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In the Kingdom of Pluto rare small objects



The distant kingdom of Pluto is the haven for pristine, primary relics of the early solar system, offering new research.

The researchers noted the clear lack of small craters in Pluto and its largest moon, Charon, indicating that the smaller bones of the body increase through the belt Kuiper – a ring of cold bodies outside Neptune than previously thought. This information, in turn, indicates that the collision is a rare occurrence and that most Kuiper belt objects (CCDs) have avoided significant crashes in the eras, said team members

.

Listed: Pluto's mission: NASA's new horizons mission in pictures

Researchers led by Kelsey Singer of the Southwestern Research Institute (SwRI) in Boulder, Colorado photos captured by NASA's New Horizons spacecraft during its epic July 201

5 Pluto .

They counted and characterized the craters on a dwarf planet and Charon paying particular attention to the smooth, ancient plain of Charon known as the Volcanian Planinia. There, the peculiarities of influence are very noticeable and, apparently, well preserved for a long time. The size of the craters, of course, is proportional to the size of the drummer, so the team was able to match the size distribution to small CCD bodies that were too weak to be seen by telescopes on Earth or on Earth's orbit.

] "It is impossible to obtain this information without sending the probe into the external solar system," said the speaker, a member of the New Horizons group, Space.com.

She and her colleagues found surprisingly few craters less than 8 miles (13 kilometers), indicating a pronounced CCD deficit in the range of sizes from 0.6 miles to 1.2 miles (from 1 to 2 kilometers).

This shortage also stems from a small number of minor impacts on the Ultima Thule, a 21-mile wide (34 km), which New Horizons has increased on January 1st. The most distant planetary meeting in the history of space flight is the central part of the expanded Mission of New Horizons, which runs through 2021.

These dual-source results are contrary to models based on the situation in the inner solar system. Small bodies are relatively common in the neck of the forest of the Earth. Astronomers see some of these creeps in the main asteroid belt between Mars and Jupiter, and the Moon of Earth saves numerous craters, blown up by little drummers.

But it is becoming increasingly clear that the Kuiper belt is completely different from the asteroid belt, Singer said. Therefore, one should not be surprised if the population of the Kuiper belt is not in a "collisional equilibrium", because the asteroid belt is detected and instead of the heavily time capsules that scientists can explore to find out about the early days of the solar system. However, Singer – and many other researchers – would like to draw attention to another BWC to help understand our innate understanding of this dark and mysterious region.

"To see any other surface in the Kuiper belt, it would be strange," Singer said.

New horizons could do this. The spacecraft is in good health and has enough fuel to perform the flight of the third object if NASA provides one more mission expansion, said team members.

A new article is published on the Internet today (February 1). in the journal Science .

The book of Mike Wall's search for another's life Out There (Grand Central Publishing, 2018; illustrated ) by Karl Tate ) is not yet available. Follow it on Twitter @michaeldwall . Follow us on Twitter @Spacedotcom and on Facebook .


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