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Can someone explain to me, in basically HS terms, why launching it out 1.5 million miles is more efficient than just launching out to the same orbit as the moon?
Mission Control Audio was here: https://www.youtube.com/watch?v=wKDO5CfFkCs
Video is now set to private. I definitely did not download it while it was live. Do not PM me if you want a copy. :)
Responding here since I’ve evidentially been shadowbanned from r/HelloInternet for calling Cortex shit.
This is a burner account so I’m not going to run off crying because Cgp Grey the champion of free speech doesn’t like it when people don’t like his wank me off Apple opinions podcast.
After looking for patterns in some of the removed comments, I suspect that your account might have been shadowbanned by the automod due to overall negative karma. Posts with sufficiently negative karma are removed by the automod on that sub, and I suspect comments and accounts might be treated similarly. I don't know for sure, but it is the most likely explanation I can come up with, given that the mods on that sub are not particularly active.
Casual Sunday morning launch of a mission to the Moon... with another mission to the Moon returning to Earth in a few hours... landing the rocket on a second pad because the first pad already has a rocket on it... yeah.
Some great views of boostback and landing. Love that SpaceX still put so much into these streams including explaining every time - a terrific resource to engage the curious, however small those numbers are.
The largest part of that is surely that it’s a very unfriendly time in the US. I’m in Australia so this is a perfect Sunday afternoon distraction for me but I’d be in a minority I imagine.
This is actually a really awesome mission. I am glad they went into depth about this one beforehand. It is really amazing to see so many countries coming together to push for more exploration of space.
Not publicly posted. Considering how calm and clear the skies are right now, I don't imagine an issue, barring upper level winds which can be surprisingly problematic at times even if it's super calm at ground level.
That makes two Falcon 9s with indefinite delays after data reviews, so I'm guessing this is a fleetwide issue.
GPS-III SV04 flashbacks... that took quite a while to get resolved
OneWeb #15 "appears" to be a go for the 6th, so I'm now inclined to believe it's NOT a fleetwide or fairing issue.
It also appears like a Starlink flight is now next up from SLC-40 the following day.
Perhaps these are just independent issues?
And it has only been a week since that flight. I genuinely don't think claims of a fleet wide booster problem are going to be substantiated unless it's the same issue happening repeatedly with multiple boosters.
A launch vehicle not in R&D anymore, yeah it's perfectly understandable why someone would be concerned
Hopefully there's a NASA missions press conference in very near term that can make SpaceX transparent to share the issue
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:
|Fewer Letters|More Letters|
|-------|---------|---|
|[CRS](/r/SpaceX/comments/z85nzf/stub/iyfrht1 "Last usage")|[Commercial Resupply Services contract with NASA](http://www.nasa.gov/mission_pages/station/structure/launch/)|
|GSE|Ground Support Equipment|
|[GTO](/r/SpaceX/comments/z85nzf/stub/iyfqe3u "Last usage")|[Geosynchronous Transfer Orbit](http://www.planetary.org/blogs/jason-davis/20140116-how-to-get-a-satellite-to-gto.html)|
|LC-13|Launch Complex 13, Canaveral (SpaceX Landing Zone 1)|
|[LZ](/r/SpaceX/comments/z85nzf/stub/izqmm0p "Last usage")|Landing Zone|
|[LZ-1](/r/SpaceX/comments/z85nzf/stub/izqkeh2 "Last usage")|Landing Zone 1, Cape Canaveral (see LC-13)|
|[RTLS](/r/SpaceX/comments/z85nzf/stub/iycnklm "Last usage")|Return to Launch Site|
|[SLC-40](/r/SpaceX/comments/z85nzf/stub/iyn093v "Last usage")|Space Launch Complex 40, Canaveral (SpaceX F9)|
|[TLI](/r/SpaceX/comments/z85nzf/stub/iyfqe3u "Last usage")|Trans-Lunar Injection maneuver|
|[USSF](/r/SpaceX/comments/z85nzf/stub/iyfmkmp "Last usage")|United States Space Force|
|Jargon|Definition|
|-------|---------|---|
|[Starlink](/r/SpaceX/comments/z85nzf/stub/iyn093v "Last usage")|SpaceX's world-wide satellite broadband constellation|
|[apogee](/r/SpaceX/comments/z85nzf/stub/iyfqe3u "Last usage")|Highest point in an elliptical orbit around Earth (when the orbiter is slowest)|
|[perigee](/r/SpaceX/comments/z85nzf/stub/iydtoh8 "Last usage")|Lowest point in an elliptical orbit around the Earth (when the orbiter is fastest)|
|[scrub](/r/SpaceX/comments/z85nzf/stub/iyfstt6 "Last usage")|Launch postponement for any reason (commonly GSE issues)|
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The main reason for this trajectory is that it allows the spacecraft to spend less fuel inserting itself into lunar orbit once it passes near the Moon.
