NASA is getting into the festive spirit, sharing some stunning images of the Christmas Tree Cluster and the Cosmic Wreath.

Don Pettit has a long history of inventing new tools for use in space. Astronauts are many things. They're often scientists, engineers, or pilots. And in the case of NASA astronaut Don Pettit ...

The star clusters are a marvel of deep space, showcasing the ... visual phenomena (even optical illusions in space), but the beauty of cosmic photography never grows old. Not only are the images ...