The Tuesday story will be held on Tuesday when NASA's New Horizons test runs the icy world called Ultima Thule.
In the event of the 6.5 billion km (4.000 billion) of Earth, Flyby will establish a new remote exploration model for the Solar System of the nuclear space.
New Horizons will add images and other information to the nearest approach and close to a few hours.
This is 05:33 GMT.
At that moment, the Ultra surface will be around 3,500 km and will move to 14 km / h.
When they do their observations, they will return to the Earth-robotic artisan to download gigabytes of information stored in the memory.
The science mission scientists at the Johns Hopkins University Laboratory Laboratory, in Maryland, are in a control center.
"It's electric, it's ready for the whole team. We're in the game and we can not wait to explore," says New Horizons's senior researcher, Prof Alan Stern.
The test is known as the first visit to Pluton Nano Square in 2015. To reach the final, it must have a depth of 1.5 million km in space.
It's hardly a bit to know New Horizons next destination.
The telescopic measure indicates that it is about 20-30 kilometers away, although scientists can really differentiate between two entities, although they are very close to each other, even though they are touched. The next day they will be.
Ultima is the name of the Kuiper belt, far away from the sun and away from far-off and far-off material from eight large planets. Probably hundreds of thousands are members of the Kuiper, like Ultima, and in a good state there are certainly traces of the conditions of the formation of the solar system 4,600 million years ago.
"One day, we will turn on all our tools," said Dr. Kelsi Singer's scientific mission. "We will take black and white images, we will take colored images and take compositional information … This new object is like that, we have never had such an object, I am surprised by what we can find but what we can find."
Why is New Horizons visiting Ultima Thule?
Nasa wanted to explore beyond Pluton and that was objective.
Of course four years ago Hubble discovered the telescope.
It was first cataloged as MU69 (486958), after adding a nickname to Ultima Thule (Talk: Tool) after a public inquiry.
It is a Latin phrase that means something like "a place outside the world".
As a large-sized Kuiper belt objects, it is likely that larger pieces of ice, dust and perhaps even sunrise at the dawn of the solar system might be.
The theory suggests that the body will take a long shape or a lobate. Think potatoes or peanuts.
The remote telescopic locations said that the surface was very dark and with a little red ink. This darkness (which only reflects about 10% of the falling light on the surface) is the result of high energy radiation resulting from radiation: cosmic rays and radioactive beams.
New Horizons will explore the latest shape, rotation, composition and environment.
Scientists want to know how to build these far-off worlds. The only idea is that they were large breeding ground beans.
What can we expect from flyby?
Do not blink, you can lose it. Unlike Pluto in July 2015, there are no images about miracle-solving images. Eventually Blob will be visible to the last hours of flyby.
However, the probe and Ultima (3,500km versus 12,500km of the planet's dwarf planetarium much reduced) mean that the surface will see a finer detail. Functions with less than 33 millimeters can be distinguished by pointing out the cameras.
Because New Horizons needs to turn on its tools, it can not keep its antenna locked in the ground while it collects data.
The drivers, therefore, wait one year later to update their status of "home phone" and link some of the options.
"Good, I'm Healthy and I Found a Gorge of Data," the message should be received by Nasa's major radio stations at 15:28 GMT.
What a great challenge is this flyby?
In other words, it is more difficult than Pluto's passage.
The viewfinder's goal is almost a hundred times smaller.
New Horizons will be closer to Pluto; that is, good for image detail; But if the signaling is deactivated, the probe would send empty space images.
And that is really the main concern. Ultima was discovered four years ago, since the position and movement in the sky are much more challenging than the Pluton coordinates.
In this approach, images used to improve navigation and timing models that are critical for the New Horizons control are used.
And, remember, all of the Earth's 6.62 million km distance (4.11 billion billion).
In this distribution, the radio signals go by six hours and eight hours to get home.
In addition, data rates are glaciers of 1,000 bits per second.
On Tuesday, it will be late when the images of a few selections are downloaded as soon as possible, and will be September 2020 with the latest scrapbooking data from New Horizons.
BBC's Sky At Night program will be broadcasting on Sunday, January 13, BBC Four at 10:30 GMT. The presenter Chris Lintott will review the event and discuss some new science generations that will bring together meetings in the New Horizons group.