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Runaway Chinese space station could smash into a major city next year

thesolar65

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An out of control Chinese space station could smash into a major world city at the beginning of 2018.

The European Space Agency said the 8.5-tonne Tiangong-1, or “Heavenly Palace”, satellite could hit "any spot" between two latitude lines in the northern and southern hemispheres.

ESA experts said the 12-metre long craft would crash into Earth's atmosphere at some point between January and March 2018.

The UK should be safe, according to ESA's calculations, but New York, Los Angeles, Beijing, Rome, Istanbul and Tokyo are among major cities that could be at risk - although the potential impact area is so large that residents shouldn't be too worried about impending death from above.

Holger Krag, head of ESA’s Space Debris Office, said: "“Owing to the geometry of the station’s orbit, we can already exclude the possibility that any fragments will fall over any spot further north than 43ºN or further south than 43ºS.

“This means that re-entry may take place over any spot on Earth between these latitudes, which includes several European countries, for example.”

“The date, time and geographic footprint of the re-entry can only be predicted with large uncertainties. Even shortly before re-entry, only a very large time and geographical window can be estimated.”

Although it's hoped the craft will burn up in the atmosphere, ESA said "some portions of it will survive and reach the surface".

However, it was quick to stress that no human has been killed by space debris throughout the history of spaceflight

Jonathan McDowell, a Harvard University astrophysicist, previously warned there was no way of telling exactly where the space station was going to plunge to Earth.

“You really can’t steer these things,” he said last year.

“Even a couple of days before it re-enters we probably won’t know better than six or seven hours, plus or minus, when it’s going to come down."

The station will reduce significantly in size as the Earth's atmosphere burns it up.

However, large chunks of metal could still fall to Earth and injure or kill anyone present at the impact site.

McDowell added: "There will be lumps of about 100kg or so, still enough to give you a nasty wallop if it hits you."

Chinese space chiefs are less concerned about the risk posed by their space station.

A spokesperson for China's space agency said: "Based on our calculation and analysis, most parts of the space lab will burn up during falling."

China is pouring billions into its space programme and working to catch up with the US and Europe."

Beijing regards its military-run space programme as a symbol of the country's progress and a mark of its rising global stature.

As well as building a space station, it intends to eventually put one of its citizens on the surface of the moon.

In April, China vowed to send a craft to orbit Mars, land and deploy a rover to explore the surface by 2020.

http://www.foxnews.com/science/2017...on-could-smash-into-major-city-next-year.html
 
An out of control Chinese space station could smash into a major world city at the beginning of 2018.

The European Space Agency said the 8.5-tonne Tiangong-1, or “Heavenly Palace”, satellite could hit "any spot" between two latitude lines in the northern and southern hemispheres.

ESA experts said the 12-metre long craft would crash into Earth's atmosphere at some point between January and March 2018.

The UK should be safe, according to ESA's calculations, but New York, Los Angeles, Beijing, Rome, Istanbul and Tokyo are among major cities that could be at risk - although the potential impact area is so large that residents shouldn't be too worried about impending death from above.

Holger Krag, head of ESA’s Space Debris Office, said: "“Owing to the geometry of the station’s orbit, we can already exclude the possibility that any fragments will fall over any spot further north than 43ºN or further south than 43ºS.

“This means that re-entry may take place over any spot on Earth between these latitudes, which includes several European countries, for example.”

“The date, time and geographic footprint of the re-entry can only be predicted with large uncertainties. Even shortly before re-entry, only a very large time and geographical window can be estimated.”

Although it's hoped the craft will burn up in the atmosphere, ESA said "some portions of it will survive and reach the surface".

However, it was quick to stress that no human has been killed by space debris throughout the history of spaceflight

Jonathan McDowell, a Harvard University astrophysicist, previously warned there was no way of telling exactly where the space station was going to plunge to Earth.

“You really can’t steer these things,” he said last year.

“Even a couple of days before it re-enters we probably won’t know better than six or seven hours, plus or minus, when it’s going to come down."

The station will reduce significantly in size as the Earth's atmosphere burns it up.

However, large chunks of metal could still fall to Earth and injure or kill anyone present at the impact site.

McDowell added: "There will be lumps of about 100kg or so, still enough to give you a nasty wallop if it hits you."

Chinese space chiefs are less concerned about the risk posed by their space station.

