上周發射的長征5B产生的最大的一件太空垃圾将在周一以完全失控的方式墜落地球

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上周土共發射的長征5B搞出來的事情還沒完。
現在，一段30幾米長的火箭，應該是第二級，還在橢圓形低地球軌道上運行，預計周一再入大氣層。
這是幾十年以來最大的一件太空垃圾以完全失控的方式墜落地球。美國太空軍正在嚴密監視，以防不測。

https://spaceflightnow.com/2020/05/09/u-s-military-tracking-large-chinese-rocket-reentry/
U.S. military tracking unguided re-entry of large Chinese rocket

A Chinese rocket measuring around 100 feet long that launched earlier this month will likely plunge back into Earth’s atmosphere some time Monday, becoming the most massive object in decades to fall out of orbit in an uncontrolled manner.

The core stage of China’s Long March 5B rocket is expected to fall back to Earth unguided after nearly a week in orbit. The Long March 5B rocket launched May 5 with a prototype for a next-generation Chinese crew capsule.

As of Saturday, the rocket stage was circling Earth in an elliptical orbit ranging between 94 miles (152 kilometers) and 167 miles (270 kilometers) in altitude, according to U.S. military tracking data. A prediction issued Saturday by the U.S. military, which tracks objects in orbit, forecasts the rocket’s re-entry in a 24-hour period between 2335 GMT (7:35 p.m. EDT) Sunday and 2335 GMT (7:35 p.m. EDT) Monday.

But uncontrolled re-entries are difficult to predict, and the forecast could change as ground-based radars continue tracking the Long March 5B rocket body in orbit. Changes in atmospheric drag and solar activity could move the time of re-entry earlier or later.

A one-minute error in predicting the re-entry time changes the location of potential falling debris by nearly 300 miles, or about 500 kilometers, according to the Aerospace Corp.

The Long March 5B rocket body is in an orbit that flies between 41.1 degrees north and south latitude, meaning the re-entry could occur as far north as around New York City, or as far south as Wellington, New Zealand.

Maj. Cody Chiles, a Combined Force Space Component Command spokesperson, said Friday that the U.S. Space Force’s 18th Space Control Squadron is tracking the Chinese Long March 5B rocket body. The object is approximately 20 meters squared in size, Chiles said in response to an inquiry from Spaceflight Now.

The core stage of the Long March 5B rocket measures around 100 feet (30 meters) long and 16 feet (5 meters) wide.

This map illustrates some of the possible tracks the Long March 5B rocket body could take on Monday, the expected day of re-entry. An exact location of the re-entry cannot be predicted with certainty. Credit: Aerospace Corp.
During the May 5 launch, the core stage contained super-cold liquid hydrogen and liquid oxygen to feed the rocket’s two YF-77 engines. Four liquid-fueled boosters clustered around the core stage dropped off the rocket around three minutes after liftoff to call into the South China Sea.

With the tanks empty, the Long March 5B’s core stage stage has a mass of roughly 20 metric tons. An exact mass figure has not been released by Chinese officials.

That makes the Long March 5B core stage the most massive object to make an uncontrolled re-entry since the Soviet Union’s Salyut 7 space station in 1991, according to Jonathan McDowell, an astronomer at the Harvard-Smithsonian Center for Astrophysics who tracks global satellite and launch activity.

The core stage is more massive than other notable satellites that have plunged unguided back into Earth’s atmosphere in the last decade, such as China’s Tiangong 1 space lab, Russia’s failed Phobos-Grunt Mars probe, and NASA’s UARS atmospheric research satellite. It’s about one-quarter the mass of NASA’s Skylab space station, which made headlines when it fell to Earth over Australia in 1979.

Dead satellites and old rocket stages regularly re-enter the atmosphere, but re-entering objects with masses of more than a few tons are rare.

There have been no reported human injuries or deaths from falling space junk. NASA in 2011 calculated a 1-in-3,200 chance of someone being hit by debris from the UARS satellite, which was less than one-third the mass of the Long March 5B core stage. A casualty risk estimate for the Long March 5B was not available.

In 2016, an upper stage from a Chinese Long March 7 rocket — about one-third the mass and size of the Long March 5B core stage — streaked through the atmosphere over the Western United States. The re-entry was captured on video.

The Long March 5B rocket body is mostly comprised of hollow propellant tanks, and much of the rocket’s structure is expected to burn up during re-entry. But some pieces, such as denser parts of the rocket’s two main engines, could survive the fall to Earth and hit the ground.

