
A case of astronomical fratricide is doomed to end in a fiery supernova bright enough to be spotted from Earth during the day.
A study published this August in the journal Monthly Notices of the Royal Astronomical Society investigated a binary star system about 10,000 light-years from Earth called V Sagittae. Researchers finally solved the century-long mystery behind what makes it so freaking bright. They found that the system is strangely luminous because one of the pair, a super-dense…

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