A young open cluster called NGC 2516 has a classical tidal radius of 10 parsecs (33 light-years) and a halo of stars spanning at least 500 parsecs (1,600 light-years), according to new research led by Princeton University astronomers. The open star cluster NGC 2516. Image credit: Centre de Données astronomiques de Strasbourg / SIMBAD / DSS2. NGC 2516 is an open star cluster located 1,217 light-years away in the southern constellation of Carina. Also...
