space back to Earth, said Xinhua. The first *demo of quantum key distribution took place in the 1990s ……

in the United Arab Emirates. Space Adventures said that it is developing rocket ships for suborbital flights, which take passengers on short trips into space and then back to earth without circling ……

is 52 years old. He is an American astronaut (宇航员). He spent 340 days in space and came back to Earth early this month. While in space, he grew plants, did experiments (实验) and took many photos ……

in a chair after coming back to Earth in the Russian Soyuz MS-25 space capsule (太空舱). He and another Russian... in a chair after coming back to Earth in the Russian Soyuz MS-25 space capsule (太空舱). He and another ……

Space robot首个太空机器人进入国际空间站。THE first space robot (太空机器人) *is ready to go to outer space. Its name is R2. R2 is going to finish tests in the International Space Station. It will never come back ……

  Back home:Crew members of the Shenzhou XII mission returned to Earth on Sept 17...-entry capsule in Inner Mongolia autonomous region. They had worked in the space station core module ……

while in orbit. It will send data back to space headquarters (总部) on Earth via a long-distance transmission (传送) system. After its work is done, Yinghuo-1 will not return to Earth.Back in 1962 ……

and reflect it back to the Earth. This greenhouse effect raises the Earth's temperatures. Human activity.... These gases in turn send more heat back to the Earth, causing a further increase in temperatures ……

首个太空机器人进入国际空间站。 THE first space robot (太空机器人) is ready to go to outer space. Its name is R2. R2 is going to finish tests in the International Space Station. It will never come back to Earth. R2 ……

will happen when the space lab falls back to Earth. Will it do any harm? Tiangong I has been... into space in 2011. It completed its mission (任务) in 2016. The lab is still orbiting (环绕) Earth at an ……

. Solid waste is sucked by fans into the commode and later brought back to earth. The urine is released...ASTRONAUTS aboard the NASA space shuttle Discovery carried an extra piece of cargo when ……

实验室). Scientists sent it into space in 2011. It finished its job this year. The lab came back to Earth. It fell...). It is as big as a school bus. It came back by passing through the Earth’s atmosphere (大气层). Most ……

来自地球的客人Space welcomed more than 500 human guests1 from the Earth in total (一共) up until now... Union (前苏联). Vostok (东方号载人飞船) carried him into space. When Gagarin came back from space, he became ……

来自地球的客人Space welcomed more than 500 human guests1 from the Earth in total (一共) up until now... Union (前苏联). Vostok (东方号载人飞船) carried him into space. When Gagarin came back from space, he became ……

来自地球的客人Space welcomed more than 500 human guests1 from the Earth in total (一共) up until now... Union (前苏联). Vostok (东方号载人飞船) carried him into space. When Gagarin came back from space, he became ……