You can soon observe a 'new' star glow.

Will a new star appear tonight?   

In anticipation of a massive star explosion, scientists are asking that question.   

The star exists, but it's invisible to the naked eye for now.   

Corona Borealis is a double star system 3,000 light years away. The name implies a binary star system has two stars. A huge red giant star and a compact, dense white dwarf are involved.   

The white dwarf absorbs and warms the red giant's mass as they orbit each other. A thermonuclear explosion—a nova—brightens the white dwarf enough for us to see it.    

(Interestingly, our sun will become a red giant and a white dwarf toward its conclusion. First, it will swell, shedding its outer layers and eliminating all life on Earth, then become compact and incredibly dense.   

To estimate T Cor Bor's brightness, you must understand how astronomers measure brightness. Contrary to popular belief, objects with lower magnitudes are brighter.    

Normal brightness for T Cor Bor is 10. It's expected to sparkle like a second-magnitude star.   

Astronomers call variable stars stars that fluctuate brightness. This variable star is a recurring nova.    

However, when remains the major question? T Cor Bor's grand explosion—when?   

Thanks For Watching

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