From Russia Times:
Movement of an orange dwarf star with a mass of about half that of the Sun will eventually bring it right to the solar system, stellar data analysis indicates.It has been hits by big astronomical bodies that have created the "punctuated equlibrium" dynamics in our evolutionary history.
The Gliese 710 from the constellation Serpens Cauda is due to arrive in about 1.5 million years, and has an 86 per cent probability of passing through the Oort Cloud, says Vadim Bobylev at the Pulkovo Astronomical Observatory in St. Petersburg.
He added that, “Considering the fact that the comet shower would reach big planets some 0.5 to 1 million years after the passing of GL 710, the effect of the passage would not be catastrophic, and will happen over a very long period.”
The prediction is based on analysis of data from the European Space Agency’s Hipparcos astrometric spacecraft, which measured velocities of almost 120,000 stars in the early 1990s, as well as some recent data.
Bobylev analyzed the measured movements of about 35,000 stars in our neighborhood in the time interval from 2 million years in the past to 2 million years in the future. It resulted in adding nine new stars to the list of those which experience close encounters with the Solar system – either in the past or in the future, he reports in a paper published on arXiv.org website.
GL 710 was already known to have a scheduled rendezvous with us. However, Bobylev’s analysis indicates a high chance of passing closer than expected. It even has one chance in 1,000 of approaching close enough to significantly affect objects within the Kuiper Belt, i.e. planets, moons and asteroids. This could be bad news for our descendants.