SpaceX rockets and launches
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urbanspaceman
Well-Known Member
How feasible is Elon Musk's idea to establish a colony on Mars in the 2020s?
Answer (1 of 178): It's totally feasible for Musk to establish a colony on Mars by 2025. And experienced aerospace professionals like Bob Zubrin have already told him that gaggles of F9 Heavy's using orbiting refuel depots and on-orbit assembly techniques can do it right now. And Elon already HA...
There's a thread on Quora that discusses this subject, including a contribution from me.
But just to cite three points, of the many, many concerns about colonising Mars:
1) Gravity. Mars is 38% of Earth-normal gravity. Living in zero-G is terribly unhealthy, but there is no data about the health implications of living in low gravity. Sending hundreds of thousands of people off to Mars depends on things just happily working out OK
2) Who would go ? When people emigrated to North America in the 1700s, life was no worse, and in some ways (more land) better, with the same technology, and same jobs. Living on Mars, would be grim: like being sealed in a nuclear submarine. Very restricted vegetarian diet, no open spaces, no greenery, none of the diversions or variety of human civilisation on Earth. I wouldn't mind a gap year on Mars, but living there indefinitely would make a prison sentence on Earth seem agreeable by comparison.
3) Governance. It seems to me that politics is going to be a showstopper. How is Mars run, accounting for the fact that every person who puts their mind to it will be able to commit mass casualty events through sabotage, or just letting the external environment inside ? To guard against these risks, a police state with extreme surveillance powers will be needed.
Storm Fox
Trying the find the next noun to verb
That's easy. Musk will be the Imperator Imperator meaning as Elon Musk changes Twitter bio to "Imperator of Mars" and it will be self governing and people signing up to starlink must recognise Mars as having "no Earth-based government has authority or sovereignty over Martian activities."
SpaceX Starlink: User terms of service declare Mars as ‘free planet’ .
How much of this is serious in Musk's mind, and how much he is having a joke isn't clear.
How feasible is Elon Musk's idea to establish a colony on Mars in the 2020s?
Answer (1 of 178): It's totally feasible for Musk to establish a colony on Mars by 2025. And experienced aerospace professionals like Bob Zubrin have already told him that gaggles of F9 Heavy's using orbiting refuel depots and on-orbit assembly techniques can do it right now. And Elon already HA...www.quora.com
There's a thread on Quora that discusses this subject, including a contribution from me.
But just to cite three points, of the many, many concerns about colonising Mars:
1) Gravity. Mars is 38% of Earth-normal gravity. Living in zero-G is terribly unhealthy, but there is no data about the health implications of living in low gravity. Sending hundreds of thousands of people off to Mars depends on things just happily working out OK
2) Who would go ? When people emigrated to North America in the 1700s, life was no worse, and in some ways (more land) better, with the same technology, and same jobs. Living on Mars, would be grim: like being sealed in a nuclear submarine. Very restricted vegetarian diet, no open spaces, no greenery, none of the diversions or variety of human civilisation on Earth. I wouldn't mind a gap year on Mars, but living there indefinitely would make a prison sentence on Earth seem agreeable by comparison.
3) Governance. It seems to me that politics is going to be a showstopper. How is Mars run, accounting for the fact that every person who puts their mind to it will be able to commit mass casualty events through sabotage, or just letting the external environment inside ? To guard against these risks, a police state with extreme surveillance powers will be needed.
There was an experiment where volunteers spent 520 days in warehouse near Moscow, to simulate a trip to mars,
Future Mars Astronauts May Be Sleepy, Bored and Crabby
Future astronauts going to Mars could experience sleep problems, lethargy, and decreased cognitive performance over the course of a long mission.
interview with one of the volunteers
BBC World Service - Witness History, Mars-500 isolation experiment
Why six men were locked inside a spacecraft on earth for 520 days
to my mind it would be better to build self sustaining cities in deserts where people would want to live (i.e. recycle nearly all the water and waste, get all the energy from the sun, rather than something like Dubai)
2hats
Dust.
Double impact crater spotted by LRO.It now looks like that object is the Chang'e 5 T1 Long March 3C/E upper stage (originally launched October 2014).
Astronomers now say the rocket about to strike the Moon is not a Falcon 9
It's probable that the impact object comes from a Chinese rocket launched in 2014.arstechnica.com
Rogue rocket's moon crash site spotted by NASA probe (photos)
The March 4 impact created a weird double crater.
www.space.com
2hats
Dust.
