- 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.