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SpaceX Starship SN9 is ready to fly! - SLS Hotfire, Starlink, Electron & Virgin Orbit LauncherOne 

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Get Surfshark VPN at surfshark.deals/marcus - Enter promo code MARCUS for 83% off and 3 extra months for free! - SpaceX Starship SN9 is ready to fly! We are watching history in the making here and there have been a lot of updates to discuss this week. With the static fire completed, we should be ready for a flight early next week. We had the attempted full duration hot fire with some problems to talk about there for the Space Launch System. It may not be as bad as many of us initially thought. A starlink launch breaking several new records for SpaceX. Virgin Orbit blasted into orbit with the Launcher 1 demo 2 mission. And to top all that off, RocketLabs first flight for 2021 with another successful launch of the Electron rocket. What a week this has been!
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23 jan 2021

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Make Money Now
Make Money Now Pirms 22 dienām
Cool! Thanks for this video!
Neura Pod - Neuralink
Neura Pod - Neuralink Pirms 28 dienām
:)
JuaniX
JuaniX Pirms Mēneša
I'm late to this one, but it's always great to have these condensed summaries. Clearly 2021 has been very exciting so far for spaceflight!! Thank you, Marcus and all those who work with you to bring us such excellent content!
John de Haan
John de Haan Pirms Mēneša
No pulling the wool over the eyes of this community, lovely piece of investigation on those oil rigs. Loving it, I'm sure Elon had a chuckle, like a game of hide and seek.
Trif 55
Trif 55 Pirms Mēneša
Lower in the atmosphere where the freefall speed is constant as seen on SN8 the fuel would experience 1g
linas Zigmantas
linas Zigmantas Pirms Mēneša
Hi Marcus! I love your weekly summaries, it's very hard to keep up with all the progress by myself! I spotted the really good-looking Starship model in the background. Where did you get it from? I'm planning on buying one myself!
Ankit D
Ankit D Pirms Mēneša
Please make video on spacex floating starship port.
SV TRAVERSAY III
SV TRAVERSAY III Pirms Mēneša
The fuel in the tanks during the belly flop maneuver is subject to 1G if the ship is falling at a constant terminal velocity. More likely, as the atmosphere gets thicker is that the ship is slowing and thus the fuel is subject to slightly more than 1G. The video showing fuel and LOX sitting on the earth side of the tanks looks pretty correct.
LAVIN
LAVIN Pirms Mēneša
nice summary bro!
Nosknut
Nosknut Pirms Mēneša
Imagine not commenting: ""“Minecraft" "asmr" "pewdiepie" "music" "fortnite" "markiplier" “LVlocal is a perfectly balanced game with no exploits.” "Runescape" "World of Warcraft" "Shadowlands" "Dream" "MrBeast" "Warzone" "FaZe Clan" "100 Thieves" "Call of Duty" "Pokemon" "Pokemon cards" "card unboxing" "charizard" "they don't want you to know" "Flat earth" "round earth" "triangle earth" "earth is not earth" "what even is earth if not earth omg government is lying to you" "minecraft" "asmr" "pewdiepie" "music" "fortnite" "markiplier" “LVlocal is a perfectly balanced game with no exploits.” "Runescape" "World of Warcraft" "Shadowlands" "Dream" "MrBeast" "Warzone" "FaZe Clan" "100 Thieves" "Call of Duty" "Pokemon" "Halo" "Devil may cry" “LVlocal is a perfectly balanced game with no exploits.” “Cocomelon” “t series” “Minecraft" "hololive" "asmr" "pewdiepie" "music" "fortnite" "markiplier" “LVlocal is a perfectly balanced game with no exploits.” "Runescape" "World of Warcraft" "Shadowlands" "Dream" "MrBeast" "Warzone" "FaZe Clan" "100 Thieves" "Call of Duty" "Pokemon" "Pokemon cards" "card unboxing" "charizard" "they don't want you to know" "Flat earth" "round earth" "triangle earth" "earth is not earth" "what even is earth if not earth omg government is lying to you" "minecraft" "asmr" "pewdiepie" "music" "fortnite" "markiplier" “LVlocal is a perfectly balanced game with no exploits.” "Runescape" "World of Warcraft" "Shadowlands" "Dream" "MrBeast" "Warzone" "FaZe Clan" "100 Thieves" "Call of Duty" "Pokemon" "Halo" "Devil may cry" “LVlocal is a perfectly balanced game with no exploits.” “Cocomelon” “t series”
william francis Collett
not that my opinion matters, but I am tired of all the explosions/failures. I like Blue Origin because they are taking their time so there is less trouble. It feels optimistic.
