The announcement of a possible large ninth planet in our Solar System way beyond Neptune last month caused a lot of excitement, needless to say. If confirmed, it may be similar to “super-Earth” type exoplanets which have been found to be plentiful around other stars, although none, that we knew of, around ours. At this point, however, it is still a well-presented theory. Now, there’s another possibility which has been offered to explain the weird orbits of some of the small Kuiper Belt objects – not a large planet, but rather a second Kuiper Belt consisting of many smaller objects instead.
After having completed a wildly successful flyby of Pluto and its moons, the New Horizons spacecraft was given a new target, much farther out in the Kuiper Belt, a smaller space rock called 2014 MU69. Starting on Oct. 22, New Horizons was instructed to perform the first of four targeting maneuvers, which would be needed to guide the spacecraft toward its destination. Now, the fourth maneuver has been successfully completed, putting New Horizons firmly on the path for a January 2019 rendezvous with 2014 MU69.
After having completed its successful encounter with Pluto and its moons last July, the New Horizons spacecraft is now setting its sights on its next target much farther out in the Kuiper Belt: a tiny rocky world called 2014 MU69, which is less than 30 miles in diameter and orbits nearly 1 billion miles past Pluto, in the far outer reaches of the Solar System.
It has been three months since the historic close flyby of Pluto by New Horizons, and new discoveries have been coming in quickly about this previously little-known world. The first paper detailing these results so far, “The Pluto System: Initial Results from its Exploration by New Horizons,” has now been published in Science. New Horizons has revealed Pluto and its moons to be more complex and geologically active than ever thought.
New images of Pluto from the New Horizons spacecraft were released last Thursday… and they are spectacular. The views across Pluto’s icy mountains and plains are haunting and almost surreal, yet familiar looking at the same time. What was once only a tiny pinpoint of light in the night sky is now a complex and fascinating world, in some ways similar to our own, seen close-up for the first time ever.