Nemesis is a masculine noun of Greek origin, which indicates revenge or justified indignation. It is also used synonymously with enemy.
Nemesis can also be used to represent something a person cannot conquer or achieve, or a powerful rival which is very hard to win. In many cases, nemesis is a reference to an agent or act of punishment or revenge.
Character that is part of literature, part of the saga "Percy Jackson and the olympians" by Rick Riordan.
In the Marvel universe, there are several characters with the name Nemesis, but one of the best known is the super villain created by Mark Millar, who is also the author of the book "Kickass Breaking Everything!" which has also been adapted to movie theater.
Nemesis in Greek Mythology
In Greek mythology, Nemesis was the goddess of revenge, who punished the degenerate behavior of human beings. Nemesis is an advocate of balance, justice and divine revenge, who punished men who broke the established laws. In addition to being an opponent of arrogance and pride, Nemesis also defended people who had been punished for crimes they hadn't committed.
Nemesis and Astronomy
In the context of astronomy, Nemesis is a hypothetical star, that is, whose existence has not yet been scientifically proven. According to some proponents of this theory, the star Nemesis is a small star with an orbit thousands of times farther than Pluto's.
In an episode of the History Channel documentary "The Universe", Nemesis is referred to by some as the "evil twin of the sun", because hypothetically it is responsible for catastrophic events every 26 million years (duration of its orbit around the Sun).