A video of a strange shadow line in the sky spotted from a plane has gone viral ... are narrow cirrus cloud streamers that form behind high flying aircraft." The NASA website explains: "When ...

Have you ever wondered how a cloud stays in the sky? In a recent conversation with my friend and colleague Alan Sealls, the AMS President-Elect told me that he pondered this very question ...

A rare seven-planet alignment will be visible in the early night sky ... see if cloud cover might impact your view on the night you plan to look up. Face southward during the early evening hours. The ...

The universe is huge, yet astronomers have looked at a few parts of the night sky over and over again ... Clouds are known as the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud ...