The blue sky above the Earth is so integral to the human experience we don't often question it, but there is a scientific explanation as to why the sky is blue.

More than 74 fires are burning across British Columbia, 60 fires in Alberta, and dozens of other fires burning throughout Manitoba, Ontario, Saskatchewan, and the Northwest Territories. That's why the ...

Don't miss the waxing crescent moon shine alongside Spica and the stars of the constellation Virgo in the hours following sunset on July 30. Look 20 degrees above the southwestern horizon in the hour ...