A. some things can be fixed by astronauts during spacewalks B. all experiments must be placed on the outside of a spacecraft C. an astronaut can get out of a spacecraft any time while in space (2)Why does an astronaut wear spacesuits on spacewalks? ( ) A. It keeps an astronaut ...
Diapers: What Keeps Babies and Astronauts from Springing a Leak?Science BuddiesMegan Arnett
(2)C .细节理解题.根据第二段中When astro nauts go on spacewalks , they wear spacesuits to keep themselves safe . Inside spacesuits , astronauts have the orygen () they nee d to breathe and the water they need to drin k.可知当宇航员进行太空行走时,他们会穿上宇 航服来保证自己的安全....
A planet does not have to have a moon to be a planet. Pluto has numerous moons but is not a planet in the same sense as Earth. Also, Mercury has no moons but is a fully-fledged planet like Earth. All the gas planets, including Jupiter and Neptune, have rings of dust. Jupiter's ...
Inside spacesuits, astronauts have the oxygen they need to breathe and the water they need to drink. To keep the astronauts and the spacecraft safe, the astronauts must leave and go back to the spacecraft through a special door. When on a spacewalk, astronauts use safety tethers to stay ...
Another way astronauts stay safe during spacewalks is by wearing a SAFER. SAFER is worn like a backpack. It helps an astronaut move around in space.How do astronauts train for spacewalks? One way is by going for a swim. Floating in space is a lot like floating in water. Astronauts ...
the suit’s exterior may feel more like high-performance sportswear than traditional space armor. But make no mistake—this is gear built to survive the extreme cold and searing heat of the Moon’s surface, with every detail engineered to keep astronauts safe and fu...
When astronauts go on spacewalks,they wear spacesuits to keep themselves safe.Inside spacesuits,astronauts have the oxygen they need to breathe and the water they need to drink.To keep the astronauts and the spacecraft...
missions. But the Atlas V is being phased out. It will be replaced by the ULA’s Vulcan Centaur, a partially reusable rocket that has made only one test flight so far. Plus, the Starliner capsule has serious issues that have left two NASA astronautsstuck at the ISS, potentially until ...
— NASA's Orion capsule, which the agency is developing to help get astronauts to Mars and other destinations in deep space, aced its first flight test on Dec. 5, 2014. During that unmanned mission, known as Exploration Flight Test-1 (EFT-1), Orion orbited Earth twice and then came ...