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'Cannibalism' between stars
Stars do not accumulate their final mass steadily, but in a series of violent events manifesting themselves as sharp stellar brightening. Stellar brightening can be caused by fragmentation due to gravitational instabilities in massive gaseous disks surrounding young stars, followed by migration of dense gaseous clumps onto the star, according to a new theory.
Turbulent times: When stars approach
A violent wind blown from the heart of a galaxy tells the tale of a merger
New study challenges Jupiter's role as planetary shield, protecting Earth from comet impacts
Galactic center's gamma rays unlikely to originate from dark matter, evidence shows
The frigid 'Flying Saucer': Unexpectedly cold grains in planet-forming disc
Bright sparks shed new light on the dark matter riddle