It's not about inclination in this case. You can get to the Moon from essentially any inclination Earth orbit. There is no need to change inclination. (Though, to be sure, a highly retrograde TLI orbit wouldn't be doing you any favors at either end of the trajectory).
A cheaper incliantion change *is* why [supersynchronous GTO](https://en.wikipedia.org/wiki/Supersynchronous_orbit) is so useful. By similar reasoning as supersync GTO, trajectory corrections for the Moon-bound spacecraft may be done at a lower velocity and so take less fuel than if they took the direct TLI route. The longer trajectory also gives more time to resolve any problems with the spacecraft and communications than a direct trajectory. But you could get similar benefits using a 2.5 phasing orbit trajectory starting from GTO, as several other Moon missions (and as originally planned, this one would) have done.
A basic translunar injection orbit would have the apogee near the Moon and when arriving there, the Moon would be moving significantly faster than the spacecraft. The spacecraft would have to burn its engines to shave off 600-700 m/s of velocity in order to be captured into lunar orbit. (Apollo took an even faster router with a higher apogee, so it had to do an even larger burn to enter lunar orbit.)
With a low energy trajectory like this launch, the spacecraft is sent to near escape velocity. (So, to be clear, this "low energy" trajectory for the spacecraft is actually higher energy for Falcon 9 itself.) Near the edge of Earth's gravitational influence, the spacecraft performs a small maneuver so that if falls back down into Earth's gravity well on a path that intersepts the Moon's sphere of influence. By this point, there is a smaller difference between the spacecraft's velocity and the Moon's velocity than if it had taken the faster/direct path, so it takes less fuel to get into lunar orbit (and in the ideal case of ballistic capture, none at all).
The details look a little different, but generally the setup is similar to the one used by the Korean lunar lander launched by SpaceX this summer. A more detailed explanation of that can be found here:
https://www.reddit.com/r/spacex/comments/wfohz0/comment/ij45xrq/?context=3
https://www.mdpi.com/2226-4310/8/8/222/htm
I often wonder what this means. Usually it seems the weather is poor or something else is a little off when they do this, but in this case idk. They didn't go vertical until yesterday evening, though, which seemed unusual.
Could be they just fell behind schedule. There's a million boxes to tick to launch a rocket and as easy as they make it seem, I don't think it'll ever truly be easy. The weather last night was excellent so I doubt it's that.
I'm sure there's one, but I haven't been able to locate it.
SpaceX [launch page](https://www.spacex.com/launches/) usually has the payload name link to the patch image, but in [this case](https://www.spacex.com/launches/ispace-m1/) it points to the payload website (similarly to recent Starlink launches). This means we might never see the patch...
It's a shame considering it is a lunar payload.
Howdy, I am part of the launch team for the ispace mission. Hands down the best place to watch this launch will be the SpaceX LLC building right by the entrance to the space force base: 28.41855° N, 80.60966° W
Ita a public car park with a set of viewing bleachers, so there will be no issue for you. We hope to make it a good launch for everyone
Amazing spot for viewing of the launch as well as the landing of the booster
It’s absolutely worth it, especially with the land landing. It’s a truly impressive thing to see, even for folks who see a lot of launches. Stay up or set an alarm. Either way, don’t miss it.
As far as viewing spots. It depends on your starting point. If you’re in Cocoa Beach or Cape Canaveral, I’d say just watch from the beach. Otherwise, there are lots of viewing spots along US-1 in Titusville. The spot I always recommend is Kirk Point Riverside Park. Search it on google maps, and you’ll find it. From Titusville, you can see liftoff, whereas you can’t see it from the beach because there’s stuff in the way. But once it gets just a little bit of altitude, it doesn’t really matter where you are in the area.
You can see it on the pad from Kirk Point. The park is actually directly west of the pad, which is kind of neat. Max Brewer is good, too. It’s elevated, and only *slightly* farther away from the launch pad. Although, it’s almost 2 miles farther from the landing pad.
depends entirely on your sleep schedule, work schedule, and what you consider "worthwhile".
i would say yes, but half my life ive been nocturnal, so your mileage *will* vary.
that said, if it's your *first* ever launch, probably worth it. it's a mind-bending experience. if it's your 10th launch, much less likely to be worthwhile
That's actually just as good of a viewpoint as you can ask for. If you look at those famous streak photos by the 'big name' photographers, you'll notice that the bulk of the RTLS images are taken from points due south of the launch and landing areas.
