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【科学新闻】揭开太阳系起源的谜团 Unravel the mystery of the origin of the solar system

来源:慢速英语   时间:2020-01-11 15:51:54

A Japanese spacecraft arrived at an asteroid Wednesday after traveling for more than three years.


一艘日本宇宙飞船在飞行了三年多后于周三抵达一颗小行星。


The Hayabusa2 spacecraft is to perform a new experiment.It will create a crater on the asteroid's surface collecting pieces of rock to bring back to Earth.


Hayabusa2号宇宙飞船将进行一项新的实验。它将在小行星表面形成一个陨石坑,收集岩石碎片带回地球。


Japan Aerospace Exploration Agency(JAXA)said the Hayabusa2 is about 20 kilometers from the asteroid which is orbiting the sun 280 million kilometers from Earth.


日本宇宙航空研究开发机构(JAXA)表示,Hayabusa2距绕太阳运行的小行星约20公里,距地球2.8亿公里。


Over the next year and a half,the robotic explorer will attempt three short landings to gather rocks.If they are successful,the asteroid material could provide information about the beginning of the solar system and possibly life on Earth.


在接下来的一年半时间里,这个机器人探险家将尝试三次短时间的着陆来收集岩石。如果他们成功了,小行星物质可以提供关于太阳系开始的信息,可能还有地球上的生命。


Space officials say however that the mission will be difficult.


不过,航天官员说,这次任务将很困难。

Hayabusa2 will spend about two months looking for safe landing places on the rough surface.Because of the high surface temperature,it will stay for only a few seconds each time it lands.Any rocks it collects would be sent back in a re-entry container expected to arrive at the end of 2020.


Hayabusa2号将花费大约两个月的时间在崎岖的地面上寻找安全的着陆地点。由于地表温度很高,每次降落只会停留几秒钟。它收集的任何岩石都将装在预计2020年底抵达的重返大气层集装箱中运回。


The asteroid is named Ryugu after an undersea palace in a Japanese folktale.Ryugu is about 900 meters wide.


这颗小行星以日本民间传说中的海底宫殿命名为琉球。琉球大约900米宽。


In photographs released by JAXA,the Japanese space agency,the asteroid appears to be more square-shaped than round.A number of large craters can be seen.Project Manager Yuichi Tsuda described the asteroid in an online post.He said the rough surface will make choosing landing places"both interesting and difficult."


在日本宇宙航空研究开发机构JAXA公布的照片中,这颗小行星的形状似乎更为方形,而不是圆形。可以看到许多大的陨石坑。项目经理津田裕一(Yuichi Tsuda)在一篇在线文章中描述了这颗小行星。他说,粗糙的地面将使选择着陆地点“既有趣又困难”


The first landing is planned for September or October.The final landing is planned for April or May.Before the final landing,Hayabusa2 will send out a device that will explode above the asteroid.It will shoot a two-kilogram copper object into the asteroid at high speed to create a crater.


首次登陆计划在9月或10月。最后的着陆计划在四月或五月。在最终着陆之前,Hayabusa2将发射一个装置,在小行星上方爆炸。它将以高速将一个两公斤重的铜物体射入小行星,形成一个陨石坑。


Hayabusa2 will reposition itself on the other side of the asteroid to protect itself during the operation.


Hayabusa2将在小行星的另一侧重新定位,以在运行期间保护自己。


It will take another two to three weeks to make sure any wreckage that could damage the explorer has cleared.Hayabusa2 will then attempt to land at or near the crater to collect underground or surface material that was blown out by the explosion.


再过两到三个星期,才能确认任何可能损坏探险者的残骸已经清除。然后,Hayabusa2将试图降落在火山口或附近,以收集被爆炸吹出的地下或地表物质。


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