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  • Elon Musk's plan to go to Mars (Article)

    From David E. Powell@21:1/5 to All on Tue Nov 22 10:26:29 2016
    http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars

    <http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars>

    The big unanswered question, for me, is how to get the rocket up off Mars again? Leaving the Moon to return to Earth was doable in 1969 because of the low Lunar gravity. While Mars' gravity is not as high as Earth's, it is a lot bigger than the
    gravitational pull of the Moon is.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From bob haller@21:1/5 to David E. Powell on Fri Dec 9 11:05:00 2016
    On Tuesday, November 22, 2016 at 1:26:32 PM UTC-5, David E. Powell wrote:
    http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars

    <http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars>

    The big unanswered question, for me, is how to get the rocket up off Mars again? Leaving the Moon to return to Earth was doable in 1969 because of the low Lunar gravity. While Mars' gravity is not as high as Earth's, it is a lot bigger than the
    gravitational pull of the Moon is.

    elon is sending a proof of concept lander return capsule . the idea is to use a rover to collect some mars samples, the rover will put them in the earth return capsule, and they will come back

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jeff Findley@21:1/5 to All on Fri Dec 9 15:41:36 2016
    In article <8c118bbc-d1ad-4432-90c3-3784a9f4c484@googlegroups.com>, hallerb@aol.com says...

    On Tuesday, November 22, 2016 at 1:26:32 PM UTC-5, David E. Powell wrote:
    http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars

    <http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars>

    The big unanswered question, for me, is how to get the rocket up off Mars again? Leaving the Moon to return to Earth was doable in 1969 because of the low Lunar gravity. While Mars' gravity is not as high as Earth's, it is a lot bigger than the
    gravitational pull of the Moon is.

    elon is sending a proof of concept lander return capsule . the idea is to use a rover to collect some mars samples, the rover will put them in the earth return capsule, and they will come back

    This is something proposed, but not for the first Red Dragon mission.
    The first Red Dragon will just land and might have some rudimentary
    science package inside. It's a proof of concept for landing on Mars
    using only retro-propulsion. No sample return on that mission.

    Jeff
    --
    All opinions posted by me on Usenet News are mine, and mine alone.
    These posts do not reflect the opinions of my family, friends,
    employer, or any organization that I am a member of.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From pedro1492@lycos.com@21:1/5 to David E. Powell on Sat Dec 10 16:01:52 2016
    On Wednesday, November 23, 2016 at 2:26:32 AM UTC+8, David E. Powell wrote:
    http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars

    <http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars>

    The big unanswered question, for me, is how to get the rocket up off Mars again? Leaving the Moon to return to Earth was doable in 1969 because of the low Lunar gravity. While Mars' gravity is not as high as Earth's, it is a lot bigger than the
    gravitational pull of the Moon is.

    Presumably it will require several trips to send the life-support and
    return rocket. Then if all the bits land safely on Mars, you can send
    a few humans up.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jeff Findley@21:1/5 to All on Sun Dec 11 11:07:00 2016
    In article <dc17b34b-0dd5-486c-8333-0a9e42595d9f@googlegroups.com>, pedro1492@lycos.com says...

    On Wednesday, November 23, 2016 at 2:26:32 AM UTC+8, David E. Powell wrote:
    http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars

    <http://lunar.xprize.org/news/blog/weekly-space-news-spacex-test-mars>

    The big unanswered question, for me, is how to get the rocket up off Mars again? Leaving the Moon to return to Earth was doable in 1969 because of the low Lunar gravity. While Mars' gravity is not as high as Earth's, it is a lot bigger than the
    gravitational pull of the Moon is.

    Presumably it will require several trips to send the life-support and
    return rocket. Then if all the bits land safely on Mars, you can send
    a few humans up.

    In Musk's plan, the vehicle to get you there is the return vehicle.
    What you need to send first is the propellant factory and power plant
    which turns CO2 from the atmosphere and H2 brought from earth into LOX
    and liquid methane. The LOX and liquid methane refuel the ship for the
    return to earth.

    Later missions could use locally found water instead of bringing H2 from
    earth. But early missions likely won't want to depend on finding water.

    Jeff
    --
    All opinions posted by me on Usenet News are mine, and mine alone.
    These posts do not reflect the opinions of my family, friends,
    employer, or any organization that I am a member of.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)