RC DUDE FPV/UK
RC DUDE FPV/UK Pirms Mēneša
nice
Peter Best
Peter Best Pirms Mēneša
SpaceX: Takes a few hours to swap out an engine Boeing: *Sob*
Whitney Wang
Whitney Wang Pirms Mēneša
now the elites can leave the planet after they destroy it.
dt28469
dt28469 Pirms Mēneša
If its already free falling at terminal velocity, then its not accelerating even though its falling at constant speed. So the fuel will actually experience 1G, albeit with a bit of turbulence.
otto von ottsville
otto von ottsville Pirms Mēneša
The guy over on Engineering Today seems to be implying that the rigs will also drill for natural gas from the seabed. Recover/refine/refuel starships with total independence, anywhere in the world. This occur to anyone else?
Dean Cory
Dean Cory Pirms Mēneša
I thought SN9 crashed and burnt?
nobis_kid
nobis_kid Pirms Mēneša
The mysterious patio unsurprisingly wail because almanac pertinently tie past a public cocktail. thankful, instinctive party
Michael Gian
Michael Gian Pirms Mēneša
@8:00 once terminal (constant) velocity in the bellyflop is reached the only acceleration felt by the vehicle and its contents is that due to Earth's gravity.
Friday Californiaa
Friday Californiaa Pirms Mēneša
In Australia, they have the *_Spice Launch System_* 😂😂
Dennis Gillanders
Dennis Gillanders Pirms Mēneša
Lol SLS the ancient tech pilon
zews1
zews1 Pirms Mēneša
These periodic talk shows are starting to get a bit boring.
牧臻
牧臻 Pirms Mēneša
year
Critical Event
Critical Event Pirms Mēneša
How high is SN9 supposed to go in the test?
me at blue sky
me at blue sky Pirms Mēneša
Fuel will expierience smallest acceleration relative to body at a moment when last engine is turned off. But after body reaches terminal velocity, everything inside will expierience exactly 1G.
Andrew marshall
Andrew marshall Pirms Mēneša
The astonishing gear amazingly saw because consonant evocatively delight inside a shallow november. screeching, marked song
QuebecTerreaTerre
QuebecTerreaTerre Pirms Mēneša
What Elon Musk is bringing to the world is A-MA-ZING ! But I can't look at these rockets launches as anything other than distractions from the fact that all this money would be enough to guarantee health care for everyone, and more, in the Divided States of America.
Bob the Builder Awesome
whoo
Zachary Hill
Zachary Hill Pirms Mēneša
Great work Marcus! Keep it up
KeyserX
KeyserX Pirms Mēneša
The fuel in Starship's tanks is very simply experiencing 1G plus the deceleration of Starship relative to Earth. If Starship has reached its terminal velocity (and thus has a constant velocity), the fuel is experiencing exactly 1G, or 9.81m/s², of gravitational acceleration and will "feel" like the rocket were standing on the pad - just as a person riding on an elevator going down at constant speed will experience normal gravity.
Jen Jansen
Jen Jansen Pirms Mēneša
what if the crew wants to.."lose virginity" in there? 😂
Brenden Sue
Brenden Sue Pirms Mēneša
wouldn't the tanks have to wick'd? the ship will experience zero g at some stage eventually.
Jack Rainbow
Jack Rainbow Pirms Mēneša
these are chemical rockets. why are they called "Starships"?
tom Ickes
tom Ickes Pirms Mēneša
1) collapsing tanks ????? Some type of bag ???/ I don't know ??? made of some space-age stuff ....... 2) instead of pumps and such a giant plunger in the tank keeping it under constant and strady pressure ... no sloshing.......
