A superflare ten times more powerful than anything seen on our Sun has erupted on an ultra-cool star almost the same size as Jupiter–potentially changing our understanding of stellar activity. The star —an L Dwarf type named ULAS J224940.13–011236.9 — is the coolest and smallest yet observed to give off a rare white-light superflare. In fact, the body may be so small it can’t be considered to be a star at all!
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