A supernova explosion flung out a super-dense, whirling stellar core, sending it streaking across space at almost 2.5 million miles per hour with a glowing trail 13 light-years long in its wake.
A supernova explosion flung out a super-dense, whirling stellar core, sending it streaking across space at almost 2.5 million miles per hour with a glowing trail 13 light-years long in its wake.