Nasa spaceship zooms toward farthest world ever phtographed

TAMPA: A Nasa spaceship is zooming toward the farthest, and quite possibly the oldest, cosmic body ever photographed by humankind, a tiny, distant world called Ultima Thule some four billion miles away.

The US space agency will ring in the New Year with a live online broadcast to mark historic flyby of the mysterious object in a dark and frigid region of space known as the Kuiper Belt at 12:33 am January 1 (0533 GMT Tuesday).

A guitar anthem recorded by legendary Queen guitarist Brian May -- who also holds an advanced degree in astrophysics -- will be released just after midnight to accompany a video simulation of the flyby, as Nasa commentators describe the close pass on www.nasa.gov/nasalive.

Real-time video of the actual flyby is impossible, since it takes more six hours for a signal sent from Earth to reach the spaceship, named New Horizons, and another six hours for the response to arrive.

But if all goes well, the first images should be in hand by the end of New Year´s Day.

And judging by the latest tweet from Alan Stern, the lead scientist on the New Horizons mission, the excitement among team members is palpable.

"It´s happening!! Flyby is upon us! @NewHorizons2015 is healthy and on course! The farthest exploration of worlds in history!" he wrote on Saturday.

Scientists are not sure what Ultima Thule (pronounced TOO-lee) looks like -- whether it is round or oblong or even if it is a single object or a cluster.