Daniel Britton
Daniel Britton Pirms Mēneša
Not crazy about the name Starship. It does not fit that name. Bad casting. It is just a rocket.
pairojeans
pairojeans Pirms Mēneša
Tesla fanboy wet dream day day lol, good luck with shitty environmentally unfriendly rocket.
TehGoose
TehGoose Pirms Mēneša
I wonder how good space cheese will taste like
Yancarlo Ramsey
Yancarlo Ramsey Pirms Mēneša
At terminal velocity, you experience one gee (or so close to it that it makes no practical difference). If you're moving faster than terminal velocity you'll be slowing down and experiencing a little more then one gee. And if you're falling from space and have not yet reached terminal velocity for your current altitude (and pressure) then you'll be feeling less than one gee and your downward speed will be increasing.
LegendLength
LegendLength Pirms Mēneša
Why do the engines have so much intricate piping, speaking roughly?
Mark O'Cain
Mark O'Cain Pirms Mēneša
I always wonder what kind of space junk problems we'll be looking at in years to come with all these little satellites be flung into orbit.
Dylan Myers
Dylan Myers Pirms Mēneša
10gs
Tia Adler
Tia Adler Pirms Mēneša
Good on ya, Marcus!
trongod2000
trongod2000 Pirms Mēneša
I'm pretty sure I saw it said that the reentry of the booster amounts to around 4+ g when the rockets fire to slow down when entering the atmosphere. After that the air resistance results in a gravity of more than 1 g all the way to touchdown. Remember the booster is coming down at around 1000 feet per second just a mile from touchdown.
Patrick Putignano
Patrick Putignano Pirms Mēneša
How intense would be felt the flip maneuver if you were aboard a Starship ?
Dwight G
Dwight G Pirms Mēneša
It’s like I’m watching a spoiler review with Easter eggs. I’m not sure how you ended up on my feed but thank you 🙏
David Underwood
David Underwood Pirms Mēneša
Brownsville with another oil platform in nearby Galveston (just under 400 miles distant); well it it Texas ya'll know! . . Good report Marcus!
John Wren
John Wren Pirms Mēneša
Never before has someone said so much about so little
Art Alagao
Art Alagao Pirms Mēneša
The grubby gruesome cupcake locally bomb because area endoscopically poke including a ancient college. majestic, worthless pet
Zak Sullivan
Zak Sullivan Pirms Mēneša
Any other Australians 'excited' to stay up all night to watch SN9 hopefully launch and then celebrate Australia day?
Cy Starkman
Cy Starkman Pirms Mēneša
What do I think about the SLS? I think it is stupid and an irresponsible waste of resources. there is nothing cool about it.
staples4335
staples4335 Pirms Mēneša
Are you the same guy that builds watches and what not?
JayBird G
JayBird G Pirms Mēneša
What about shields? Ion?
JayBird G
JayBird G Pirms Mēneša
NASA put their tails between there legs since that's an Elon musk ship??
Fantazztico Rendidor Maravilloso
No Bickering, No Vulgarity, No Politics, No Religion Talk, No Trash Talking, No Flat Earth Talk, NO Anti NASA/SpaceX Talk.
SlipKnotRicky
SlipKnotRicky Pirms Mēneša
So, with SPACE-X'S Rideshare for small sat's, how does RocketLab and others fare? I wonder if SPACE-X was cheaper?
Les Chortos
Les Chortos Pirms Mēneša
Sls is an antique
Nelson's Wings
Nelson's Wings Pirms Mēneša
If SN is falling at constant speed, the tank contents experience 1G.
Nelson's Wings
Nelson's Wings Pirms Mēneša
@Edward Coulter sure but I think the question was specific to SN9 which didn't go very high.
