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When scientists looked at a cluster of ancient stars, they noticed a few that appeared younger than the rest. These stars are the same age as the others, yet they look younger. Like a vampire, these stars suck the life from others.
In certain binary systems, a Vampire Star is considered a smaller star (known as blue straggler) that ‘sucks’ material from an ageing neighbor. The smaller star becomes bigger, hotter and bluer, and its companion on the other hand, becomes a small piece of stellar remnant; hence the name, “vampire star.” The bigger star or companion becomes a remnant.
Zombie Star
The term "zombie" has been applied to a few different types of star systems, but the most well-known scenario involves a low-mass white dwarf star exploding in a Type Iax supernova, which means that the star survives what is normally a fatal blast. After that, it is deemed an undead zombie star.
Witch's Head Nebula
Nebulas are enormous clouds of dust and gas that often act as stellar nurseries for successive generations of stars. They are particularly captivating phenomenon because they form ghostly, ethereal shapes, which people frequently anthropomorphize for kicks. Exhibit A: The Witch Head Nebula, located 900 light years from Earth and illuminated by the nearby giant star Rigel.