Mammatus clouds cover the sky over the Ernst-Taehlmann ... (Photo by Hasan Akbas/Anadolu via Getty Images) The aurora borealis put on quite the show over the United States multiple times in ...

Unusual mammatus clouds were spotted on Wednesday morning in parts of the United Kingdom. The name mammatus comes from the Latin mamma which means 'udder' or 'breast'. The bulging cloud was made ...

Keen photographer Garry Hornby spotted them above Huntington in York and posted: "Stunning mammatus clouds over Huntington road this morning." Fellow club member Kieran Delaney also shared a photo ...

Keen photographer Garry Hornby spotted them above Huntington in York and posted: "Stunning mammatus clouds over Huntington road this morning." Fellow club member Kieran Delaney also shared a photo ...