” where it can land. Any little problem could bring big trouble.During the final landing, scientists... on the moon.Landing on the moon is a hard job. In fact, half of the spacecraft around the world couldn ……

is landing on the moon so hard?Why is landing on the moon so hard?● Getting into the moon’s orbit... it is near the moon’s orbit (轨道), it needs to slow down. Or, it may miss the “entrance (入口)” or crash onto ……

around us, and Mars is the latest place we're using machines to explore. Besides earth, the "red planet" is seen as the one place in oursolar system(太阳系) most likely to have life.Early last month ……

with its “child”, Philae, by crash-landing it on the comet on Sept 30.It sounds like a sad story... million kilometers from Earth. It took Rosetta 10 years to fly there. It then left a lander (着陆 ……

on the surface. And life would start to look like that on Earth, according to Aeon.com. On Mars... of Mars. But some bad dust storms make life there very difficult. The movie is set in the mid-2030s ……

. The botanist drives a rover (探测器) on the surface of Mars. And there are some bad dust storms that make life..., could people build airtight (密不透风的) homes on the surface. And life would start to look like what ……

. And life would start to look like that on Earth, according to Aeon.com. On Mars, people could grow... airtight (密不透风的) homes on the surface. And life would start to look like that on Earth, according to Aeon ……

energetic but indirect crash between Earth and a planet the size of Mars, which is about half Earth's size... have been sent into orbit around the Earth as a result of the crash.The indirect angle ……

to collect and bring back stones and soil from the moon’s far side for study on Earth.●  It will be the first-ever probe to collect and bring back stones and soil from the moon’s far side ……

THRILLED by the successful landing of the rover on Mars, scientists from NASA (the US National... and working on getting it ready to roll.Spirit made a nerve-racking, but safe, landing on Mars on Sunday ……

organisms. Scientists have long been trying to figure out how life on Earth began. They believe that some of the essential ingredients needed for life arrived on Earth through rocks from space ……

. During the landing (着陆), cameras took pictures of the surface (表面) and sent them back to Earth...;During the landing (着陆), cameras took pictures of the surface (表面) and sent them back to Earth ……

and satellite crashed into the moon on October 9, and it was no accident. NASA planned the crash landing. Scientists are hoping to find out if there's water there . A crash will help tell them.The Lunar ……

, is coming up. It will land a rover (月球车) to collect soil samples and bring them back to Earth... journey around Earth in the Shenzhou V spacecraft.Since then, China has conducted six manned ……

to Earth’s gravity (重力). Keeping seatedThe astronauts felt good after landing... came back to Earth from the Tiangong space station. There are many interesting facts about ……