Scientists using radio wavelength data from the Australian Square Kilometre Array Pathfinder (ASKAP) spotted a strangely symmetrical sphere located thousands of light-years away. The “sphere” is likely the result of a Type 1a supernova shockwave, though astronomers aren’t sure exactly how far away the this supernova remnant is from Earth—either 7,175 light-years or 25,114 light-years. One such mystery is the curious case of supernova remnant (SNR) G305.4–2.2, nicknamed Teleios. A Greek word meaning “perfect,” Telelios references the near-perfect symmetry of what appears to be a sphere of ejected star material—aka a supernova remnant. If it is the results of a Type 1a supernova, then its likely that this symmetrical mystery is either 7,175 light-years or 25,114 light-years away, making the sphere either 46 light-years across or 157 light-years across, respectively.