B.Space radiation might raise the risk of health problems for astronauts.C.Taking certain vitamins can help reduce pressure behind the eyes in space.D.Travel space is free of danger.(4)In the last paragraph,the writer implies(暗示) that C.A.Mars astronauts will be able to get things ...
But they won't be able to get things they need like astronauts on the space station do. Astronauts on the space station practice for this by growing lettuce and other food in space. Engineers are developing 3 D printing techniques which can allow future Mars astronauts to build tools as ...
AS ET comes home to the nation's cinema screens once again, romanticised notions of what's out there will abound as Elliott's relationship with the dumpy alien melts our hearts all over again.Daily Record (Glasgow, Scotland)
In space, however, there's a complete lack of molecules, which means there's also a complete lack of pressure. This is one of the major reasons it's dangerous for astronauts to go into space without a proper space suit. If you were to exit a spacecraft just wearing jeans and a T-s...
英语翻译It showed that it was quite safe for a man to be outside the spaceship for a certain period of time.But to walk in space,astronauts have to meet with many kinds of difficulties and dangers.这句话的意思
it can be very harmful to astronauts.Spacesuits also protect astronauts from radiation(辐射) in space.The suits even have parts to protect astronauts' eyes from the bright sunlight.The spacesuit includes several parts.The body equipment covers the astronaut's body.The arm equipment covers the arms...
so it would take astronauts at least six months to reach there.However. it only takes a few days to get to the moon.While space travel is never free of danger, it takes a lot more health risks to travel in space for a long time. For one thing.staying in space for long periods ...
Astronauts in low-Earth orbit are protected in part by Earth's magnetic field, which deflects charged particles. Earth's atmosphere provides an additional buffer for most of the planet's surface. But that protection is not available in deep space, and the levels recorded by the RAD instrument...
The Apollo 11 mission that took Armstrong and his fellow astronauts to the moon was a landmark event, but space travel actually began many years before. Almost 30 years earlier, in 1942, the German V2 rocket was the first to reach the official boundary of space. A few years later, in...
[题目]A spacesuit is much more than a set of clothes astronauts wear on spacewalks. A full spacesuit is really a one-person spacecraft. The spacesuit protects the astronaut from the dangers of being outside in space.Spacesuits help astronauts in several