When sunlight filters through trees, you may get a corona effect where the rays from the light sources take on the colors of the rainbow.

Orion the Hunter is one of the sky's most noticeable constellations. Sirius is the sky's brightest star. As Earth revolves around the sun, they're both about to disappear for awhile. Here's how to star hop from Orion's Belt to Sirius.

Polaris - aka the North Star - marks the end of the Little Dipper’s handle. The 2 outer stars in the bowl of the Big Dipper always point to Polaris.

Data from ESA’s Gaia star-mapping satellite have revealed tantalizing evidence that the famous V-shaped Hyades - nearest star cluster to our sun - is being disrupted. The culprit may be a suspected population of dark matter sub-halos. Wow!

If you only ever learn one star mnemonic, make it this one!

This spectacular image features spiral galaxy Messier 106 and its diminutive neighbors, as well as a dense field of background galaxies and foreground stars.

On Good Friday, March 27, 1964, south-central Alaska heaved under one of the most powerful earthquakes ever recorded, registering a 9.2 on the Richter scale.

Sometimes, before a tornado strikes, the sky turns an eerie green color. The answer to why the sky is blue will help you understand why the sky is sometimes green before bad weather.

A strong tropical depression picking up moisture from the warm ocean caused widespread flooding in the Hawaiian islands.

The Ides of March are March 15. We in modern times probably wouldn't know about them - or know we're supposed to beware of them - if it weren't for William Shakespeare.