Around the world, people continue to report a baffling acoustic mystery: sudden, thunderous booms or eerie horn-like sounds ...

When Peter Mongillo looked up at the Saturday afternoon sky and saw what appeared to be a massive tear in the clouds above Marysville, he did what any curious observer would do: He snapped a photo and ...

When I saw it on the display, the emotion was overwhelming-I couldn't believe my eyes, I was witnessing something unique, ...

New moons are only visible during solar eclipses. This visualization of a tiny sliver, for example, is technically a crescent moon. NASA Goddard Space Flight Center via Flickr under CC BY 2.0 This ...