A Long March 5B rocket lifts off from the Wenchang launch center May 5. Credit: CASC
Space agencies, launch operators and satellite companies often try to guide spent rocket stages and aging satellites toward re-entries over the ocean, reducing the risk that debris could fall over a populated area.

In the case of the Long March 5B, the core stage delivered its payload — a prototype Chinese crew capsule — into a low-altitude orbit. The heavy-lift Long March 5B is designed to directly inject payloads into low Earth orbit without an upper stage, meaning the core stage also ends up in orbit, instead of immediately falling back to Earth in a predetermined downrange drop zone.

China plans to launch at least three more Long March 5B rockets in 2021 and 2022 with modules for the country’s planned space station, so more uncontrolled rocket re-entries are expected in the next couple of years.

After the Tiangong 1 space lab re-entered the atmosphere unguided in 2018, China performed a controlled de-orbit of the follow-on Tiangong 2 spacecraft in 2019.

The most massive human-made object to re-enter the atmosphere from orbit was Russia’s Mir space station, which made a guided re-entry over the South Pacific Ocean in 2001. NASA and Russia’s space agency have plans to eventually execute a controlled re-entry of the International Space Station at the end of its service life.

要是掉落在中南坑就好玩了。

品葱用户 王莽谦恭未篡时 评论于 2020-05-11

中共目前越来越倒霉
我觉得这个没准也会出事

品葱用户 M36 评论于 2020-05-11

墙国应该还沉浸在发射成功的喜悦中 没了美国芯片就是一堆废铜烂铁

品葱用户 Acca0429 评论于 2020-05-12

要是砸到某個重要設施就gg了

品葱用户 tommy_lee 评论于 2020-05-12

なんてことだ冗談か?

品葱用户 hun 评论于 2020-05-11

務必砸到中南海，務必砸到中南海，務必砸到中南海🤞😠🤞

可是如果砸不到，大家周一擡著頭走路。真是有破壞沒建設

品葱用户 uckfU 评论于 2020-05-11

re-entry could occur as far north around New York City, or as far south as Wellington, New Zealand.—你肯定不是故意的？

品葱用户 三零一小护士 评论于 2020-05-11

瑟瑟发抖。疫情还没结束呢，再来一次切尔诺贝利么…

品葱用户 Knightstone 评论于 2020-05-11

結果最終太空垃圾墜落到悉尼， 第二次不列顛作戰正式開始(゜皿。)

土共的國旗顏色是紅色的， 自護的國旗也是紅色的。 因此土共是自護說成立(゜皿。)

品葱用户 **Hermione

uckfU** 评论于 2020-05-11

[

re-entry could occur as far north around New York …

](https://pincong.rocks/article/item_id-374116# “https://pincong.rocks/article/item_id-374116#")

意即超過8成的城市有機會被砸，繼武肺後CCP再向世界宣戰。

品葱用户 pcfun 评论于 2020-05-11

快转些国内新闻，真是笑死我了。好不容易弄上去一个，结果真的是🤣

品葱用户 **北美carl

Knightstone** 评论于 2020-05-12

[

結果最終太空垃圾墜落到悉尼， 第二次不列顛作戰正式開始(゜皿。)土共的國旗顏色是紅色的， 自護的國旗…

](https://pincong.rocks/article/item_id-374130# “https://pincong.rocks/article/item_id-374130#")
血色5月 澳洲：怎么tm老是我

品葱用户 **隼龙

Knightstone** 评论于 2020-05-11

[

結果最終太空垃圾墜落到悉尼， 第二次不列顛作戰正式開始(゜皿。)土共的國旗顏色是紅色的， 自護的國旗…

](https://pincong.rocks/article/item_id-374130# “https://pincong.rocks/article/item_id-374130#")
杂种书记还真的是汤金，虽然当上了一尊，但国内情形好似附骨之蛆，一尊也快没了。等下就是大基，义刚和姬施互相夺权。

品葱用户 xhblxyz081 评论于 2020-05-12

这么没有公德心，用掉的二级正常要么进入墓地轨道要么自己受控坠毁，中国这又不知道出了什么幺蛾子

品葱用户 grantyang 评论于 2020-05-12

这个作孽多端的土匪中国共产党中华人民共和国流氓团子每一个下贱胡闹都给人类世界带来无穷灾难，不消灭这个混账团伙人类永无安宁

品葱用户 **油膩的天堂

hun** 评论于 2020-05-12

[

務必砸到中南海，務必砸到中南海，務必砸到中南海🤞😠🤞可是如果砸不到，大家周一擡著頭走路。真是有…

](https://pincong.rocks/article/item_id-374115# “https://pincong.rocks/article/item_id-374115#")
真的砸那邊應該也是來得及用飛彈炸碎？