Edward Coulter
Edward Coulter Pirms Mēneša
Yes, but it won't be falling at a constant speed, anywhere in its downward journey so its tank contents won't experience 1 G. Initially, in vacuum, it will be accelerated by earth's gravity thus you, as a passenger, would be accelerating but experiencing free fall yet 0 g, as also would the ship and other contents. Further down when the ship enters earth's thin upper atmosphere and with its fins and body beginning to create drag, you would feel the first tickles of deceleration and begin to have some weight but you would still be accelerating downward at an increasing velocity. On continuing to fall, air steadily thickens which causes deceleration rates to bite harder as the craft experiences steadily increasing air resistance. When the rate of deceleration reaches the point where you pass beyond 1.0 G, downward velocity will start to decrease. Deceleration rate will reach well beyond 1.0 G to the point where you would be unlikely to have the strength to stand or even to sit up. Craft velocity will start dropping sharply in this period of reentry. At some point the velocity will not be changing much as the air resistance and earth's gravity come to a near balance. You might want to call this terminal velocity. Since the outside air density is continually increasing as you continue to approach a landing, you can never reach a terminal velocity. Why? you may be screaming at me by now. Because terminal velocity is a continually varying number in this grand situation. The term terminal velocity suggests it will become constant over some range of altitude and that your weight will be 1.0 g as if you were standing on earth. Terminal velocity seems to be a misnomer as is applied to dropping things from buildings, bridges or planes, including people with parachutes. Before opening their chute, skydivers actually only fall a relatively short distance through air at a nearly constant density and actually do not experience terminal velocity. Not so with this rocket, which starts at a vastly different velocity, altitude and air density. On reentry, everything is changing, especially once the first wisp of air is encountered. The way you normally think won't work anymore because it is not within your experience. On the grand scale there is really no such thing as terminal velocity.
Daniel Landauer
Daniel Landauer Pirms Mēneša
1 g maybe more because it’s slowing down
Dill ster
Dill ster Pirms Mēneša
Great video guys 👍
chrismas
chrismas Pirms Mēneša
During the belly flop the fuel is experiencing 0.5 g.
Tranquility Base
Tranquility Base Pirms Mēneša
6:30 Starship as an airline isn't gonna happen mate. The fuel costs alone will make it very expensive vs airlines. Not to mention the fact the launch/landing pads will need to be in the middle of nowhere, which will negate most of the speed gains.
Carl Gianetti
Carl Gianetti Pirms Mēneša
engines damaging themselves during static fire is becoming slightly alarming.....not going well for realistic reusability
Tutti Frutti
Tutti Frutti Pirms Mēneša
SpaceX = NASA on steroids and Viagra overdose all at the same time.
julian
julian Pirms Mēneša
Given a LEO orbital velocity of around 7.5 km / s and a reentry time of 30 min or 1800 s, the Starship will have an average deceleration of 4.1666... or about 4.2 m/s^2. Therefore the relative "gravity" the fuel would be experiencing is 9.81 + 4.2 = 14 m/s^2 or 142.5% of Earth's gravity
jcoghill2
jcoghill2 Pirms Mēneša
And just about 10 yrs ago space exploration and commercialization was dead in the news. There was nothing happening. I like this better great episode.
Roger Barraud
Roger Barraud Pirms Mēneša
At TV, the fuel will experience 1G, by definition... TV ==> drag == G. QED.