A spokesperson for China's space agency said: "Based on our calculation and analysis, most parts of the space lab will burn up during falling."

China is pouring billions into its space programme and working to catch up with the US and Europe."

Beijing regards its military-run space programme as a symbol of the country's progress and a mark of its rising global stature.

As well as building a space station, it intends to eventually put one of its citizens on the surface of the moon.

In April, China vowed to send a craft to orbit Mars, land and deploy a rover to explore the surface by 2020.

http://www.foxnews.com/science/2017...on-could-smash-into-major-city-next-year.html

How about when it gets real low they launch an anti-satellite missile at it.
 
It is old,not even news.
This reminds me of one episode of <The West wing>:The fall‘s gonna kill you.

Well, most unlikely,but if it happens, we will pay for the damage.
By the way, that will be big news.
 
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Holger Krag, head of ESA’s Space Debris Office, said: "“Owing to the geometry of the station’s orbit, we can already exclude the possibility that any fragments will fall over any spot further north than 43ºN or further south than 43ºS

I wonder what that means for South Asia.

How about when it gets real low they launch an anti-satellite missile at it.

Wouldn't hitting it high work better??

And the Chinese have no careful plan for the deorbit, unlike how Russia had for the far heavier Mir space station[[1] :
Mir's deorbit was carried out in three stages. The first stage involved waiting for atmospheric drag to reduce the station's orbit to an average of 220 kilometres (140 mi). This began with the docking of Progress M1-5, a modified version of the Progress-M carrying 2.5 times more fuel in place of supplies. The second stage was the transfer of the station into a 165 × 220 km (103 × 137 mi) orbit. This was achieved with two burns of Progress M1-5's control engines at 00:32 UTC and 02:01 UTC on 23 March 2001. After a two-orbit pause, the third and final stage of the deorbit began with the burn of Progress M1-5's control engines and main engine at 05:08 UTC, lasting 22+ minutes. Atmospheric reentry (arbitrarily defined beginning at 100 km/60 mi AMSL) occurred at 05:44 UTC near Nadi, Fiji. Major destruction of the station began around 05:52 UTC and most of the unburned fragments fell into the South Pacific Ocean around 06:00 UTC.

Well, most unlikely,but if it happens, we will pay for the damage.

If someone gets killed, how will you pay for it??

By the way, that will be big news.

What will be??

---

[1] https://en.wikipedia.org/wiki/Mir#Final_days_and_deorbit
 
I wonder what that means for South Asia.






What will be??

---

Of course, if it falls on populated area, it won't be the first time, and the last.

The Unpredictable End of Skylab

http://www.spacesafetymagazine.com/space-exploration/skylab/unpredictable-skylab/

The race against time began – NASA still believed the first Space Shuttle mission would to take place in July the same year – just in time to save Skylab. Nevertheless, by December 1978, NASA surrendered. It was obvious that the Space Shuttle schedule was falling behind not months but years, and there was nothing in NASA’s power to keep Skylab in orbit.

The public got concerned – what would happen when an almost 80 ton colossus came crashing down to the ground? A short time before, a nuclear powered Russian satellite struck northern Canada and the topic of space debris made the headlines for the first time in history. When the time came for Skylab to “return home” the event was slated to become a media sensation. The San Francisco Examiner offered $ 10,000 for the first piece of the station delivered to its offices and the competing Chronicle promised to pay $ 200,000 if a subscriber were to be injured or have property damaged.

Then came July 1979. Controllers directed the station towards the southern ocean and hoped it would come down about 1,300 km southeast of Cape Town, South Africa. But as it always had done, not even now did Skylab behave according to expectations. It didn’t burn in the atmosphere as fast as expected and the controllers lost track of the space junk. Due to a calculation error, instead of disappearing in deep waters of the southern ocean, Skylab landed in Western Australia.

Pieces of the station were found scattered between the towns of Esperance and Rawlinna near Perth. Residents reported seeing colorful fireworks as the station broke up in the atmosphere and hearing a rumbling sound. One of the villages fined NASA $ 400 for littering. The reward promised by the San Francisco Examiner went to then 17 year old Stan Thornton who found 24 pieces of Skylab in the garden of a family house in Esperance.


Almost 35 years after Skylab’s reentry, the issue of space debris is becoming more and more pressing. One day, the scientific community will have to figure out how to safely deorbit the International Space Station which is much more voluminous than Skylab used to be.
 
