NASA Planet-Hunting Satellite Discovers a Dying Star 'Switching on and Off'

upstart writes:

NASA planet-hunting satellite discovers a dying star 'switching on and off':

Deep within the cosmos, a fading star's quiet death was sharply interrupted. Instead of gracefully vanishing into the heavy darkness of space, as stars typically do, it coughed out a mysterious, prolonged flicker of light.

This "has never been seen in other accreting white dwarfs," Simone Scaringi, an astronomer at Durham University's Centre for Extragalactic Astronomy in the United Kingdom, said in a statement. "It appears to be switching on and off." Scaringi is lead author of a study on the star published Monday in the journal Nature Astronomy.

Every iridescent star that decorates our universe -- and those yet to add to the glittering collection -- will one day disappear. Slowly but surely, their luster, fueled by heaps of hydrogen gas, will dwindle as the supply runs out. Entering their final stages of life, they will become white dwarfs.

And NASA's Transiting Exoplanet Survey Satellite, or TESS, caught a unique glimpse of this particular white dwarf's strange behavior. The dying star is part of the two-star system dubbed TW Pictoris, located 1,400 light-years away.

Read more of this story at SoylentNews.