What went wrong with Starlink's collision avoidance? Two Near Misses with Chinese Space Station
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- Опубликовано: 1 июл 2024
- Twice the Chinese Tiangong station maneuvered to avoid a potential collision with Starlink.
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References:
TLE Data for altitude plots: www.space-track.org/
Space Station Launch: • China launches 'Tianhe...
Starlink-1095 Launch: • Starlink Mission
Starlink-2305 Launch: • Starlink Mission
Global Times Article: www.globaltimes.cn/page/20220...
Jonathan McDowell Tweet: / 1475621964538650633
Star Trek TNG Episode: en.wikipedia.org/wiki/Face_of...)
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#Starlink #SpaceX #China 
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I mean, this stop around 380km does look suspicious doesn't it?
Yeah, that's where I'd love an explanation from SpaceX. Maybe there is a legit reason, but the fact that they paused there right up to the near miss, THEN resumed seems very strange. I'm wondering if they planned out the whole maneuver BEFORE the station launched? And just didn't update it to account for the station's orbit? That could be a justifiable mistake. Interesting to see though!
A Hughsnet ad just interrupted this video. Hilarious!
Ha! I wonder if Hughesnet is specifically targeting videos about Starlink. I have no control over those RUclips ads - I feel like my audience is NOT the right market for them to go after. People who know about Starlink probably DON'T want Hughesnet :)
You will see a lot of that happening with so many starlink crashes will happen often
If it is a military operation it might have been to see if china has a wifi network that could be compromised on their station similar to the iss. Not sure why it could not be detected from ground though :).
Oh, I didn't even consider the possibility of the Starlink satellite doing an RF survey of the station as it flew past! That's a whole other level of theory!
@@MikeOnSpace Would it be worth it though? Close approach might help with sensitivity, but the is plenty sensitive hadware on ground and space for totally "stealth" investigations. Fun to speculate though.
I finally got my email that my starlink dish was available… the day I got my first bill for my ground based satellite solution. D’Oh! Canceled my starlink order, I hope someone else got their dish.
Might it not be as simple as the ascending or descending satellites to/ or from their service altitudes are simply incapable of collision avoidance?
Might it be that their capability of "collision avoidance" is only activated when they have reached their service altitude or their collision avoidance system is switched off when they leave their service altitude?
- With ascending satellites the main reason for not having switched ON collision avoidance might be that they are flying in a pearl-string-formation and thus their collision avoidance software would possibly try to (unnecessarily) avoid other relatively close ahead flying satellites, and precious propellant would thus be burned.
- With a descending satellite there might be another set of reasons why the automatic collision avoidance system could run into problems - such as the sensors not receiving easily interpretable data.
The temporary descent pause of the descending SpaceX satellite might indicate that the satellite had indeed tried to avoid the Chinese space station but did not really know how to handle the event:
The reason for this might be that the Chinese space station is quite a big object and the satellite sensors were possibly not prepared for dealing with NOT-POINT-LIKE objects.
For beforehand unconsidered edge cases - like for instance this one - the satellites might have been taught to keep their orbital flight height and wait for further instructions.
(The clearance to continue the descent would then likely be given by ground control.)
Its actually quite likely, the two modes might have completely different software stacks for navigation.
But then its a failure of mission planning.
TNG, DS9 or Voyager?
This was TNG, but I think my pick would probably be DS9 - I like the longer-term continuing themes of the war. Thanks for watching!
Elon just wanted to piss off the Chinese and test THEIR collision avoidance stuff.
If it were just SpaceX I might agree, but Elon also has Tesla which is betting hard on China. I don't think he'd want to piss them off intentionally!
It certainly feels like Elon Musk's heart is in SpaceX more than Tesla, but the money he's making from Tesla helps him keep SpaceX private with himself in full control!
@@MikeOnSpace China has also been hassling Tesla in China so here's another conspiracy theory.
Elon: " CCP, what was that you said about putting our plant out of operation?"
CCP: "That's right, we want our companies to supply more than Tesla does."