:o:

Did it cause any harm??

Fortunately, no.

From wiki:

Kosmos 954 (Russian: Космос 954) was a reconnaissance satellite launched by the Soviet Union in 1977. A malfunction prevented safe separation of its onboard nuclear reactor; when the satellite reentered the Earth's atmosphere the following year, it scattered radioactive debris over northern Canada, prompting an extensive cleanup operation known as Operation Morning Light.[1][2][3]
 
Has There Been a Loss of Control?

Where will Tiangong-1 reenter?

How Difficult is it to Accurately Predict a Reentry?

Will objects from this reentry hit me or my property?
:rolleyes:

As all these questions can only expose how biased and ill-intentioned the Western propaganda machine is, hell-bent in smearing the ever more outstanding Chinese space achievements (due to desperation and jealousy as always), let us reassure all our Pakistani readers and Israeli hasbara as well, with some clarifications.

China has been working on developing laser weapons since the 1960s, and the People’s Liberation Army in 2015 published the book Light War that gives a central role to fighting a future war using lasers.

As already disclosed by the media, China is known to have operated at least 3 ASAT laser stations, in Anhui, Sichuan and Xinjiang.

In 2005, Chinese researchers have successfully conducted a satellite-blinding experiment using a 50-100 kilowatt capacity mounted laser gun in Xinjiang province. The target was a low orbit satellite with a tilt distance of 600 kilometers. The diameter of the telescope firing the laser beam is 0.6 meters wide. The accuracy of acquisition, tracking and pointing is less than 5 microradians.

Three researchers, Gao Minghui, Zeng Yuquang and Wang Zhihong disclosed plan for even more powerful ASAT lasers in The Chinese Optics journal in December 2013.

All worked for the Changchun Institute for Optics, Fine Mechanics and Physics – the leading center for laser weapons technology.

The plan proposed the building of a 5-ton chemical laser as a combat platform capable of destroying satellites in orbit. Given funding by the Chinese military, which is in charge of China’s space program, the anti-satellite laser could be deployed by 2023.


Although high secrecy is strictly enforced, one could compare the case of Tiangong-1 space laboratory with the ill-fated Phobos-Grunt Mars probe, that reentered over the South Eastern Pacific Ocean on 15 January 2011.

There was no random reentry over highly populated area. This time Tiangong-1 will also reenter over the Pacific Ocean, in a remotely controlled mode.
This suggests that China will secretly use its laser ASAT stations, to produce a thrust generated by heating the outer part of the spacecraft, thus lowering the perigee of Tiangong-1, when it had finally reached the ~140 km altitude threshold. This would eventually allow a safe reentry half an orbit later over the predesignated area over the Pacific Ocean.

This is the least China could do, as even North Korea has already disclosed its own Korean-style Anti-Meteor Laser System, needed to protect its planned future Lunar base, back in a New Year 2018 show!

:enjoy:

aerospace-tiangong-1-reentry-jpg.458630

▲ Map of Tiangong-1 ground track

reentry_map_2012_01_15_cb_1-jpg.458631

▲ An official map of the Phobos-Grunt reentry released by Roskosmos by 20:00 Moscow Time on Jan. 15, 2012.
Notice the similarity with Tiangong-1 regarding the relative location of the impact zone and the ASAT laser stations!


w020130723291509035315-jpg.458632

▲ Space imagery of Tianshan ASAT laser station. 中国天山部署战略反卫星激光武器


vlcsnap-2018-03-10-16h41m53s880-png.458633

▲ At T=40:54 North Korean Lunar base hit by meteor shower; Video published on Jan 1, 2018

38881704724_bc097d03e2_b-jpg.458635

▲ 10 North Korean astronauts combining beams of laser to thwart a meteor shower as depicted in a New Year 2018 show

vlcsnap-2018-03-10-16h46m07s336-png.458634

▲ At T=40:54 North Korean Lunar base hit by meteor shower; At T=41:33 Combined laser beams used to protect the North Korean Lunar base from meteor shower, in a New Year 2018 show. Video published on Jan 1, 2018

cool_thumb.gif





______________________________________



Latest astrophotographies from China's 2 orbital space laboratories: Tiangong-1 and Tiangong-2


