@dailymail: A 3,200-pound NASA space telescope is expected to re-enter Earth's atmosphere today, nearly 22 years after it was launched to study powerful cosmic explosions. Most of the Neil Gehrels Swift Observatory is expected to burn up during re-entry, although some debris could survive and reach Earth's surface. NASA says the exact re-entry location remains uncertain, but estimates the risk of anyone being harmed at around one in 2,100. #nasa #space #news #viral #Science