A dazzling green fireball streaked across the pre-dawn sky Saturday, captivating witnesses from Maryland to Ontario, Canada.

The origin of a mysterious throbbing light racing behind clouds across parts of the northeastern U.S. and Canada over the ...

With a nickname like Big Sky country, it's no surprise Montana is the ultimate destination for this year's celestial events, ...

With a nickname like Big Sky country, it's no surprise Montana is the ultimate destination for this year's celestial events, ...

YR4 was first discovered in December last year by a telescope in Chile. The near-Earth asteroid is as big as a football field ...