dykeypdvoailcka-jpg.459161

https://defence.pk/pdf/attachments/...1/?temp_hash=e4d24499e00af15d7774fb0ec52e7788
https://pbs.twimg.com/media/DYKeyPDVoAIlcka.jpg
https://twitter.com/makkisse999/status/973515308710313984
#天宮1号 (TIANGONG 1)の通過を撮影。予報1.3等級、北西から東へ。最高通過点高度29°(方位28°)。3/13, 19:06~18:08 頃、太陽高度-10°。明るい&雲多い,と状況悪かったが、ちらっと見えました。。 露出10秒x6枚 比較明合成, 対角魚眼 トリミング
▲ TIANGONG 1 pass captured from Tanegashima on 13 March 2018, 19:06~18:08 JST, 10 seconds x 6, fisheye, APS-C10 mm, PENTAX K-5II s
Estimated Magnitude: 1.3


dyck-4zu0aa1e2p-jpg.459162

https://defence.pk/pdf/attachments/...2/?temp_hash=e4d24499e00af15d7774fb0ec52e7788
https://pbs.twimg.com/media/DYCk-4zU0AA1E2P.jpg
https://twitter.com/makkisse999/status/972959236274601984
#天宮2号 (TIANGONG-2)の通過を撮影。3月12日 5:20~5:21, 予報1.0等級。最高通過点高度67°。影出からMax高度を少し過ぎたあたりまで。アルクトゥルスと北斗七星の間を通過。1、2枚目が空いたのは連写用レリーズのロック忘れ。 追尾(ポータブル赤道儀) 露出20秒×4枚 比較明合成,
▲ TIANGONG 2 pass between Arcturus and Uras Major captured from Tanegashima on 12 March 2018, 5:20~5:21 JST, 20 seconds x 4, f/3.2, ISO 2500, APS-C21 mm, PENTAX K-5II s
Estimated Magnitude: 1.0


Target in range, all PLA Laser Stations ready to fire!:flame:

:enjoy:


______________________________________



More smoking gun, or rather smoking lasers!:flame:
:lol:


Descent of China’s Tiangong-1 will not cause damage to earth: expert

March 14, 2018

According to the latest information issued by China’s manned space engineering office, since Feb. 25 to Mar. 4, 2018, Tiangong-1 was orbiting in stable condition and good shape at an average height of about 251.5 kilometers (perigee height: 238.6 km; apogee height: 264.4 km; orbital inclination: 42.79 degrees).

China has been monitoring Tiangong-1, Zhu said, adding that the space lab will burn up after entering the atmosphere and the remaining wreckage will fall into a designated area of the sea, without endangering the Earth’s surface.

Aerospace expert Pang Zhihao explained that an international tradition to handle retired large spacecrafts operated at near-earth orbits is to let them fall to an abyssal zone in southern Pacific Ocean far away from the continents.

Being called the “graveyard of spacecraft”, the water was the falling location for Mir space station and Progress spacecraft of Russia, and the Compton Gamma Ray Observatory of the US, Pang added.

http://en.people.cn/n3/2018/0314/c90000-9437070.html


Coincidence? I think not!

200w_d-gif.459351


:enjoy:
 
Has There Been a Loss of Control?

Where will Tiangong-1 reenter?

How Difficult is it to Accurately Predict a Reentry?

Will objects from this reentry hit me or my property?
:rolleyes:

Since the hasbara boy keeps reposting the same litanies again and again all over the forum, let me reveal the following, confirming my previous assessment:
The Chinese PLA ASAT laser stations seem to have already proceeded with their first in a series to come corrective laser surgical pinpoint accuracy strikes, as shown in the sudden increased decay rate of Tiangong-1 witnessed by the official TLE of March 12!


cool_thumb.gif


tia1-2018-03-17_rder-png.460533

▲ It is clearly visible an anomalous burst from the TLE 18070.1268 (March 11) to 18072.1107 (March 13), 6 consecutive TLEs.

tia1-2018-03-18_mc-png.460534

▲ After the big variation in the decay rate on March 12, the totally controlled reentry is predicted at a slightly earlier date: 2-3 April 2018

screenshot-2018-3-20-satellite-tracker-3d-png.460600

▲ Groundtrack of a very good pass of Tiangong-1 over China's laser stations on 12 March 2018, especially a frontal approach over Tianshan ASAT station!

:enjoy:

Coincidence? I think not!

200w_d-gif.459351
 
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