Monday, July 20, 2015

At the heart of the “heart” of Pluto, New Horizons has seen plains … – Sciences et Avenir

We waited Lovecraft. This will be the Snow Queen. The new images of the US probe New Horizons, which rose to 12,500 km of the dwarf planet Pluto July 14, 2015, reveals huge frozen plains. Located in the heart-shaped area of ​​the former ninth planet in the solar system – and named by NASA “Tombaugh region”, named after the American astronomer who discovered Pluto in 1930 – this rink XXL intrigue engineers and technicians the US space agency. “This is not an easy area to decipher” confirmed scientific Jeffrey Moore of the New Horizons mission. “We do not see recent impact craters and the surface of this area (probably) less than 100 million years. It is probably still being shaped by geological processes” . Nasa’s teams had found that Pluto has frozen mountains 3,500 meters high. Relatively young – at least at the scale of the solar system – these reliefs show that the dwarf planet could be geologically active. On another topic, the researchers found that the atmosphere of Pluto, formed mainly of nitrogen, escapes the dwarf planet, because of its low gravity, at a fairly significant rate “approximately 500 tonnes h “, according to the scientific Fran Bagenal … As for the probe itself, New Horizons is now at 3.5 million kilometers from Pluto, continuing his journey beyond the star that it will have that cross. The historic passage of the New Horizons probe to the dwarf planet Pluto was marked by the publication of the article “Pluto finally unveiled” by Jacques-Olivier Baruch, in Sciences et Avenir 812 (dated July 2015, see the box at the bottom of this page)

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