Mysterious old stars that look oddly young found the fountain of youth via two means, new research finds. Some rely on vampirism to suck the life out of a companion star, while others are rejuvenated in cosmic collisions.
The strange stars exist among a tight group of stellar geezers in what's called a globular cluster. The whole setup called Messier 30 – an ancient knot of stars sitting 28,000 light-years away and within our Milky Way galaxy – is thought to have hit the scene about 13 billion years ago, when the universe was an infant.
Most of the stars look their age, bloated red giants that are about to call it quits. But a few, called blue stragglers, seem to have regained their youth. They look very much like hot young things
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