Noctilucent clouds, Earth's highest clouds, shine blue in the twilight sky from late May to August in the northern hemisphere ...

Skywatchers were left surprised, puzzled and awestruck by a mysterious streak of light slicing through the night sky.

There is an object flying through space about 20 light-years from Earth that has intrigued astronomers for quite a while. It ...

Enigmatic power player Barry Diller comes out (swinging) on moguldum, marriage, the movie business and the backlash to his ...