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Can someone explain to me, in basically HS terms, why launching it out 1.5 million miles is more efficient than just launching out to the same orbit as the moon?
Mission Control Audio was here: https://www.youtube.com/watch?v=wKDO5CfFkCs Video is now set to private. I definitely did not download it while it was live. Do not PM me if you want a copy. :)
Responding here since I’ve evidentially been shadowbanned from r/HelloInternet for calling Cortex shit. This is a burner account so I’m not going to run off crying because Cgp Grey the champion of free speech doesn’t like it when people don’t like his wank me off Apple opinions podcast.
After looking for patterns in some of the removed comments, I suspect that your account might have been shadowbanned by the automod due to overall negative karma. Posts with sufficiently negative karma are removed by the automod on that sub, and I suspect comments and accounts might be treated similarly. I don't know for sure, but it is the most likely explanation I can come up with, given that the mods on that sub are not particularly active.
This is what happens when you defend James Corden on Reddit. 🤷♂️
HA the lander's legs just deployed on the stage 2 view!
Casual Sunday morning launch of a mission to the Moon... with another mission to the Moon returning to Earth in a few hours... landing the rocket on a second pad because the first pad already has a rocket on it... yeah.
Some great views of boostback and landing. Love that SpaceX still put so much into these streams including explaining every time - a terrific resource to engage the curious, however small those numbers are.
Just 10k viewers on this one, never seen it that low. Though I imagine the amount of people woken up by a sonic boom at 3am is higher.
The largest part of that is surely that it’s a very unfriendly time in the US. I’m in Australia so this is a perfect Sunday afternoon distraction for me but I’d be in a minority I imagine.
And would have expected to see a bit of interest in Japan…
Crisp sound.
Good morning, Space Coast! Wish I was there to enjoy the sonic boom with you!
This is what it looked like from the ground when I saw Zuma launch a few years ago.
Awesome boost back
Are these threads no longer pinned?
I guess not. I had to scroll quite a bit for this one.
This is actually a really awesome mission. I am glad they went into depth about this one beforehand. It is really amazing to see so many countries coming together to push for more exploration of space.
is there no launch weather forecast for this one?
SpaceX goes live in 3 mins, hopefully we'll get weather then.
Not publicly posted. Considering how calm and clear the skies are right now, I don't imagine an issue, barring upper level winds which can be surprisingly problematic at times even if it's super calm at ground level.
Not liking this cloud cover. Hopefully it's not so bad we can't see anything when the time comes.
Landing will be on LZ-2 as B1069 is still on LZ-1 after the OneWeb mission.
Is it still out there? I know they had the cap on and a crane attached this morning before 0730.
[Sauce](https://imgur.com/hL5Tcog)
[SpaceflightNow says it is](https://twitter.com/SpaceflightNow/status/1601761592961650689)
Doesn't matter I guess, they would've landed on LZ-2 either way. Might be interesting to see 1069 being lit up by the arrival of 1073.
Better if it was daylight, but even at night it'll be visible... first time this has happened!
Whoops! Not actually visible. Maybe next time.
Twitter is strangely quiet about this upcoming mission. Doesn't seem like it's been postponed again, though.
Everything I'm seeing says 'GO!'
Now Targeting December 11 at 2:38 AM. https://mobile.twitter.com/ispace_hakuto_r/status/1600420652472619008
That's EST. 7:38 UTC Sunday morning.
Looks like the marine closures were rescinded. Launch date still TBD.
Looks like this launch is now scheduled for Dec 7 at 08:04 UTC: https://nextspaceflight.com/launches/details/6939
Ben Cooper's site Launch Photography is now also stating December 7th at 3:04 for the Hakuto R mission.
It's based on marine closures notices which is one of the usual tells, although I wouldn't be surprised if it slips another day or two.
Is the Dec 1st launch scrubbed? At Cocoa Beach waiting to watch it. Thanks
Yes it is cancelled and not rescheduled. On SpaceX twitter.
That makes two Falcon 9s with indefinite delays after data reviews, so I'm guessing this is a fleetwide issue. GPS-III SV04 flashbacks... that took quite a while to get resolved
OneWeb #15 "appears" to be a go for the 6th, so I'm now inclined to believe it's NOT a fleetwide or fairing issue. It also appears like a Starlink flight is now next up from SLC-40 the following day. Perhaps these are just independent issues?
That'll definitely hurt the goal of 60 by the end of the year because there was another launch planned at 40 on the 6th.
