Twice each year, in June and July, the setting sun aligns precisely with the Manhattan street grid creating Manhattenhenge. Rain and clouds may block Wednesday's viewing, if so, check back on Thursday ...

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

Expect partly to mostly cloudy skies tonight, with lows in the 40s and 50s, and a dry start to the big race tomorrow, with ...

A note overlaid on the video says, "Never in my life have I seen a cloud so big it blocks the sunrise ... "Because the sun is near the horizon—it's sunset—it's beneath the cloud.

Wildfire smoke as well as cirrus clouds have been in play in recent days ... so is it just these factors that create them? A big part has to do with the position of the sun in the sky.

As the storms moved out, a roll cloud moved in. Known for their low and horizontal cylindrical shape, roll clouds are a type of arcus clouds that are commonly formed along the outflow boundary of ...

Vibrant yet delicate hues of orange painted the sky, a thin veil of cloud cover soaking up the fiery tones. The dazzling sunset was also our earliest sunset of the year — arriving at 4:46 p.m ...

ABOUT sunset on the evening of Sunday, July 13, being at Ripon with my son, our attention was arrested by an unusual appearance, which I will briefly describe. Two large clouds, covering a ...