Stay up late scrolling? Don’t Geminid if I do.  Each December, the Geminid meteor shower lights up skies across our national parks, no filter needed. Rule of thumb: Layer up while you look up at this dazzling display of shooting stars. Rest your thumbs and enjoy this starry showcase.   Image: Stars seen in a dark night sky at Mammoth Cave National Park #geminids #stargazing #nationalparks #meteorshower