品葱用户 **三零一小护士

xhblxyz081** 评论于 2020-05-11

[

这么没有公德心，用掉的二级正常要么进入墓地轨道要么自己受控坠毁，中国这又不知道出了什么幺蛾子

](https://pincong.rocks/article/item_id-374158# “https://pincong.rocks/article/item_id-374158#")
因为坏了。我不懂具体的技术，只记得长五b还在天上的时候国内有零星报道说有个设备失灵了。但那个消息都被后来火箭顺利回收给掩盖，没有人注意了

品葱用户 **hun

油膩的天堂** 评论于 2020-05-11

[

真的砸那邊應該也是來得及用飛彈炸碎？

](https://pincong.rocks/article/item_id-374179# “https://pincong.rocks/article/item_id-374179#")
所以全世界的衛星監測一致注意著中國的破銅爛鐵在哪兒自由落體？ XD
中國輸出的每一個亂子都引起全世界的關注

品葱用户 cjmtsi 评论于 2020-05-12

我的娘啊，这是说指不定哪天砸谁脑袋上么？真是瓦房店产品，不光害别人，对自己也毫不手软

品葱用户 nmff 评论于 2020-05-11

瓦房店卫星频繁出事只是开始，以后还会越来越多。实际上航天是中国最好的一块了，只是因为要求更高而且曝光率高才显得好像出事频繁。航空和船舶更差劲，瓦房店周期开始之后各种航空和船舶领域的事故可能更让人大跌眼镜。

品葱用户 我就獨 评论于 2020-05-11

要是掉到上海就麻煩了，因為不知道長征5B屬於哪一類垃圾

品葱用户 **小嘴抹蜜刁包子

北美carl** 评论于 2020-05-12

[quote][/quote]
话说您佬的动态还能打开吗，我最近的动态一直卡壳

品葱用户 **华国锋

我就獨** 评论于 2020-05-11

[

要是掉到上海就麻煩了，因為不知道長征5B屬於哪一類垃圾

](https://pincong.rocks/article/item_id-374232# “https://pincong.rocks/article/item_id-374232#")

哈哈哈哈哈哈哈

品葱用户 Childhoodagain 评论于 2020-05-12

沒有給全球人類帶來什麼好處，一直製造問題，真服了他們這幫土匪

品葱用户 **Knightstone

北美carl** 评论于 2020-05-12

[

血色5月 澳洲：怎么tm老是我

](https://pincong.rocks/article/item_id-374148# “https://pincong.rocks/article/item_id-374148#")
第一次不列顛作戰:2020年高清重製版w

品葱用户 **北美carl

小嘴抹蜜刁包子** 评论于 2020-05-11

[

话说您佬的动态还能打开吗，我最近的动态一直卡壳

](https://pincong.rocks/article/item_id-374253# “https://pincong.rocks/article/item_id-374253#")
在转圈圈

品葱用户 戈培爾同志 评论于 2020-05-11

随 机 杀 人

品葱用户 **PaperPlane

戈培爾同志** 评论于 2020-05-12

[

随 机 杀 人

](https://pincong.rocks/article/item_id-374311# “https://pincong.rocks/article/item_id-374311#")無 差 別 襲 擊

品葱用户 staff 评论于 2020-05-11

它们以前在太原，酒泉发射卫星，每次发射完了火箭壳子就会掉在国内一些村庄，而且是随机的指不定今天就砸死谁，看到几年前那个纪录片，一个村民的17-8岁的女儿被砸死了，赔点钱了事

品葱用户 hkgusa 评论于 2020-05-12

中國一不輸出革命 二不輸出貧窮 三不輸出難民
只是輸出一下病毒跟太空垃圾而己 還有什麼好說的

品葱用户 Arti000 评论于 2020-05-12

請砸中維尼習所在位置，而且它必須死亡

品葱用户 汉娜怎么说 评论于 2020-05-12

汗，我还真以为会有什么大物件砸下来。

结果搜了下发现其实大部分都会在re-entry的时候烧掉。。。= =

品葱用户 **扛麥子高手

staff** 评论于 2020-05-12

[

它们以前在太原，酒泉发射卫星，每次发射完了火箭壳子就会掉在国内一些村庄，而且是随机的指不定今天就砸死…

](https://pincong.rocks/article/item_id-374520# “https://pincong.rocks/article/item_id-374520#")
我記得沒錯的話那部片是叫天降對吧，在大陸404了

