You may remember that amount of 22 degrees from a previous Hey Ray about halos. The hexagonal ice crystals that refract light to create Sun and Moon halos are present when Sun dogs are created ...

When a bright light hits your eyes, your pupils constrict causing a sneeze. They say this reflex usually happens on initial exposure to the sun or a very bright light. If this is something that ...

"The gamma-ray burst traveled through intergalactic space at the speed of light for eleven billion years, during which time the Sun and the planets were born." — Timothy Ferris, in the film ...

Cosmic rays are particles from outer space that travel across the universe. They can be made by the sun, by other stars exploding, and even black holes. They move extremely fast, nearly the speed of ...

Just as the morning sun shoots out beams that light up the mountains, so our eyes shoot out beams, too, rays of comprehension ...

A total lunar eclipse will be visible across Canada late Thursday night and early Friday morning. Here’s how to see it.

They examined how the light varied across a range of X-ray wavelengths ... weighing 12 times the sun, and a stellar 'corpse' known as a white dwarf, a compact and hyper-dense object, with a ...