Nathan Wade; Doc Dead Records
Thanks for the updates, Marcus love your channel
Arthur
Arthur Pirms Mēneša
My estimate of the effects of gravity during the freefall of Starship SN8. After the initial 11.32 seconds of freefall the gravity effect felt would increase from 0% to 88.75%. Based on 12.5 km Apogee and ~113 seconds of freefall to the flip maneuver. So, for the last 101 seconds the gravity effect = 88.75%. Starship Terminal velocity = 362.75 ft/sec or ~ 247 mi/hr
pcuimac
pcuimac Pirms Mēneša
NASA and DoD payed for Musk's hobby. What a waste of money. Nobody with a brain would fly with these things. The CO2 balance of this thing is also terrible, because it does not burn O2 and H2 but Methan, which results in CO2 and water. Not a great idea for human transportation, just to be back in Saudi Arabia for lunch. smh
Daniel Fuller
Daniel Fuller Pirms Mēneša
I would point out that _the starship is not an inertial reference frame,_ and as such, reasoning with forces relative to the rocket is not intuitive to understand. The ground in this case is assumed to be a reference frame, as long as the object is not at extreme heights. From here, we can reason clearly. We know that at terminal velocity, the force of drag counteracts the force due to gravity (Fg), and the object does not accelerate any further. ____ The starship experiences drag, but the fuel might as well be considered separate of the starship, thus: net Force on Fuel = Fg + 0
Daniel Fuller
Daniel Fuller Pirms Mēneša
Starship's casing pushes back on the fuel, or else the fuel would fall through the casing. The fuel pushes down on the starship, and starship pushes back. If we were to include this, we find out that the fuel stays in the same spot as starship: net Force on Fuel = Fg + 0 + Fstarship = 0
Michael Maxie
Michael Maxie Pirms Mēneša
I see a potential issue with the restarting of the deceleration of Spaceship. Withe the liquid fuel sloshing around during the 'be!!yflop' maneuver, the liquid 0² and H² may not settle enough for the fuel pumps to move the fuel to the combustion chamber in time to ignite (like the 1st test failure). During the maneuver the fuels are in freefall (weightless)/floating around in their tanks. Even after the ship goes vertical, the liquids are still not in contact with the pumps. Something is needed to keep the fuels in contact with the pumps for restart burn....idea: think of a baby bottle that has a bag that deflates as the baby drinks to keep the baby from sucking air instead of formula.
Green Nights
Green Nights Pirms Mēneša
just sky pollution. Leaving Earth to man was proven asinine for 40K years. I am in disbelief as I was as a child in disbelief of evil, can't believe humans are this moronic. I am proven wrong to be in disbelief.
Steve Cray
Steve Cray Pirms Mēneša
Just think if Elon had the tech that the US MIl have (as in TR3B) all this old fashioned rocket stuff would literally be history, but hey thats never gonna happen as the MIl are too bloody selfish. PS, surfshark has got very poor reviews.
Henri-fillip BAUER
Henri-fillip BAUER Pirms Mēneša
star chips
Henri-fillip BAUER
Henri-fillip BAUER Pirms Mēneša
Star ruffle
Roger Walker
Roger Walker Pirms Mēneša
If the calculations are correct there will be no, or very little, fuel in the main tanks - just the header tanks. If they tried to use the main tanks in place of the header tanks they would need some sort of sump in the massive tanks to collect the small amount of fuel needed for landing - a bit hit or miss. Much better to have dedicated header tanks for landing where you know where you are.
Nic Berry
Nic Berry Pirms Mēneša
NASA's SLS seems like a joke compared to SpaceX's Starship advancement in just a few years.
will2see
will2see Pirms Mēneša
Well, if it is falling with terminal velocity = constant speed (drag force = -gravitational force), then the fuel inside is experiencing exactly 9.8m s^-2 of gravitational acceleration, exactly the same amount as the rest of the body.
Roy Sinclair
Roy Sinclair Pirms Mēneša
SLS tested with "conservative" software? That means they are not using the FLIGHT software which is therefore not getting tested which makes the test a PARTIAL integration and not a FULL integration test.
Azwihangwisi Mulaudzi
Azwihangwisi Mulaudzi Pirms Mēneša
Where can I get the T-shirt you are wearing?
Andre' Thibodeau
Andre' Thibodeau Pirms Mēneša
Was recently reminded that the muskey boi is planning on colonizing mars and been running around trying to get info these last few days. The hype is real lol. Sidenote, how do you think flat earthers are going to react to commercial space travel? Ya think theyre gonna progress to "flat universe" or something?
Beechnut
Beechnut Pirms Mēneša
The fuel is at about 1g. If the Starship is at terminal velocity, and that velocity is slowly decelerating as it passes through thicker atmosphere ( difference between 30k ft and 10k feet) then the fuel will be at slightly more than 1g.
Maarten Van brakel
Maarten Van brakel Pirms Mēneša
Thunderfoot has decided to make one of his dumb busted videos on starship, i watched and considered he was seriously wrong with many points, would you be interested in making a response? I think it deserves one!
mans410
mans410 Pirms Mēneša
Why the camera on the sea landing pat always goes off ha..?
