Alan, chief scientist of the new horizons of Tencent space dialogue, ·, Stern aptana studio

Dialogue space Tencent New Horizons chief scientist Alan · Stern data figure: NASA’s new horizons project chief scientist Alan · Stern (Alan Stern) – space Tencent (Guilin) on November 5th, NASA’s new horizons project chief scientist Alan · Stern (Alan Stern), the Tencent WE conference interview the acceptance of the Tencent space reporter’s question, following the question and answer related content. Although the first born, Triton (left) and Pluto (right) as a member of the Kuiper belt, but after billions of years of their evolution, two planets have different features. One problem: in the new horizons Pluto arrived in front of many people, including scientists, and the other is that Pluto should be a Neptune is captured Kuiper belt object "Triton" (Triton) is very similar. But in fact, after the new horizons Pluto was revealed, we found that these two cold objects vary greatly, do you think the cause of their huge difference? Alan ·: Stern: Thank you very much. It’s a very good question. That is, regardless of its size or density, are very similar to Pluto, it was born in the early formation of kuiper. In 1989, Voyager Two flyby of Neptune and its largest moon Triton moment, we found that Triton spectacular ice volcanos and complex surface structure. So we thought earlier belong to the Kuiper Belt objects should be similar to pluto. But in the new horizons arrived, we found that Pluto and Triton have great differences. For example, Pluto’s surface contains a variety of geological conditions of different types, and Pluto has five satellites, this is not the moon. Triton and Pluto evolved along different directions in different types can be said after the birth, on behalf of the Kuiper belt, which helps scientists on the Kuiper Belt objects classified as Pluto and Triton of these two categories. New horizons flyby of the Kuiper belt asteroid 2014 MU69 figure artistic imagination two: New Horizons in January 2019 will visit another Kuiper belt object "2014 MU69", when the new horizons from the nearest celestial bodies is how much? How much do we know about "2014 MU69"? Alan ·: Stern: until 2014, we have not yet confirmed that the new horizons will be the next target after pluto. We don’t know much about 2014MU69 at the moment, but we know it’s far away, even 1 billion 500 million kilometers farther than pluto. And its size is very small, it should be a block of material Kuiper belt object residue. In January 2019, when the new horizons flying 2014 MU69, the nearest distance will only be between 3000 and 10000 km. This is the new horizons Pluto distance nearest distance 12500 km closer, then we will have the opportunity to obtain data and pictures higher than Pluto precision, and create a new record for most human detector visited distant objects, after this record sheet by Brigade相关的主题文章: