hip-77227

Its story

25 Serpentis is a variable blue B-type star within the body of the Serpent, the only constellation split into two halves —Caput and Cauda— by the Ophiuchus who holds it. Its surface burns at tens of thousands of kelvin and flickers slightly in brightness, a hallmark of massive stars driven by deep-layer instabilities. From 450 light-years, its light crossed space as Tycho Brahe observed the 1572 supernova that would reshape cosmology.