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  • Why Returning From Mars ls Impossible

    From JAB@here@is.invalid to misc.news.internet.discuss,sci.misc on Sat Apr 4 07:38:25 2026
    From Newsgroup: sci.misc

    Why Returning From Mars ls Impossible - Feynman's Warning

    Physics with Feynman

    You've seen the headlines: "Mars by the end of the decade." There's
    just one detail they keep glossing over -- actually coming back. And
    the physics of that return trip is staggering. It's not a bigger Moon
    mission. It's an entirely different beast, governed by an equation
    that punishes ambition exponentially. In this video, we explore the
    real engineering nightmare of a Mars return mission, drawing on the
    fundamental physics

    https://www.youtube.com/watch?v=0BqLcGEbIHQ

    Musk lives in a fanasty world...Dick Feynman died February 15, 1988.

    Tsiolkovsky, a Russian school teacher, knew this back in 1903

    Tsiolkovsky, K. "Exploration of Outer Space by Means of Rocket
    Devices" (1903)

    Feynman, R. "The Feynman Lectures on Physics," Volume I, Chapter 10: Conservation of Momentum (1963)
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  • From JAB@here@is.invalid to misc.news.internet.discuss,sci.misc on Sat Apr 4 19:03:33 2026
    From Newsgroup: sci.misc

    On Sat, 04 Apr 2026 07:38:25 -0500, JAB <here@is.invalid> wrote:

    Why Returning From Mars ls Impossible - Feynman's Warning
    Physics with Feynman

    So, I asked Google's AI: "In the book "Exploration of Outer Space by
    Means of Rocket Devices" by Tsiolkovsky, K., would a return trip from
    mars require more additional rocket fuel?"

    AI - In Konstantin Tsiolkovsky's seminal work, Exploration of Outer
    Space by Means of Rocket Devices (1903), the mathematical framework he established confirms that a return trip from Mars would indeed require significantly more rocket fuel than a one-way trip.

    This is due to the exponential nature of the Tsiolkovsky Rocket
    Equation. To return from Mars, a rocket must carry not only the fuel
    for the return leg but also the fuel required to transport that
    "return fuel" from Earth to Mars in the first place. =============================================

    Musk wants to go to the Moon now.....

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  • From Retrograde@fungus@amongus.com.invalid to sci.misc on Mon Apr 6 06:35:32 2026
    From Newsgroup: sci.misc

    On Sat, 04 Apr 2026 19:03:33 -0500
    JAB <here@is.invalid> wrote:

    On Sat, 04 Apr 2026 07:38:25 -0500, JAB <here@is.invalid> wrote:

    Why Returning From Mars ls Impossible - Feynman's Warning
    Physics with Feynman

    This is due to the exponential nature of the Tsiolkovsky Rocket
    Equation. To return from Mars, a rocket must carry not only the fuel
    for the return leg but also the fuel required to transport that
    "return fuel" from Earth to Mars in the first place. =============================================

    Musk wants to go to the Moon now.....


    I read somewhere, you can tell he's not serious because the only thing
    he has any interest in is the 'let's build a rocket' part, not the
    immense technological challenges inherent ot the entire rest of the
    endeavor, from radiation exposure to terraforming to water production
    and the rest of it. The rocket part is the only part he ever talks
    about.

    This is a very easily read and informative paper worth a look: https://www.nasa.gov/wp-content/uploads/2024/01/round-trip-mars-mission-mass-challenges.pdf?emrc=c0d7c4

    Note the section of the trip where the sun is in between earth and
    mars, rendering communication extremely difficult. Heck of a challenge.

    Here's a piece on the incredible radiation exposure travelers would receive. https://nasaspacenews.com/2024/03/mars-mission-a-one-way-ticket-for-now/
    Posted elsewhere
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  • From JAB@here@is.invalid to sci.misc on Mon Apr 6 21:59:34 2026
    From Newsgroup: sci.misc

    On Mon, 6 Apr 2026 06:35:32 -0600, Retrograde
    <fungus@amongus.com.invalid> wrote:

    The rocket part is the only part he ever talks
    about.

    Before Space X, he tried to have the Russians send a rocket to Mars,
    for what reason, I don't know. When he found out how much it was
    going to cost, he did the arithmetic, and founded SpaceX (Space
    Exploration Technologies Corp.)
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