

At least three separate optical phenomena are visible in the new images. Each of which is created by light refracting through millions of perfectly aligned ice crystals in the upper atmosphere. When ...