Nibiru is a hypothetical planet that some believe exists in our solar system, often associated with doomsday predictions. The concept gained popularity in the late 20th century, suggesting that this planet has an elongated orbit that brings it close to Earth every few thousand years. Despite its intriguing nature, there is no scientific evidence supporting the existence of Nibiru. Astronomers and scientists have repeatedly debunked claims about its potential impact on Earth, emphasizing that such theories are based on misinformation and lack credible research.