Most clouds on the planet are made of water ... Spotted by the @MarsCuriosity rover, these unique clouds are made of carbon dioxide ice and are only observed at twilight. What this helps us ...

BBC Weather Watchers have been treated this week to red skies at night in the mornings - and unusual cloud formations. Lenticular clouds could be seen widely across Scotland over the past few days.

People along the Antrim coast woke up to unusual cloud formations on Friday, reminiscent of scenes from a science-fiction film. Lenticular clouds combined with the morning sunrise to create these ...

Northern Argentina was most affected by this unusual cloud pattern and saw as little as 80% of the long term July average. Clouds in this pattern were seen throughout the month, and this effect ...