Have you ever heard of snow rollers? We hadn't either. They're like the snowballs people roll to make snowmen. But, instead of people, nature rolls them.
Only a few of the original, sometimes-glinting Iridium satellites are still in low Earth orbit. They have 3 reflective panels that occasionally catch the sun and produce a visible flare lasting between 5 and 20 seconds.
Polaris - aka the North Star - is in the center of the great turning wheel of stars in this photo. It's the star around which the entire northern sky appears to turn.