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Jupiter60
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- TL;DR Summary
- Nemesis star
Does the Nemesis star really exist? I don't think it does. If the Sun had a companion star it should have been detected by now. Stars don't go hidden.
Indeed. Stellar nurseries often form dozens, hundreds, or thousands of stars in a confined area. It would be no surprise if the Sun had a close companion that was lost shortly after formation. Open star clusters, which is where the Sun likely formed, tend to 'disintegrate' over time.Jupiter60 said:I just had a look at the Wikipedia article on Nemesis. It says that in 2017 that some scientist said that thought that the Sun may have had a companion star in the past, but it left the Solar System more than 4 billion years ago. This is a possibility. The reason why we would not be able to detect the historical companion star is because it is no longer a companion star, but got separated.
The Nemesis star, also known as the "death star" or "doomsday star", is a hypothetical companion star to our Sun that is believed to orbit at a great distance and have a significant influence on the outer regions of our solar system.
The idea of the Nemesis star was first proposed in the 1980s by scientists Richard A. Muller and Daniel P. Whitmire to explain the periodic mass extinctions on Earth. They suggested that the gravitational pull of the Nemesis star could cause disturbances in the Oort cloud, leading to comet showers and catastrophic events on Earth.
Despite extensive research and numerous studies, no concrete evidence has been found to support the existence of the Nemesis star. Some scientists have proposed that the supposed effects of the Nemesis star on our solar system can be explained by other factors, such as the gravitational influence of passing stars or the natural cycles of the Sun.
The majority of scientists do not believe that the Nemesis star exists. The lack of evidence and the inability to detect such a distant and faint object make it highly unlikely. Additionally, the proposed effects of the Nemesis star on our solar system have been challenged by alternative explanations.
Even if the Nemesis star were to exist, it would be too far away to have any significant impact on Earth. The proposed effects of the Nemesis star, such as comet showers, occur on a timescale of millions of years, making it an unlikely threat to our planet. Furthermore, the lack of evidence for its existence further diminishes the possibility of it posing a danger to Earth.