Veiled supernovae provide clue to stellar evolution

At the end of its life, a red supergiant star explodes in a hydrogen-rich supernova. By comparing observation results to simulation models, an international research team found that in many cases this explosion takes place inside a thick cloud of circumstellar matter shrouding the star. This result completely changes our

This supernova shock wave slammed into its companion star

supernova

Fast followup allowed astronomers to see the cause of the explosion. Type Ia supernovae are one of the most important tools in an astronomer’s toolkit. These bright but brief events are one of just a few reliable “standard candles” that allow us to measure not only vast distances accurately, but also

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