Yep, those little streaks are believed to be an alien craft saving the Russians from a meteor that blew up with the force of 30 Hiroshima blasts. Here is a video of the event.
Apparently there are other videos of the comet that show this anomaly, but I can not actually see it. Here is a collage video of the event.
Another interesting theory is that the meteor itself was an alien mothership and that Russian missiles are what blew it out of the sky. Even if this one really is UFO related I really doubt we will ever figure it out considering how fast the meteor(or alien mothership) was moving.
Source: ovni-news.blogspot.com