品葱用户 ppp111 评论于 2020-05-12

要砸就砸贵州天坑里面那个望远镜吧！哈哈，这个才是大新闻！

品葱用户 **U檸三文魚

北美carl** 评论于 2020-05-11

[

血色5月 澳洲：怎么tm老是我

](https://pincong.rocks/article/item_id-374148# “https://pincong.rocks/article/item_id-374148#")
好，决定是你了悉尼

品葱用户 **Charlemagne

我就獨** 评论于 2020-05-12

[

要是掉到上海就麻煩了，因為不知道長征5B屬於哪一類垃圾

](https://pincong.rocks/article/item_id-374232# “https://pincong.rocks/article/item_id-374232#")
太草了🤣

品葱用户 待明之时 评论于 2020-05-11

现在落下来了吗？怎么还没看见消息

品葱用户 担麦人吃包子 评论于 2020-05-11

我靠中国的航空航天是为数不多值得吹的领域，我本想在国内冒充粉红吹一波的
我的天啊，现在我还怎么吹。。。

品葱用户 en010272 评论于 2020-05-12

品葱用户 **hun

en010272** 评论于 2020-05-12

[

長征五號B失敗對中共航天業的打擊意義：長征5是30年來中共第一大科技及規模火箭發射,火箭高53.7公…

](https://pincong.rocks/article/item_id-375157# “https://pincong.rocks/article/item_id-375157#")
……原來他們原本是打算秘密發射的啊，我以爲他們應該瞭解自己火箭的失敗模式是無差別自由落體，所以不會在意別人知道他們試驗過發射火箭了

算啦，反正被別的國家發現也挖掘不出什麽機密，一來下墜時已經燒毀了大部分機體，二來不燒本來就是破銅爛鐵

品葱用户 adblocker 评论于 2020-05-12

贵支务必自作自受 贵支务必自作自受 贵支务必自作自受 贵支务必自作自受

品葱用户 萌萌哒 评论于 2020-05-12

懂行的谁来说一下，长征5号到底是成功了还是失败了

品葱用户 **Alleria

待明之时** 评论于 2020-05-12

[

现在落下来了吗？怎么还没看见消息

](https://pincong.rocks/article/item_id-374806# “https://pincong.rocks/article/item_id-374806#")

根据CNN： 已经落在大西洋内。 轨迹飞过了 LA 和 NYC.

品葱用户 **Deatholder

Alleria** 评论于 2020-05-11

[

根据CNN： 已经落在大西洋内。 轨迹飞过了 LA 和 NYC.

](https://pincong.rocks/article/item_id-375222# “https://pincong.rocks/article/item_id-375222#")
可惜

品葱用户 **三零一小护士

Alleria** 评论于 2020-05-11

[

根据CNN： 已经落在大西洋内。 轨迹飞过了 LA 和 NYC.

](https://pincong.rocks/article/item_id-375222# “https://pincong.rocks/article/item_id-375222#")

这是昨天中国这边的回应

《环球时报》记者，作为中国首个一级半构型火箭，长征五号B火箭利用一级火箭直接将有效载荷送入预定轨道后，剩余的火箭部分的确在轨飞行，它的尺寸比常见的二级火箭要大得多。但值得注意的是，火箭本身结构是“薄皮大馅”，内部燃料在发射过程中消耗后，剩余的火箭壳体质量并不大，而且以铝合金为主的壳体很容易在大气层中焚毁。因此与空间站或大型卫星相比，火箭残骸对地面造成危害的可能性很小。此外，中国运载火箭残骸的飞行轨迹也并非“不受控”。它经过科研人员的精密计算，并利用火箭钝化技术，有意缩短在轨飞行时间。通常航天器残骸的最终落点都在南太平洋人迹罕至的“航天器坟场”。

结果既没在大气层中销毁，也没掉到南太平洋。真打脸

品葱用户 雙加不好的鴨語者 评论于 2020-05-11

歐洲發射火箭失敗後，馬上暫停發射，檢討和調查原因。
而中共一次失敗後，不找找原因，就馬上再射一次。

品葱用户 **Maru

三零一小护士** 评论于 2020-05-12

[

这是昨天中国这边的回应《环球时报》记者，作为中国首个一级半构型火箭，长征五号B火箭利用一级火箭直接将…

](https://pincong.rocks/article/item_id-375228# “https://pincong.rocks/article/item_id-375228#")嗯火箭残骸可防可控

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