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Only Binary Stars Can Create Interacting Supernovae

July 10, 2026
Only Binary Stars Can Create Interacting Supernovae
By Evan Gough (https://ift.tt/1EBb3Na)

Most stars, including massive ones that will end their lives as supernova explosions, are in binary pairs. Some of the massive, donor stars in these relationships will explode as interacting supernovae due to material ejected before it explodes. The material forms a cocoon of circumstellar material that is illuminated for much longer than a typical supernova. Image Credit: ASIAA/Sung-Han Tsai

When a massive star reaches the end of its life, it explodes as a supernova that can light up the sky for months. But some supernovae stay luminous for much longer, and astrophysicists have wondered what causes their extended brightness. New research points to binary stars, where one star expels material right before the explosion that creates a cocoon of circumstellar medium.



July 10, 2026 at 09:17PM
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