The Pickle
The Pickle Pirms Mēneša
Will all these StarLink satellites be knocked out if they are in the path of the next coronal mass ejection?
Eddie Lyons
Eddie Lyons Pirms Mēneša
Do you cover any space activities from Europe, Japan, China, Russia and India?
PhlyinHigh
PhlyinHigh Pirms Mēneša
joe biden might be president but atleast i can look forward to elon getting us off this rock
Syd Barrett
Syd Barrett Pirms Mēneša
What happened to sn13 and 14?
andone andrei
andone andrei Pirms Mēneša
The fuel inside the tank is going between 9-11.G
avid Non
avid Non Pirms Mēneša
I honestly don't want any failures. The possibility of loss of life and the financial cost are terrible hardships to consider. Why would any of us want to see explosions? Aren't there plenty of "safe crashes" already on the internet?
Mike McCormick
Mike McCormick Pirms Mēneša
We aren’t going to Mars. Too much debris and junk in orbit which can disable any craft at extreme speeds, and the lethal Van Allen radiation belts no living thing can survive if trying to breach. The real experts know this but there’s a lot of money to be made.
alex cepile
alex cepile Pirms Mēneša
you can spot marvin martian if you really pay attention
alexthegod2
alexthegod2 Pirms Mēneša
I really hope sls is the last nasa developed rocket. They are always billions over budget and delayed by decades. They are also very afraid of negative PR when any test fails (partially the medias fault). I appreciate everything NASA has given to all the private rocket companies, but its time to hand over the rocket duties to the private sector. SpaceX and Blue Origin lead the way with dozens of others coming up. NASAs funding will be put to better use using and investing in private rocket companies. Exciting times in Space! Cant wait for Starship to beat everyone to the moon! even if they dont it will be a fun space race this time around. Watching people walk on the moo in full HD is going to be awesome! I appreciate how fun Elon makes space. Racing cars on the moon?!?! Just brilliant.
Ed Dyer
Ed Dyer Pirms Mēneša
oh wow cameo for NSF, nice cross crafting. Please come visit, say Hi to the nerds on the live stream. Mr. M does sometimes. Look at that going to space standing not crawling through the locks - stand up and be counted. Rising to their feet the crowd cheers. Isn't gravity constant? 32 ft per second per second or 32 feet per second squared - popped into my head click the I like it button and tell a friend - your children or parent - Say Hey Hey did you see Marcus House share $tarlink, sweet I still want to have a virtual party with Elon at Boca Chica Village in Brownsville Texas. How about his 50th 6 28 ? How about an internet surprise party. I am trying to figure out how to do an Internet scavenger hunt to get an invitation to the party. Transporter-1 is happening now 9 nanoracks being let loose in a few minutes. History in the making. There they go, fly be free. -Will work for ticket to Mars. If I understood Elon a while back he offered a discount to robots being shipped off world. Is it because they can pull more g's? no air, water etc? -My Surviving Mars Mod has MaRS (Martian Automated Robot Syndicate) they are always bickering over automated not automated, kind of like people and skin color, place of origin, birth sex or some other distinguishing feature. Lets work past all that and please, work together. We go together or not. Put on your gloves, big boy shoes and a harness - and climb to the stars with me.
chromeinox
chromeinox Pirms Mēneša
Of course these engines use turbo pumps, right? I find hard to think of a time when these types of engines will be "really" reliable. It will be beyond though to compete with standard commercial flight, much less in a decade or two (which is their timeframe).
The Texas Tickler
The Texas Tickler Pirms Mēneša
Space isn't real lol makes you wonder what they're really doing 🤔 These "space ships" are actually high altitude nuclear tests. #BLM #staywoke
Joshua Cronin
Joshua Cronin Pirms Mēneša
Glad I just stumbled across this. You have a new regular watcher; well put together and good to hear a voice from our joint talking space news 😜
Andy Warwick
Andy Warwick Pirms Mēneša
Absolutely awesome. Outstanding work 10/10
ben3847
ben3847 Pirms Mēneša
1 G
Tanya Takes Over The World
5:35 Yet another Spaceballs reference. nice.
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