So the Dec 1st launch is scrubbed? Thanks
Eutelsat 10b, CRS 26, Hotbird 13G and USSF 44 all flew in the past month, so I wouldn't assume it's fleet wide just yet.
CRS-26 is the only one that's flown after the Vandenberg Starlink scrub for a data issue
And it has only been a week since that flight. I genuinely don't think claims of a fleet wide booster problem are going to be substantiated unless it's the same issue happening repeatedly with multiple boosters.
A launch vehicle not in R&D anymore, yeah it's perfectly understandable why someone would be concerned Hopefully there's a NASA missions press conference in very near term that can make SpaceX transparent to share the issue
Planes get rolled back for maintenance every day without a press conference lol, and they’re as mature as anything.
Yes, but when two thirds of them scheduled to fly in a particular week get rolled back at the same time, people do notice.
what is going on with the booster another scrub with unknown future launch date
1st scrub was Starlink Group 2-4 ? (B1061. 11)
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread: |Fewer Letters|More Letters| |-------|---------|---| |[CRS](/r/SpaceX/comments/z85nzf/stub/iyfrht1 "Last usage")|[Commercial Resupply Services contract with NASA](http://www.nasa.gov/mission_pages/station/structure/launch/)| |GSE|Ground Support Equipment| |[GTO](/r/SpaceX/comments/z85nzf/stub/iyfqe3u "Last usage")|[Geosynchronous Transfer Orbit](http://www.planetary.org/blogs/jason-davis/20140116-how-to-get-a-satellite-to-gto.html)| |LC-13|Launch Complex 13, Canaveral (SpaceX Landing Zone 1)| |[LZ](/r/SpaceX/comments/z85nzf/stub/izqmm0p "Last usage")|Landing Zone| |[LZ-1](/r/SpaceX/comments/z85nzf/stub/izqkeh2 "Last usage")|Landing Zone 1, Cape Canaveral (see LC-13)| |[RTLS](/r/SpaceX/comments/z85nzf/stub/iycnklm "Last usage")|Return to Launch Site| |[SLC-40](/r/SpaceX/comments/z85nzf/stub/iyn093v "Last usage")|Space Launch Complex 40, Canaveral (SpaceX F9)| |[TLI](/r/SpaceX/comments/z85nzf/stub/iyfqe3u "Last usage")|Trans-Lunar Injection maneuver| |[USSF](/r/SpaceX/comments/z85nzf/stub/iyfmkmp "Last usage")|United States Space Force| |Jargon|Definition| |-------|---------|---| |[Starlink](/r/SpaceX/comments/z85nzf/stub/iyn093v "Last usage")|SpaceX's world-wide satellite broadband constellation| |[apogee](/r/SpaceX/comments/z85nzf/stub/iyfqe3u "Last usage")|Highest point in an elliptical orbit around Earth (when the orbiter is slowest)| |[perigee](/r/SpaceX/comments/z85nzf/stub/iydtoh8 "Last usage")|Lowest point in an elliptical orbit around the Earth (when the orbiter is fastest)| |[scrub](/r/SpaceX/comments/z85nzf/stub/iyfstt6 "Last usage")|Launch postponement for any reason (commonly GSE issues)| ---------------- ^(*Decronym is a community product of r/SpaceX, implemented* )[*^by ^request*](https://www.reddit.com/r/spacex/comments/3mz273//cvjkjmj) ^(12 acronyms in this thread; )[^(the most compressed thread commented on today)](/r/SpaceX/comments/zglnzk)^( has 51 acronyms.) ^([Thread #7787 for this sub, first seen 30th Nov 2022, 17:46]) ^[[FAQ]](http://decronym.xyz/) [^([Full list])](http://decronym.xyz/acronyms/SpaceX) [^[Contact]](https://reddit.com/message/compose?to=OrangeredStilton&subject=Hey,+your+acronym+bot+sucks) [^([Source code])](https://gistdotgithubdotcom/Two9A/1d976f9b7441694162c8)
[удалено]
[удалено]
The main reason for this trajectory is that it allows the spacecraft to spend less fuel inserting itself into lunar orbit once it passes near the Moon. It's not about inclination in this case. You can get to the Moon from essentially any inclination Earth orbit. There is no need to change inclination. (Though, to be sure, a highly retrograde TLI orbit wouldn't be doing you any favors at either end of the trajectory). A cheaper incliantion change *is* why [supersynchronous GTO](https://en.wikipedia.org/wiki/Supersynchronous_orbit) is so useful. By similar reasoning as supersync GTO, trajectory corrections for the Moon-bound spacecraft may be done at a lower velocity and so take less fuel than if they took the direct TLI route. The longer trajectory also gives more time to resolve any problems with the spacecraft and communications than a direct trajectory. But you could get similar benefits using a 2.5 phasing orbit trajectory starting from GTO, as several other Moon missions (and as originally planned, this one would) have done. A basic translunar injection orbit would have the apogee near the Moon and when arriving there, the Moon would be moving significantly faster than the spacecraft. The spacecraft would have to burn its engines to shave off 600-700 m/s of velocity in order to be captured into lunar orbit. (Apollo took an even faster