Moon battle: New Space Force plans raise fears over militarizing the lunar surface
https://www.yahoo.com/now/moon-battle-s … 18652.html
'NASA astronaut Mark Vande Hei set a new record for the single longest spaceflight by an American after spending 355 days in orbit'
"I want my 355 days to be remembered as the record that got broken," Vande Hei said. "I am really looking forward to the next person doing something longer and getting further and further away and exploring more."
"I want [my mission] to be remembered as a stepping stone," he said.
NASA astronaut Mark Vande Hei didn’t shy away from discussing Russia’s invasion of Ukraine while orbiting the Earth with Russian cosmonauts. He also didn’t worry about social media posts that suggested Russia, which was tasked with bringing Vande Hei home, might leave him stranded on the International Space Station
https://www.houstonchronicle.com/
NASA astronaut Mark Vande Hei on how Ukraine crisis impacted partnership with Russians
https://news.yahoo.com/nasa-astronaut-m … 28529.html
Vande Hei says that the war in Ukraine is very much on the minds of the American and Russian astronauts who lived and worked together in orbit.
]]>Sounds of Mars and when people finally arrive... will they make art and musical instruments
What songs or Anthem will they play?
Old topic
https://newmars.com/forums/viewtopic.php?id=109
Music on Mars - To what will the Martians jam?
To get millions of people living in outerspace in the next 200 years would require a breakthrough in energy and propulsion - probably Fusion.
Having Fusion Power and propulsion would enable us obtain minerals from all over the solar system to build space craft and colonies pretty much anywhere.
Anti-Matter might become doable if we discover a way to create and store loads of it efficiently. CERN LHC will tell us more about that soon.
Want to revisit the dream of the Solar Federal Republic now that EM Drives are beginning to look like they might actually work? (as much as that offends all our scientific sensibilities) Sure, they might not be much use for heavy lifting out of Earth's gravity well, but from there on an EM fleet could push solar system colonisation.
]]>Having Fusion Power and propulsion would enable us obtain minerals from all over the solar system to build space craft and colonies pretty much anywhere.
Anti-Matter might become doable if we discover a way to create and store loads of it efficiently. CERN LHC will tell us more about that soon.
]]>“Makes the math simpler” ???
"A transfer orbit is most economical, but sometimes time saved is more important than energy or reaction mass saved"
A transfer orbit is what optimizes whatever needs to be optimized--time, energy use or some combination.
I find it hard to take these EPs too seriously. Maybe another word for EP could be illusion.
Bob
The simpler math is not just for me, but also the general reader, if I were to introduce some comples equations for the functions of transfer orbits, I would quickly lose alot of the readers reading this, but keep it as simple high school math and algebra, then I can demostrate the travel times and explain what I'm doing that much clearer, and as with your mistake in questioning why I use "velocity squared" to represent acceleration, we all make mathematical mistakes, by keeping the math relatively simple, I'm reducing the chances of making such mistakes. Oh by the way, I've corrected the travel times for the antimatter rockets from Earth to various planets. Previously I forgot to take into account the deceleration for half of the trip, now I have. For all of the planets except Neptune, the ship accelerates for half the trip at 1-G and decelerates for the second half of the trip, for Neptune, I assume a small amount of coasting for the fuel only lasts 14.5 days. The other .1 day is uses to match velocities with Neptune and do other things like land in its atmosphere.
]]>“Some make work will be provided for real humans just to keep them healthy, happy, and busy, though not work that is too demanding of their time unless they want it.”
How’s this for an idea. Some real human, disgusted with being kept healthy, happy and busy through make work, labors really hard at fomenting the revolution; melts all the damned machines, and becomes Solaris Khan, ruler of the Solar System.
That sounds a hell of a lot more interesting than all that virtual nonsense.
And one can be sure, humans being what they are, that revolt will occur.
Thank God!
"ALL HAIL THE KHAN
Under penalty of death."
And the Khan doesn't do virtual.
Bob
Alot of the stuff we do today is virtual, there are online rudimentary multiplayer games that are virtual, and real transactions occur there. There are also primitive 'bots' that challenge the players in these games and there is real artificial intelligence behind these 'bots', and each year their intelligence gets more and more sophisticated. Now tell me, if we can get an Artificial Intellignce program to guide the actions of a real robot, why not also that of a virtual character in a massive multi-user game? These "bots" are the forerunners of Electronic People. When we have androids that can mimic a human in every way, we will also have virtual characters that do the same. A virtual character can also direct the actions of a real robot, that robot can serve you coffee, clean your room, or mine the asteroids, they can do real work, just as robots assemble cars and do other things in today's factories, the concept is not to be laughed at.
]]>“Makes the math simpler” ???
"A transfer orbit is most economical, but sometimes time saved is more important than energy or reaction mass saved"
A transfer orbit is what optimizes whatever needs to be optimized--time, energy use or some combination.
