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来自小行星Bennu的惊喜 – 译学馆
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来自小行星Bennu的惊喜

Surprises from Asteroid Bennu

In late 2018, as NASA’s ORIRIS-REx spacecraft
2018年底 当美国宇航局的冥王号
neared its target venue,
临近目标地点时
the asteroid grew detail from a few tiny pixels
小行星从微小的像素点
to an incredibly high resolution image
变成了一幅分辨率极高的图像
ORIRIS-REx confirmed the asteroids basic shape,
冥王号证实了小行星的基本形状
which was originally observed in 1999
它最初是在1999年
by ground-based radar at Arecibo Oberservatory
由阿雷西博天文台的地基雷达观测到的
which scientists didn’t expect
科学家们没有预料到
was just how rough and boulder filled the asteroid would turn out to be.
它会变得这么的粗糙 满是巨石
While it can be difficult to fully grasp venues unfamiliar surface.
尽管照片很难让你完全了解陌生行星表面的情况
It’s helpful to understand the scale of what you’re seeing here.
但它能帮助你了解行星的规模
In this image, the brightest boulder is the length of a horse.
在这张图片中 最亮的圆石有马那么长
and the large boulder in this image is the width of a soccer field.
图中的大圆石是一个足球场的宽度
Another challenge for the mission
这次任务的另一个挑战
is the asteroids small size and weak gravity.
是小行星体积小 重力小
This mesns that ORIRIS-REx needs to fly daringly close to the surface
这意味着冥王号需要大胆地飞到离行星表面很近的地方
in order to enter into orbit.
以便进入轨道
With its orbital A phase,
在轨道A阶段
ORIRIS-REx successfully entered the closest ever orbit for a spacecraft
冥王号成功进入航天器有史以来最近的轨道
setting a Guinness world record in the process
创造了一项吉尼斯世界纪录
Then, six months later, it beat its own record during its orbital V phase.
六个月后 它在轨道V阶段打破了自己的记录
and approach to within a few hundred metres of the rocky surface
在离岩石表面几百米的范围内
Because ORIRIS-REx flew so closely over the surface during orbital beam,
由于冥王号在轨道束期间离地表非常近
the team was able to map the topography and shape of Bennu
科研团队能绘制出本努(小行星)的地形和形状
better than we have our own moon.
比月球的地图更好
In addition to mapping asteroid Bennu,
除了绘制小行星本努的地图
ORIRIS-REx plans to collect and return a sample back to earth.
冥王号计划收集样本并返回地球
To do that, this spacecraft will carefully tag the surface of Bennu.
为了做到这点 航天器将仔细标记本努的表面
The ORIRIS-REx team has selected four possible sites for the mission
科研团队为这次任务选择了四个可能地点
鱼鹰
翠鱼
夜莺

The spacecraft has been closely imaging these sites from the different angles,
航天器已经从不同角度把这些地点拍下来
just like the best touchdown spot for ORIRIS-REx.
就像冥王号的最佳触地点一样
What was originally envisioned as a smooth and easy touchdown on that new surface
最初设想的 在新表面上平稳轻松地着陆
has become a complex endeavor
已经变成一件复杂的事情
to tag a small crowded space on the asteroid,
去标记小行星上一个小而拥挤的空间
an area no longer than a few parking spots
一个只有停车位那么大的空间
by mid 2020
在2020年中期
the ORIRIS-REx team has already pushed the boundaries of scientific exploration
冥王号团队已经突破了科学探索的极限
going from the ground-based radar images
从地面雷达图像
all the way to being a few hundred meters from the asteroid surface.
一直到距离小行星表面几百米的地方
And is now mere months away from a sample collection attempt.
现在离样品收集尝试只有几个月的时间了

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OSIRIS-REx对于探测小行星Bennu有了新发现

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视频来源

https://www.youtube.com/watch?v=rhBaNTEzNHg

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