D. To introduce different types of rice seedlings. 3. What is special about the rice experiment being done on Tiangong? A. It’s the first rice experiment in space. B. The gravity on Earth will influence the growing of the rice. C. It’s the first experiment to try to produce rice ...
producedseedsandbringthembacktoEarthforfurtherstudies,Zhengadded.Sincethe 1980s,Chinahasbeentakingtheseedsofcropstospace.Butgrowingriceinorbit (轨道) is a differentchallengeduetothehardconditionsinspace.Micro-gravity,noairandhigh-energycosmicrays (宇宙射线) maymakeithardfortheplantstogrow.Ricehasbeen a ...
But growing rice in space is a different challenge because of the bad conditions of space.Micro - gravity, no enough air and high - energy space rays may make the plants difficult to grow.Rice has been a main food for astronauts for a long time. US astronauts on the Apollo 11the first...
When theres an earthquake, we need to run to the open space, and remember, when you get to the open space, put your hands on your head. When you are in school, you have to follow your teachers instructions. At home at school when you cant run out to the toilet, or squat under th...
Little to no gravity can affect how rooting materials function. Different rooting materials and soils are better than others when it comes to water and air distribution -- both key to successful plant growth. Out in space, grainy soils can cause water to scatter and fine soils can prevent air...
These high-energy particle accelerators only produce one or two picograms of antiprotons each year. A picogram is a trillionth of a gram. All of the antiprotons produced at CERN in one year would be enough to light a 100-watt electric light bulb for three seconds. It will take tons of...
space program (for more, see How the Space Race Worked). In these space station concepts, people lived and worked in outer space. Most of the stations were wheel-like structures that rotated to provide artificial gravity. Like any port, ships traveled to and from the station. The ships ...
For those who’ve attempted to grow food during space missions, they’ve faced many difficulties, including the absence of gravity, and a lack of soil, air and humidity (湿度). However, as Shane Topham, an engineer with Space Dynamics Laboratory at Utah State University in the US, told NA...
It's launch time for the first privately funded space flight. In the course of battle for the X Prize, a group called Scaled Composites has built and tested SpaceShipOne, a sub-orbital spacecraft intended to carry tourists on the ride of their life. Lear
As we explored on the last two pages, flaps and slats enable a pilot to move an aircraft through three-dimensional space. In other words, the pilot alters the plane's orientation around its own center of gravity, producing torque. Imagine this center of gravity as a fixed point in the mi...