I find it hard to take these EPs too seriously. Maybe another word for EP could be illusion.
Bob
It may be an illusion, but it is a mathematically precise and consistant illusion, and there is no such thing as illusionary intelligence, something either is intelligent or its not. What intelligent life ultimately boils down to is information. In our case our information which makes us us comes in the fome of organic molecules and cell structure, the information held in this form can also be stored electronically. Run the program and you have a computer simulation of life and if it is a good simulation the simulation will do precisely what real life would just as computer weather models predict the weather. It will take an awful lot of number crunching to simulate life, but at the rate we're going, I feel fairly certain that we'll have than number crunching capability by the 22nd century. To ignore that possibility is to ignore the microelectronics revolution that is going on today, and note: I am not asking you to believe in "magical" nanotechnology or anything of the sort, I am merely projecting today's computer trends 92 years into the future and coming up with this Electronic People concept.
]]>How’s this for an idea. Some real human, disgusted with being kept healthy, happy and busy through make work, labors really hard at fomenting the revolution; melts all the damned machines, and becomes Solaris Khan, ruler of the Solar System.
That sounds a hell of a lot more interesting than all that virtual nonsense.
And one can be sure, humans being what they are, that revolt will occur.
Thank God!
"ALL HAIL THE KHAN
Under penalty of death."
And the Khan doesn't do virtual.
Bob
]]>"A transfer orbit is most economical, but sometimes time saved is more important than energy or reaction mass saved"
A transfer orbit is what optimizes whatever needs to be optimized--time, energy use or some combination.
I find it hard to take these EPs too seriously. Maybe another word for EP could be illusion.
Bob
]]>But nevertheless there will also be O'Neill type colonies that rotate to produce simulated gravity for real humans, it will simply be a matter of them needing a place to live and the fact that with the presence of all those EPs and AIs as part of the workforce, space habitats will eventually become more available than real estate on Earth, it will also not impact the native ecosystems on Earth nor endanger animals there.
Humans that can't find a job will make due with 10% of percapita income that with the presence of EPs in the workforce, is bound to be quite substantial and sufficient. This will also be the transhuman era, but no one should be forced to become an electronic being through uploading their brain patterns. Some make work will be provided for real humans just to keep them healthy, happy, and busy, though not work that is too demanding of their time unless they want it.
The EPs have got to beware less they lose their connection to the real universe and fail to maintain their physical systems. If their computer servers break down, they will stop running their programs and they will effectively "die". EPs can live in their fantasy worlds, but every so often, they will have to inhabit a robot and do some real work in the real universe, it is part of the costs of living and maintaining their homes in virtual reality.
There is also the distinct possibility that some EPs might not even realize they are EPs, they might exist entirely in their own virtual worlds thinking them to be the real world. Someone else will have to do the physical maintenance of their systems of course.
]]>Not to throw cold water on thngs, but considering that the population of the solar system in 2050 will be distributed as
Earth, about nine billion
Rest of solar system, less than 100My predictions for the human population of the solar system in 2250:
Earth, five to ten billion
Rest of solar system, less than one million, maybe a lot lessI don’t think there’ll be a need for a solar government much more elaborate or independent than currently exists in Antarctica.
Bob
Electronic Persons and AIs are much more portable however, all it really takes is a receiving station, some place to store their programs and computers to run them on, and by the 22nd century, computers, and data storage devices will get very small and compact. Electronic Persons with their lower order AI assistants will operate robots, they do not require life support systems, and they can congregate in numbers that will support mass production in outer space, they will then be able to expand further throughout the Solar System without much further support from Earth. EPs can pretty much come and go as they please at trivial cost compared to transporting actual human beings througout the Solar System.
So you may be right, there could be hundreds of people in outer space by the mid 21st century, and perhaps one million human beings by the mid-22nd century, but the EPs are not so limited by matter and materials, and their presence can in turn make it easier and less costly for physical humans to travel in space. I take it your not assuming a massive presence of AIs or EPs by the 22nd century. I think that in 90 years alot can happen. The electronic computer revolution is not even 90 years old at this point. So if humans suddenly become Luddites and shun computers for the next 90 years, our progress in space colonization is bound to be slow.
]]>“acceleration away from the Earth at 9.8 m/sec^2” ??
Acceleration is measured in meters per second. What’s squared got to do with it?
Actually, I learned in Physics class that Velocity is measured in meters per second, Acceleration is the rate of change in velocity per second, hence its measured in meters per second per second; or per second squared (^2).
A simple math error is easy to make, I make plenty myself, so its nothing to make a big deal of. I simply double check my work for errors.
“cancel the forward orbital motion of Earth”
Makes the math simpler, you just worry about the distance between the two planets after negating the orbital motion of the planet your starting from. A transfer orbit is most economical, but sometimes time saved is more important than energy or reaction mass saved. If a human just wants to get to his destination, he may not want to spend half a year or more getting there, and if you got the fusion fuel to burn, why not use it?
