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NASA is about to "dawn" to open the second valley God exploration mission

via:博客园     time:2017/10/23 9:30:49     readed:652

According to foreign media theverge reported that in June 2016, Dawn Dawn (Dawn) & rdquo; detector completed its first mission of the valley god. Since then, the detector has been running on the orbit of the dwarf planet, where it continues its monitoring and research work. It seems that after a period of silence, the dawn is ready to go.

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Learned that NASA announced the second mission of the dawn this week, which will be closer to the largest dwarf planet in the solar system.

The dawn arrived in the valley of God in 2015, when it provided scientists with an unprecedented view of observing the largest object of the asteroid belt and has received many new discoveries.

For this new mission, the dawn flight team will let this probe fly into another track of the valley gods, until that time, the detector with the valley god star surface distance will not exceed 120 miles. And before the next, the dawn of the distance with the valley gods only 240 miles away. NASA said that in the second mission, they will use the detector's gamma-ray and neutron spectrometer to study the upper layer of the valley to see how much ice is above.

The mission will last until April 2018, when the valley gods are closest to the sun. Scientists hope to see if the sun will melt the ice above the stars, and if so it will form a thin, temporary atmosphere.

In addition, scientists will use the dawn of visible light and infrared spectrometer on the valley of God's mineral composition to study and will continue to shoot its surface visible light image.

The task planning team believes that the dawn will be able to stick to the end of 2018 and is different from the Cassini's, the dawn will not choose to fall into the observing planet atmosphere, but continue to run on the orbit of the valley The purpose is to avoid pollution of the dwarf planet's surface.

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