Is Our Sun Part of a Binary Star System?

[ptabor]

http://www.spacedaily.com/reports/Evidence_Mounts_For_Companion_Star_To_Our_Sun.html

the above article seems to suggest that we are part of a binary star system.
I thought (or rather assumed) that astronomers would have done a thorough scan of our neighborhood by now - so why hasn't anyone seen it (if it does indeed exist)?

 

[The Guru Kid]

Interesting.

I think this'll tell us more about the history of our solar system than discovering a new star that is part of our solar system.

 

[scott1]

You might want to read this thread I started about nemsis theory.
https://www.physicsforums.com/showthread.php?t=116898