This is a clip from an 3 hour presentation made by Mr. Keshe on october 8. 2015, called the 82nd Knowledge Seekers Workshop. Links below.

Follow the link to watch the full presentation:

He begins speaking about the second sun around 31:40 minute mark:

https://youtu.be/XvWOzUvoUqo?t=31m40s

Short summary:
He talks about how the second sun, the earths twin sister has arrived in our horizon and that we have 2 to 30 years till the planets demise. He also states that the second sun is arriving as a galactic cloud.

What do you think about what he says?