Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. For the past 25 years, an intrepid group of astronauts have spent the holidays 250 miles above the Earth. The crew living and working aboard the International Space Station (ISS) get to eat their turkey (but can’t drink seltzer or use salt) and open presents while traveling 17,500 miles per hour and circling their home planet every 90 minutes.  Despite that unique vantage, the celebrations often look quite similar to how they would here on Earth. NASA astronauts share special meals packed by the Space Food Systems Laboratory at the agency’s Johnson Space Center in Houston, where the crews will select their menus with help from nutritionists and food scientists before launch. The cargo launches arriving before special occasions often include Holiday Bulk Overwrapped Bags filled with foods including clams, oysters, green beans, and smoked salmon, and shelf-stable treats such as icing, candies, almond butter, and hummus.  ISS crew members will also use the opportunity to connect with loved ones through …