Elon: "Watch this." Brings a Starlink sat close to CCP space station.
Elon: " You were saying?"
@@gravelydon7072 that would trigger ww3. Imagine China sending a satellite to crash into the ISS.
@@Fraet And the Russians anti-sat test did what? It sent a debris cloud towards our satellites and the ISS such that the people on the ISS were told to head to their capsules for safety. And it didn't start WW 3. China starting something over that would just show the world exactly what we already know about China. That it wants to be a big dog but is really an ankle biter.
@@gravelydon7072 You do understand that the chinese could nationalize the tesla plant in shanghai?
What the US make publicly available now and what the US make public in situations where National Security is invoke are two different sets of things. The Chinese would be dumb to bet on US public data available for them in any time in the future when US Congress has already design them has a potential National Security threat.
3 km is a pretty Big miss
🙂
Thanks for watching!
thanks for your efforts
There's just so much interesting stuff going on! I love to do the research and share :)
What a fabulous rationale this gives every competitor and every foreign government (and the Romulins) to stop Starlink in its tracks.
LOL So true :) I'd love to hear an official explanation from SpaceX, but the US military explanation seems like a definite stretch!
Still here btw. Lol
Hey! Great to see your comments! I get busy with my "day job" in November/December, but great to be back with videos :) How's everything going with you?
@@MikeOnSpace Well to be fair, it's okay. If you remember, I got an internet upgrade on 8/3/21. Went from 2.8Mbps Down, 0.700Mbps Up. to 130-140Mbps Down, 26-29Mbps Upload speeds, so huge, huge improvement! However... over the past 2 months I have had some issues, my ISP have been aware of the issue. The issue is packet loss. I get it between every few seconds or every 1-5 minutes. Sometimes it's worse than others but watching Live streams, it buffers roughly every 1-5 minutes. I get the speeds I'm supposed to get but sometimes the packet loss is so bad that it does make things buffer. I don't have any other better option anyways but I love the upgrade. My ISP knows the issue and it's a hardware issue on their end and we were told they were upgrading their hardware/equipment and they could give us AN UPGRADE! They said we should be getting 1Gbps speeds this month but honestly, due to COVID, I think we'll be stuck with issues until February. So.... to answer your question, I'm doing "okay." Wish it wasn't having issues, I would say it's usable 95% of the time so that's good. It just gets completely unusable at times but it's more rare. Will admit, still much better than my previous useless ISP I had before.
Yeah, those are great upload/download rates, but buffering every 1-5 minutes is pretty bad! At least the ISP has acknowledged the problem, and it sounds like they've even identified the hardware - that's the biggest problem with most ISPs :)
Fingers crossed they get it fixed and it works!
As far as I can tell, nothing went wrong with Starlink's collision avoidance. What the Chinese authorities actually said: The trajectories weren't going to collide, but because we didn't know how they might change the direction of their thrust, we had to assume the worst. Here's the funny thing: Why didn't they just ask SpaceX? Did they not have time, or did they just not ask?
They did, and got zero replies from spacex and other relevent authorities.
Here's an official statement from the Chinese side, explaining what happened, so far rebuttals from other parties ruclips.net/video/IIxROuzxmEQ/видео.html
@@karthur3421 "got zero replies" -- How well documented are the attempts at communication? I have a hard time with the notion that SpaceX would have turned down a polite, well phrased request.
Aren't they in different orbit so this is bullshit?
Chinese media is totally reasonable in the questions asked, you anti-Chinese bias is mis-placed. You should refer to the official Chinese government statements o the topic which are factual and reasonable. do you take Fox News to be official US policy?
Nope. The Chinese space agency said themselves that the trajectory wouldn't have collided, but they didn't know how the Starlink unit would thrust in the future. This isn't being included in the narrative. Instead, a FUD narrative of a reckless maneuver is being forwarded. (If you disagree with this statement, take it up in the space reddits. There's not much point getting into the weeds here.)
Nothing went wrong with stars link collection avoidance, it just Chin stir up sh*t.
Not if your astronauts' lives have been put into danger.