Closest known flyby of star to our solar system: Dim star passed through Oort Cloud 70,000 years ago

17 febrero 2015

Astronomers from the US, Europe, Chile and South Africa have determined that 70,000 years ago a recently discovered dim star is likely to have passed through the solar system’s distant cloud of comets, the Oort Cloud. No other star is known to have ever approached our solar system this close — five times closer than the current closest star, Proxima Centauri. They analyzed the velocity and trajectory of a low-mass star system nicknamed «Scholz’s star.»