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What, no 3 titted woman?
Elon Musk ventures in both technologies (not to mention rocketry) is leading the world.
richwicks says
I had a lobotomy in the end!!
Most lobotomies are in the head. :-)
That fused entanglement of positively and negatively charged atoms pulling and pushing at each other. We pull the Earth to us as much as the Earth pulls us to it.
Gravity is not just pulling us down, it is pulling us to center the nucleolus of the Earth. And since Earth is not perfectly flat, that down isn't always straight down, it is bent or not as forceful in other parts of forceful in other parts of the planet.
The only thing a Centrifuge does, is serve as simile to demonstrate what Gravity is doing to mass, without taking into account the counter lift that smaller mass being attracted to the larger mass gives back.
Where as spinning is actually the opposite of gravity
Gravity is acceleration, or indistinguishable from it.
Centrifugal "force" is also. I once did the math to calculate it.
richwicks says
Gravity is acceleration, or indistinguishable from it.
Correct, that is part of the General Theory of Relativity.
richwicks says
Centrifugal "force" is also. I once did the math to calculate it.
Yes, angular momentum. Fun stuff in high school physics class. Newton's 3rd Law of motion come into play.
Another way to get a simulated gravity in a spaceship would be to have the ship constantly accelerate at 1g. When halfway to the destination, turn around and decelerate at 1g. Just need to develop a propulsion system that can continually provide 1g worth of thrust.
Well, he's KIND of right. We're not experiencing increasing time dialation though are we? If gravity was really the same thing as constant acceleration, we'd be travelling at 99.999999999% the speed of light in short order.
richwicks says
Well, he's KIND of right. We're not experiencing increasing time dialation though are we? If gravity was really the same thing as constant acceleration, we'd be travelling at 99.999999999% the speed of light in short order.
Ha Ha!! Do not forget about the part "in an inertial reference frame."
Well, there's that crazy Orion drive. I hope we never use it.
richwicks says
Well, there's that crazy Orion drive. I hope we never use it.
I had to google that "Orion" drive.
A ship propelled by atomic bomb blasts behind it? Is this made by the Acme Corporation?
Isn't an atomic bomb detonation just a point source of heat that hits several million degrees? Without air to heat up to send into a shock wave an atomic explosion in space would have no pushing force, just inverse square rule heat propagation.
It produces a lot of energy, and Force = mass x acceleration.
richwicks says
It produces a lot of energy, and Force = mass x acceleration.
Still just a point source of heat, no appreciable mass to accelerate. Even then, it is supposed to push the ship from behind, like putting TNT behind a dragster to blow it across the finish line.
It works well in an atmosphere
Not everyone appreciates the good timeline. A persistent current of discourse holds that we shouldn’t go to Mars, that it is a misbegotten ambition, unrealistic, unprofitable, and even counterproductive. “Antarctica would be easier,” they say, “We should start there if we start anywhere.” Mars is too difficult; the technology doesn’t exist; it’s fantastically expensive, with no conceivable profit to be derived from a frigid desert littered with dead rocks, where the clouds themselves are made of red dust, where the air is too thin and toxic to breathe, where nothing can possibly grow. Therefore, they pronounce, we shouldn’t go. We shouldn’t even try to go. We should use our limited resources to solve our pressing problems down here on Earth – climate change, poverty, racism, the gender pay gap, the refusal of the chuds to use the correct pronouns.
Leave aside that if Europeans had waited to solve Europe’s problems, they never would have left. ...
Briefly, Mars is valuable because its shallow gravity well and proximity to the asteroid belt provides an ideal planetary surface on which to build the industrial infrastructure necessary to refine asteroids into useful metals and finished manufactured products, which can then be sent back to the terrestrial market (or shipped elsewhere in the solar system). ...
The purpose of Martian settlement, settlement of the wider solar system, and in the long run the Galaxy, isn’t turning a profit, but ensuring the long-term survival of consciousness in a hostile and uncertain universe.
Now either way you look at it, that's not practical to sustain a human crew for a year long voyage, or more to Mars
What ever amount of food you might think that would require for a crew of five. Quadruple that. They need food for a crew of 20. Or they could have high caloric food, which means bad nasty shit, that Science here on Earth says you're not supposed to eat. A diet of Sugar and Lard wont be sustainable on the human body for a long voyage, if that's all they ate for months and months.
It would have to be a multi-ship trip where they could link up with other ships that had supplies.
I'm not so sure repeating this with $10T worth of gold from Mars is such a good idea.
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Elena and I have had numerous discussions over the years about the possibility of flying to Mars and living there for the rest of our lives. Elena consistently rejects it. She could not imagine having to live six months in a spacecraft ("a tin can") while in transit to Mars. It was unthinkable for her to live in a place with no vegetation, no trees, no animals. She would not want to wear a spacesuit every time she went outside.
Some years ago, I was at a Mars Society Convention. One of the speakers asked all in the audience who were ready to go to Mars and spend the rest of their lives to stand up. I stood up. To me living on Mars would be an incredible adventure with so many new things to discover including life on the planet. Unfortunately, I am too old for this ever to be a reality.
I was once in a meeting with NASA scientist Chris McKay. He compared Mars to Antarctica. He said that it would never be more than a remote outpost with scientific research stations like McMurdo.
An intrepid man from Holland started an organization called Mars One. His goal was to establish a viable colony on Mars. He got the attention of Lockheed Martin and SpaceX. He got some 200 highly-qualified and educated men and women to sign up to start their lives over again on Mars. I have been in meetings with the founder and a number of people who had signed up for the trip. Sadly, not enough money was raised to get this project off the ground.
As a matter of interest, Elon Musk has the goal to retire on Mars.
Jordan Wright debunked a lot of past theories about colonizing Mars. He pointed out that these settlements would not be "a backwater" for a few research scientists and eccentrics. Rather it would be a dynamic and commercially viable venture. He pointed out several asteroids super rich with all sorts of minerals and rare metals. Mining these asteroids would be administered from the Mars colonies. Major human exploration missions to the moons of Saturn, Jupiter, and the outer planets would be launched from Mars. One could imagine interstellar missions with humans going to other stars beginning at Mars. Mars is a natural launching pad that is superior to Earth in many respects. Here is a fascinating podcast that I urge all of you to watch:
(183) Starship launches 4/10!!! Plus, why SpaceX Mars Colonists will be the richest humans alive! - YouTube