If you went looking for a 【小题1】 (differ) planet, from Earth as you could find, you wouldn't have to go all that far, at least in space terms. Just look to 【小题2】 fifth planet in our, solar system, Jupiter. This gas giant has no solid surface. Its diameter (直径) is more than 11 times as great as Earth's. Its mass is more than twice than 【小题3】 of all the other planets in. the solar system combined. Jupiter's atmosphere is covered with bands of clouds and filled with vast 【小题4】 (spin) storms. The most famous of these is the Great Red Spot, 【小题5】 is so big that Earth could fit inside it.

Jupiter is also a planet full of 【小题6】(puzzle). Those thick bands of clouds hide. what is happening inside the planet. Is there water? How much? Does Jupiter have a solid center? And then there's the question of just what 【小题7】 (drive) those monster storms.

Nine spacecrafts 【小题8】 (send) to study Jupiter by now. The most recent was Juno, which arrived at the planet in July 2016. It will orbit this gas giant at least until July 2021. When the spacecraft 【小题9】 (final) retires, its Earth-bound pilots will send it on a path to dive to its 【小题10】 (dead) into the Jupiter's atmosphere.

Beijing — Planetary scientists in China found hints of water “reservoirs (水库)” on the moon. Over billions of years, the surface of the moon 【小题1】(hit) by space rocks, causing the soil 【小题2】(melt) and be ejected (喷射) into space. Then it is cooled down and falls back to the lunar surface, 【小题3】(form) beads (珠子) of glass. The Chang’e 5 probe, 【小题4】 returned to Earth on Dec 17, 2020, brought back 【小题5】 total of 1,731 grams of rocks and soil from the lunar surface, including glass beads.

After looking into the glass beads from the sample, the international research team 【小题6】(find) that about one ton of glass beads may contain 0.5 kilograms of water. Hui Hejiu, one of the study authors said, “This ‘water’ wasn’t a liquid 【小题7】 instead took the form of hydrogen (氢气). The hydrogen 【小题8】(contain) in the glass beads can 【小题9】(easy) be turned into the water we can use.” If the water in the beads is easy to get, it will be a “really big deal” for deep space 【小题10】(explore) missions in the future.