Small meteorites have left impact craters all over the planet’s surface.
这个行星的表面布满了小块陨石留下的撞击坑。
Bright ejecta rays such as these are produced as impacts excavate and eject relatively unweathered subsurface material.
这些放射状陨石坑产生撞击溅出的地下物质，绵延在遍布陨石坑的水星表面数百公里。
He discovered an unusual meteorite.
他发现了一块奇异的陨石。
The metallographic cooling rate was measured for the Deng Ujimqin mesosiderite using And profile ac concentration vs.
采用剖面中间浓度与镍纹石带宽度系测定了东乌珠穆沁中铁陨石的金相冷却速率，其冷却速率介0。
A micrometeorite impact, a snag, a wayward tool or even a misstep can spell doom for an astronaut.
太空人只要给一颗微陨石撞上、给钩住、一个工具灵、甚至一，都可能万劫不复。
Some people have reported seeing more semivolatile elements in a class of interplanetary dust particles (IDPs) called “chondritic porous” IDPs.
曾有人报告在一类被称作“多孔球粒陨石”的行星尘埃颗粒（IDPs）中见到了较多的半挥发性元素。
Simply introduce the aerolith epigraph of Ming Jiajing, enumerate the lists of inscriptions and horizontal tablet of mosques in Datong area.
随后简单介绍了明嘉靖丙午陨石题记，列举了大同辖域清真寺碑刻匾联名单。
If you look over the element ratios we measured, you might conclude that our comet particles look more like chondritic porous IDPs than CI chondrite meteorites.
如果你查看我们测定的元素比率，你将得出结论——我们的彗星颗粒看上去更接近多孔球粒陨石IDPs而不是CI球粒陨石。
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No only here at Meteor Crater but anywhere in the Solar System.
不仅仅在个陨坑里太阳系所有的陨坑都如此。
This is one of the hallmarks of impact craters.
陨坑都有样的特点。
Meteoroids become meteors when they enter our atmosphere and meteorites when they hit the ground.
流星进入地球大气层时会变成流星，撞击地面时变成陨。
They've lived through the meteor that killed the dinosaurs.
它们见证过杀死恐龙的陨。
He reached this conclusion after studying a meteorite.
是他研究一块陨后达成的结论。
But the meteorite Peary took is still there.
但皮里带来的陨仍然在那里。
The site of a lake formed more than 3.5 billion years ago.
个陨坑形成于35亿年前。
Scientists believe it was just a meteor not a meteorite.
科学家认为只是一个流星，而不是陨。
That's when most of the highland cratering occurred.
那就是月陆陨坑的形成时期。
It blew out windows in more than 4,000 buildings.
陨爆炸造成4000多座建筑的玻璃爆裂。
The planet's gonna undergo this meteoric bombardment for, like, 5,000 years.
星球将遭受大概五千年的陨轰炸。
And in these meteorites there were from 60 to 80 amino acids.
在些陨中有60到80个氨基酸。
The young Earth was once completely covered by impact craters.
年轻的地球曾经完全被陨坑覆盖。
A hunt is underway for rocks from a large meteorite that was seen over parts of southern Norway.
一颗大型陨在挪威南部部分地区上空坠落后，人们开始寻找坠落的陨碎片。
Those remnants are known today as the Allende Meteorite.
些残余碎片在如今被称为艾伦德陨。
And the composition of that meteorite, is very consistent with the composition of Baptistina.
那个陨的成分，与巴蒂斯缇娜其实非常一致。
The meteorite itself went for $21,000.
陨本身拍出21000美元。
This crater hints at the size of the explosion in western Ghana.
个陨坑暗示了加纳西部爆炸的规模。
My surface is made of stone, covered in craters you see.
我的表面是头，被陨坑覆盖。
Flight MH17 did not crash as a result of meteor strikes.
马航MH17航班坠毁的因并不是因为陨撞击。
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撞击溅出的地下物质，绵延在遍布
系测定了东乌珠穆沁中铁
灵、甚至一
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