Stellar explosion: What to know about T Coronae Borealis nova

It’s not exactly new but there will be an extra star in the sky that will be visible to the naked eye in the coming months in Northern California. T Coronae Borealis is a binary star system comprised of a cool red giant and a hot white dwarf star 3,000 light years away. The smaller white dwarf has been stealing matter from the red giant and appears to be getting ready to emit a burst of energy which will make it visible for at least a few days. It is known as a recurring nova where matter, mostly hydrogen, is collected by the white dwarf until enough mass is reached, creating a fusion reaction. That will then emits a burst of energy, which includes visible light. This process has been going on for a long time and occurs about every 80 years in this system.