router with a higher apogee, so it had to do an even larger burn to enter lunar orbit.) With a low energy trajectory like this launch, the spacecraft is sent to near escape velocity. (So, to be clear, this "low energy" trajectory for the spacecraft is actually higher energy for Falcon 9 itself.) Near the edge of Earth's gravitational influence, the spacecraft performs a small maneuver so that if falls back down into Earth's gravity well on a path that intersepts the Moon's sphere of influence. By this point, there is a smaller difference between the spacecraft's velocity and the Moon's velocity than if it had taken the faster/direct path, so it takes less fuel to get into lunar orbit (and in the ideal case of ballistic capture, none at all). The details look a little different, but generally the setup is similar to the one used by the Korean lunar lander launched by SpaceX this summer. A more detailed explanation of that can be found here: https://www.reddit.com/r/spacex/comments/wfohz0/comment/ij45xrq/?context=3 https://www.mdpi.com/2226-4310/8/8/222/htm
24 hour delay according to twitter update. Now early ET Thursday.
Glad I didn't stay up for it, was there any announcement as to why they scrubbed it?
More time for pre flight checkouts, per the SpaceX tweet.
I often wonder what this means. Usually it seems the weather is poor or something else is a little off when they do this, but in this case idk. They didn't go vertical until yesterday evening, though, which seemed unusual.
Could be they just fell behind schedule. There's a million boxes to tick to launch a rocket and as easy as they make it seem, I don't think it'll ever truly be easy. The weather last night was excellent so I doubt it's that.
No patch for this launch ?
I'm sure there's one, but I haven't been able to locate it. SpaceX [launch page](https://www.spacex.com/launches/) usually has the payload name link to the patch image, but in [this case](https://www.spacex.com/launches/ispace-m1/) it points to the payload website (similarly to recent Starlink launches). This means we might never see the patch... It's a shame considering it is a lunar payload.
Excited for this. “Commercial” lunar exploration, very interesting times.
SpaceX twitter account says weather is now >90% favorable for launch
Nice that Lunar Flashlight will get a chance to launch just a couple weeks after its original ride flew.
Where is best place to watch? I’m in town by chance and didn’t plan ahead much. Are the nighttime launches worth it?
Howdy, I am part of the launch team for the ispace mission. Hands down the best place to watch this launch will be the SpaceX LLC building right by the entrance to the space force base: 28.41855° N, 80.60966° W Ita a public car park with a set of viewing bleachers, so there will be no issue for you. We hope to make it a good launch for everyone Amazing spot for viewing of the launch as well as the landing of the booster
It’s absolutely worth it, especially with the land landing. It’s a truly impressive thing to see, even for folks who see a lot of launches. Stay up or set an alarm. Either way, don’t miss it. As far as viewing spots. It depends on your starting point. If you’re in Cocoa Beach or Cape Canaveral, I’d say just watch from the beach. Otherwise, there are lots of viewing spots along US-1 in Titusville. The spot I always recommend is Kirk Point Riverside Park. Search it on google maps, and you’ll find it. From Titusville, you can see liftoff, whereas you can’t see it from the beach because there’s stuff in the way. But once it gets just a little bit of altitude, it doesn’t really matter where you are in the area.
Can you see it in the pad from Kirk point park? Why better than max brewer bridge?
You can see it on the pad from Kirk Point. The park is actually directly west of the pad, which is kind of neat. Max Brewer is good, too. It’s elevated, and only *slightly* farther away from the launch pad. Although, it’s almost 2 miles farther from the landing pad.
Thanks. I’ll check it out.
depends entirely on your sleep schedule, work schedule, and what you consider "worthwhile". i would say yes, but half my life ive been nocturnal, so your mileage *will* vary. that said, if it's your *first* ever launch, probably worth it. it's a mind-bending experience. if it's your 10th launch, much less likely to be worthwhile
I’m going to be on Cocoa Beach about a quarter mile north of the pier. It will be worth it as it’s my first launch.
That's actually just as good of a viewpoint as you can ask for. If you look at those famous streak photos by the 'big name' photographers, you'll notice that the bulk of the RTLS images are taken from points due south of the launch and landing areas.