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Thread: In a first, NASA returns asteroid samples to Earth

  1. #61
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    Quote Originally Posted by SteyrAUG View Post
    If we had the ability to go get the entire asteroid in a cost effective way, we'd be able to transport loads from Mars. I just don't trust any entity to safely orbit an asteroid above the planet.
    Actually moving and parking an asteroid into earth orbit can be done today.

    All we’d need is a small ion driven space tug a little help from the sun, moon and the earth (gravity assist) and a lot of time because we’d need to modify an asteroid’s orbit when it is easy, some months or years before the targeted close approach.

    Then using gravitational slingshots we could drop it into an Earth orbit.
    Religion is doing what you are told no matter what is right. Morality is doing what is right no matter what you are told...

  2. #62
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    Quote Originally Posted by tn1911 View Post
    Actually moving and parking an asteroid into earth orbit can be done today.

    All we’d need is a small ion driven space tug a little help from the sun, moon and the earth (gravity assist) and a lot of time because we’d need to modify an asteroid’s orbit when it is easy, some months or years before the targeted close approach.

    Then using gravitational slingshots we could drop it into an Earth orbit.
    Yeah, some of us remember skylab.
    It's hard to be a ACLU hating, philosophically Libertarian, socially liberal, fiscally conservative, scientifically grounded, agnostic, porn admiring gun owner who believes in self determination.

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  3. #63
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    Quote Originally Posted by legumeofterror View Post
    The cost of getting an asteroid to orbit Earth vs Mars is not significantly different.

    Repeated Earth orbital missions vs. repeated Mars orbital missions to recover material, the difference in cost and difficulty is orders of magnitude.

    The maneuvering of a small asteroid with high value materials into earth orbit is a fairly low risk endeavor. Though if there is ANY of the stuff on earth anywhere at all getting a hold of it is going to be easier than mining an asteroid, earth orbit or otherwise. There have been propositions to bring a small asteroid into earth orbit for remote study for years but they have not received much traction. Even then it would be more on the order of ground based observations and small sample return missions.
    With the qualifier of a "small asteroid", I agree.
    It's hard to be a ACLU hating, philosophically Libertarian, socially liberal, fiscally conservative, scientifically grounded, agnostic, porn admiring gun owner who believes in self determination.

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  4. #64
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    Quote Originally Posted by SteyrAUG View Post
    Yeah, some of us remember skylab.
    LOL!!!

    Okay…
    Religion is doing what you are told no matter what is right. Morality is doing what is right no matter what you are told...

  5. #65
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    Quote Originally Posted by tn1911 View Post
    LOL!!!

    Okay…
    If people with thought processes like him had their way we would never get anywhere.

  6. #66
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    Quote Originally Posted by legumeofterror View Post
    If people with thought processes like him had their way we would never get anywhere.
    So you really trust THIS government to orbit a large asteroid? Given how preventable Challenger and Columbia were, I really don't.

    I'm also pretty much in favor of all space exploration, so I don't know where you are getting the idea that I don't support these ideas. You can say Chernobyl was a "preventable" disaster and still support nuclear energy.

    You've been here about as long as me, I invite you to go find a post by me anywhere on this forum where I don't support space programs of any kind. But there is a difference between sending men to Mars on what "might" be a one way mission and orbiting an asteroid that is large enough to do serious damage in Earth orbit. I also did concede that if we were talking about a small asteroid that would pose little to no risk if some event sent it to Earth, that wouldn't be a problem.
    It's hard to be a ACLU hating, philosophically Libertarian, socially liberal, fiscally conservative, scientifically grounded, agnostic, porn admiring gun owner who believes in self determination.

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  7. #67
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    Rather than bring raw materials from asteroids to Earth, use it in space to construct ships and stations.
    The problem, as always, is what to use for an energy source.

    I have no idea how many solar panels it would take to run a steel mill and foundry.
    Maybe the solar panels could be built in orbit from materials mined in the asteroids as well.

    Maybe uranium could be mined in the asteroids too.

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    Quote Originally Posted by Det-Sog View Post
    Spot on.

    If none of you have seen "The Expanse" on Amazon Prime, it pretty accurately sums this up. It even does a decent job of showing how effed up the planet will be when the NWO finally gets the UN running one world government. People that think like you and I not wanting to be a part of that will be living on Mars.

    Sadly, short of an accidental discovery, I think we are centuries away from inter-stellar travel. For perspective, landing a living human on the closest exoplanet in our galaxy is as unreachable to us right now, as the moon was to the cavemen 10,000 years ago. There is NO DOUBT there is intelligent life out there somewhere. Sadly, I doubt we will ever see proof though in my lifetime. I'm not talking microbes in a body of water, I'm talking intelligent beings that have evolved into a society.

    This is why I think "The Expanse" was so accurate. 200-300 years from now, we will still be just barely making it around our own solar system.

    https://www.amazon.com/The-Expanse-S.../dp/B08B49T8TZ
    After listening to the books and watching the series, I think we will be more like the opa. Disorganized, different factions, just trying to get along, but resourceful, and resisting being controlled. Opa is a lot like Northern Ireland the IRA, PIRA and the troubles.


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  9. #69
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    I don't believe we will be mining asteroids at a meaningful scale until after we have established some sort of waypoint on Mars, which won't happen until after a base is established on the Moon. Establishing some sort of base on the moon may happen in the next 30 or so years I will be alive, but it's hard to predict what the world will look like after the upcoming world War.

    We don't have to develop a means to leave the solar system to begin mining asteroids, there is a huge asteroid belt between Mars and Jupiter.

    Andy
    Last edited by AndyLate; 12-09-23 at 09:21.

  10. #70
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    Quote Originally Posted by AndyLate View Post
    I don't believe we will be mining asteroids at a meaningful scale until after we have established some sort of waypoint on Mars, which won't happen until after a base is established on the Moon. Establishing some sort of base on the moon may happen in the next 30 or so years I will be alive, but it's hard to predict what the world will look like after the upcoming world War.

    We don't have to develop a means to leave the solar system to begin mining asteroids, there is a huge asteroid belt between Mars and Jupiter.

    Andy
    Your sentence about the up coming world war reminds me of crabs in a bucket, pulling each other down instead of helping each other get out.

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