Overview

• Teleios, detected by the ASKAP radio telescope, is an almost perfectly spherical object emitting only radio waves, with no detectable X-rays.
• Its remarkable symmetry and extremely low surface brightness make it unlike typical Galactic supernova remnants (SNRs).
• Astronomers propose three distance and age scenarios for Teleios, ranging from 3,262 to 25,114 light-years and under 1,000 to over 10,000 years old.
• The Type Ia supernova scenario, potentially leaving a 'zombie star' remnant, is considered the most plausible, though unconfirmed.
• Researchers emphasize the need for high-resolution follow-up observations to uncover Teleios’s true nature and origin.