A massive pulsating white dwarf star, designated J004925.25+312309.5, has been discovered by an international team of astronomers. This star, located in the star cluster NGC 2420, is the largest and most massive white dwarf known to date. It has a mass of 1.17 times the mass of the Sun and is about 700,000 times brighter than our Sun. The star is also the brightest known pulsating white dwarf star.

Astronomers have recently discovered a massive pulsating white dwarf star, J004925.25+312309.5, residing in the star cluster NGC 2420. This star is the largest and most massive white dwarf known to date, with an impressive mass of 1.17 times that of the Sun. It is also incredibly bright, shining at 700,000 times brighter than our Sun, making it the brightest known pulsating white dwarf. This discovery provides an exciting new opportunity to study white dwarf stars, and potentially shed light on the mysterious and poorly understood stellar evolution process.

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source: Phys.org