NEW YORK (CBS 2) — Did you see it? Chopper 2 HD sure did. It was a bizarre, glowing red-hot streak in the sky — right at sunset Wednesday — moving briskly behind the Manhattan skyline. CBS 2 reached out to a top astronomer who looked at the video. He said it looks beautiful, but that is was like nothing more than what’s known as a “contrail” — condensation from a commercial or military jet. The aliens, apparently, are not coming.