根据第一段“ An experiment on the Tiangong space station can provide the answer. Chinese astronauts have successfully grown rice in space. This makes it possible for astronauts to grow food to support long-term space stays.”可知,天宫空间站上的科学实验的 特殊之处在于它可以为太空旅行提供足够的...
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 ...
Modern Space Suit: EMU Modern Space Suit: Upper Torso Putting on a Spacesuit What a Space Suit Does Astronauts training in water for a spacewalk to build the International Space Station Photo courtesy NASA By creating an Earth-like environment within the suit itself, space suits allow ...
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...
"It is likely that before any prominent human presence occurs on the moon, significant mass will need to be launched and delivered to the lunar surface," Jehn told Space.com. "We need professionals from all industry areas to collaborate to produce successful and well-performing lunar infrastructu...
But growing rice in orbit is a different challenge because of the harsh conditions of space. Micro-gravity(微重力),lack of air and high-energy cosmic rays(宇宙射线) may make the plants difficult to grow.Rice has been a staple food (主食) for astronauts for a long time. US astronauts ...
to space. But growing rice in orbit (轨道) is a different challenge due to the hard conditions in space. Micro-gravity, no air and high-energy cosmic rays (宇宙射线) may make it hard for the plants to ...
Geminid meteors are bright and "intensely colored," according to AMS, although they aren't likely to produce long trails. These meteors are also visible in the southern hemisphere but at reduced rates. December: Ursids TheUrsid meteor showeris active between Dec. 13-24 and will next peak ove...
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Sleepon an incline.If acoldor an allergy is the cause of your cough, try raising your head. When you lie flat, the mucus can pool and irritate your throat. To put gravity on your side, use an extra pillow or raise the head of your bed with a stable surface, such as books. ...