By usual standards, no clouds of any kind form without our planet ... showcasing a colorful series of lights in the sky near Tromsø in Norway. Both sets of photographs can be viewed on the ...

Curiosity, a set of NASA 's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying ...

UFO-shaped cloud displays have appeared over the sky in a rare sight for parts of the ... present beyond the clouds and may exist even when no clouds are formed. The clouds can result in very ...

UFO-shaped cloud displays have appeared over the sky in a rare sight for parts of the UK ... However, these waves can be present beyond the clouds and may exist even when no clouds are formed. The ...