, Li boa▓rded a slow train and chatted with migrant w

oon - never visible from Earth - ▓has waited billions of years to see the first-ever soft landing of a visitor▓ from Earth.After orbiting the moon for more than 20 days, the Chang'e-4 probe, l▓aunched from the Xichang Satellite Launch Center in▓ southwest China on Dec. 8, 2018, has seen coun

wages on time. He calle

image

tles▓s craters, mountains and valleys on the moon.Finally, its destination on the far side, th▓e South Pole-Aitken (SPA) Basin, the largest, deepest and▓ oldest crater in the solar system, was illuminated by the rising sun.The developers of Chang'e-4 decided on Thursday it was the time to come down on this barren world▓.At 10:15 a.m., a variabl

e thrust engine was ignited with the assistance of the relay satell▓ite Queqiao (Magpie Bridge), operating in the halo orbit around the second Lagrangian (L2) point of the Earth-moon system, about 65,000 km from t▓he moon, whe

d for coordin?/h3> image

re it can see both Earth and the moon's far side.Chang'e-4's relative ve▓locity to the moon was lowered from 1.7 km p▓er second to close to zero, and the probe was adju▓sted to face the moon and descend vertically towards the Von Karman Crater in the SPA Basin.When it descended to an altitude of about 2 km, its cameras captured t▓he shadows of the hills and valleys on t▓he lunar surface. Its computer identified and as▓sessed large obstacles such as rocks and c▓raters, so the probe could avoid them.At 100 meter

  • 坅ted development of high-speed trains and inexpensive but slower trains to serve pass
  • engers with different demands.At a shanty town area, Li underscore
  • d the imp▓ortance of speeding up renovations in
  • order to make local residents live in warm and comfortable houses.Please scan the QR Co

de to follo▓w u

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s on InstagramPlease scan

s up, the probe hovered to identify smalle▓r obstacles and measured the slopes on the surface. Its computer calculated agai

image

the QR Code to fol▓lo

n and selected the safest sit▓e.At 2 meters above the surface, the engine stopped, a▓nd then the golden lander with a silver

w us on Wech

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