“The planets all go in the same direction. Why cancel the Earth’s orbital velocity? Slowing down and speeding back up is a complete waste of time and energy.
In some cases, the planet your heading towards may not be conveniently located, and you don't want to wait for the next orbital window for the planets to be properly aligned before making your trip. Trips across the inner system by fusion rocket are much like trans-oceanic trips by sailing ship in the 17th and 18th centuries in duration.
“The transfer orbit optimized for time and utilizing a fixed amount of delta v would depend on the position of the two planets, but would never involve reducing orbital velocity about the sun to zero.
Hopefully, our 22nd century descendants will be smart enough to calculate transfer orbits. That ability was fully developed in the 20th century.
Bob
Now if your in a really big hurry, you'd use an antimatter rocket, the one I've calculated for uses 2.5 tons of anti-hydrogen in frozen crystaline form suspended in a chamber by electric and magnetic fields, a laser and magnetic/electric fields releases and channels tiny amounts or antimatter to the reaction nossil to be combined with matter where it heats reaction mass to produce thrust. Assume a 10 ton engine, 10 tons or reaction mass and 2.5 tons of hydrogen to combine with the anti-hydrogen, and that the rocket again produces a maximum of 100 tons of thrust. The total amount of acceleration this rocket is capable of is 14.5 G-days. This is well in excess of the amount required to travel to any planet in the Solar System, so the typical trajectory involves mostly accelerating to midpoint and then slowing down and matching the target planet's orbital motion and then landing on it. Reaching escape velocity uses trivial amounts of fuel and reaction mass as does matching the planets orbital velocity.
Type A Antimatter spaceships
Earth to Mercury
Maximum Distance: 3.48 days at 1-G of acceleration
Minimum Distance: 2.05 days at 1-G of acceleration
Earth to Venus
Maximum Distance: 3.77 days at 1-G of acceleration
Minimum Distance: 1.44 days at 1-G of acceleration
Earth to Mars
Maximum Distance: 4.68 days at 1-G of acceleration
Minimum Distance: 1.73 days at 1-G of acceleration
Earth to Jupiter
Maximum Distance: 7.27 days at 1-G of acceleration
Minimum Distance: 5.67 days at 1-G of acceleration
Earth to Saturn
Maximum Distance: 9.52 days at 1-G of acceleration
Minimum Distance: 8.08 days at 1-G of acceleration
Earth to Uranus
Maximum Distance: 13.14 days at 1-G of acceleration
Minimum Distance: 11.88 days at 1-G of acceleration
Earth to Neptune
Maximum Distance: 15.24 days with 14.4 days at 1-G of acceleration and the remainder coasting
Minimum Distance: 14.88 days with 14.4 days at 1-G of acceleration and the remainder coasting
Transfer times for Electronic Persons
Earth to Mercury
Maximum Distance: 12 minutes, 20 seconds + download time
Minimum Distance: 4 minutes, 18 seconds + download time
Earth to Venus
Maximum Distance: 14 minutes, 31 seconds + download time
Minimum Distance: 2 minutes, 7 seconds + download time
Earth to Mars
Maximum Distance: 22 minutes, 19 seconds + download time
Minimum Distance: 3 minutes, 2 seconds + download time
Earth to Jupiter
Maximum Distance: 53 minutes, 50 seconds + download time
Minimum Distance: 32 minutes, 43 seconds + download time
Earth to Saturn
Maximum Distance: 1 hour, 32 minutes, 13 seconds + download time
Minimum Distance: 1 hour, 6 minutes, 28 seconds + download time
Earth to Uranus
Maximum Distance: 2 hours, 55 minutes, 40 seconds + download time
Minimum Distance: 2 hours, 23 minutes, 35 seconds + download time
Earth to Neptune
Maximum Distance: 4 hours, 20 minutes, 33 seconds + download time
Minimum Distance: 3 hours, 59 minutes, 25 seconds + download time
Earth, about nine billion
Rest of solar system, less than 100
My predictions for the human population of the solar system in 2250:
Earth, five to ten billion
Rest of solar system, less than one million, maybe a lot less
I don’t think there’ll be a need for a solar government much more elaborate or independent than currently exists in Antarctica.
Bob
]]>Acceleration is measured in meters per second. What’s squared got to do with it?
“cancel the forward orbital motion of Earth”
The planets all go in the same direction. Why cancel the Earth’s orbital velocity? Slowing down and speeding back up is a complete waste of time and energy. The transfer orbit optimized for time and utilizing a fixed amount of delta v would depend on the position of the two planets, but would never involve reducing orbital velocity about the sun to zero.
Hopefully, our 22nd century descendants will be smart enough to calculate transfer orbits. That ability was fully developed in the 20th century.
Bob
]]>