These are noctilucent (night ... Mars clouds are typically made of water-ice or frozen carbon dioxide, also known as dry ice. Curiosity has been observing these clouds for several years. While ...

Follow Starry Night on Twitter @StarryNightEdu and Chris at @Astrogeoguy Editor's note: If you have an amazing skywatching photo and would like to share them with Space.com's readers, send your ...