Why do some stars become 'supernova impostors'? Astronomers still don't quite know

AI Briefing

• – Astronomers call this 'eruptive mass loss', a phenomenon where a star's outer layers are stripped away in a spectacular display.
• – The exact cause of this process is still unknown, with scientists proposing various theories.
• – Researchers are working to better understand the stellar drama behind these 'supernova impostors'.