Study for potential SpaceX mission to reboost HST (perhaps as part of the private Polaris human spaceflight programme).
www.nasa.gov
NASA, SpaceX to Study Hubble Telescope Reboost Possibility - NASA
NASA and SpaceX signed an unfunded Space Act Agreement Thursday, Sept. 22, to study the feasibility of a SpaceX and Polaris Program idea to boost
www.nasa.gov
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Crispy
The following psytrance is baṉned: All
Jared Isaacman wants to pay for it. The Polaris Programme is his private space programme, with the Inspiration 4 mission last year being a dry run. Polaris 1 will feature the first spacewalk from Dragon.
2hats
Dust.
A F9 punted a new generation (Navstar) GPS satellite to transfer orbit two days ago. The upper stage passivisation dump produced a nice spiral in the sky above Hawaii.
It seems the entire upper stage final disposal sequence was visible quite clearly (starts about 24 seconds in): burn, engine cut-off, reorientation, fuel dump.
NoXion
Craicy the Squirrel
SpaceX is going backwards:
www.nextbigfuture.com
Now that's some next level iNnOvAtIoN!
Expendable SpaceX Starship Could More Than Double Saturn V Payload | NextBigFuture.com
SpaceX’s Starbase factory is already building multiple intentionally-expendable Starships. Ship 26 and Ship 27 feature no thermal protection, have no heat
www.nextbigfuture.com
Now that's some next level iNnOvAtIoN!
A F9 punted a new generation (Navstar) GPS satellite to transfer orbit two days ago. The upper stage passivisation dump produced a nice spiral in the sky above Hawaii.
It seems the entire upper stage final disposal sequence was visible quite clearly (starts about 24 seconds in): burn, engine cut-off, reorientation, fuel dump.
Spent ages looking for it then realised that wasn't a logo I was ignoring.
urbanspaceman
Well-Known Member
Stoke Space aims to build rapidly reusable rocket with a completely novel design
"We took a leap of faith and jumped off a cliff."
"Stoke Space" is SpaceX-adjacent and embodies some interesting ideas for the reusable second stage: LH2-cooled metallic heat shield, aerospike-type engine, integrated fairing
weltweit
Well-Known Member
T & P
|-o-| (-o-) |-o-|
I read the headline as 'expandable', and I thought 'now that's a clever and intriguing idea!'SpaceX is going backwards:
Expendable SpaceX Starship Could More Than Double Saturn V Payload | NextBigFuture.com
SpaceX’s Starbase factory is already building multiple intentionally-expendable Starships. Ship 26 and Ship 27 feature no thermal protection, have no heat
Now that's some next level iNnOvAtIoN!
Dissapointed
Crispy
The following psytrance is baṉned: All
They're going to test all 33 engines on the starship booster today. If all goes well, it will be the most powerful rocket firing ever. More than twice as much thrust as the Saturn V. Peak power output of ~125GW which is equal to about 1/4 the average electricity consumption for the whole USA
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urbanspaceman
Well-Known Member
This is a SpaceX thread. Stoke is not SpaceX. But it is in the same business. So, figuratively, it could be said to be adjacent. Hope that clarifies things. Do let me know if you would like to discuss further.
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Crispy
The following psytrance is baṉned: All
Maggot
The Cake of Liberty
When's that in GMT?
Limejuice
Well-Known Member
2hats
Dust.
It looks like the first SpaceX Starship orbital test flight could be on - they've just filed NOTAMs for launch and recovery for attempts covering 6-12 April, 1355-1810BST each day. These might just be full test dress rehearsals as a shakedown for a date later in the month (Musk has previously hinted at 20 April as a target date), but could possibly include an option to switch to a live launch if everything behaves and all other factors (weather, range safety, other operational constraints) are favourable.
e2a: Targeting a sub-orbital trajectory that is approximately 50x500km at just under 26.4° inclination (doesn't quite complete one orbit).
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Crispy
The following psytrance is baṉned: All
This will, as they say, be FUCKING HYPEIt looks like the first SpaceX Starship orbital test flight could be on - they've just filed NOTAMs for launch and recovery for attempts covering 6-12 April, 1355-1810BST each day. These might just be full test dress rehearsals as a shakedown for a date later in the month (Musk has previously hinted at 20 April as a target date), but could possibly include an option to switch to a live launch if everything behaves and all other factors (weather, range safety, other operational constraints) are favourable.
