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The Moon landings

Discussion in 'Personal' started by lanokia, Jul 10, 2019.

?

Do you accept the USA landed man on the moon on July 20th 1969?

  1. Yes

    54 vote(s)
    91.5%
  2. No

    5 vote(s)
    8.5%
  3. ALIENS!

    0 vote(s)
    0.0%
  4. Other

    0 vote(s)
    0.0%
  1. dumpty

    dumpty Star commenter

    Agree.

    Anyone know the physics behind getting to Mars? How long etc. It does disappoint that after such an incredible feat it is almost as if it all stalled as I don't think anything can capture the imagination like the Moon landings and possibly Mars - which seemed to be the 'natural' next big one....instead it all fizzled out.
     
  2. nomad

    nomad Star commenter

    The view of the Milky Way from Mars must be wonderful.

    [​IMG]
     
    racroesus, les25paul and dumpty like this.
  3. rouxx

    rouxx Lead commenter

    I bet you can see the whole Galaxy from there...
     
  4. rouxx

    rouxx Lead commenter

    Possibly even a starburst
     
  5. 50sman

    50sman Lead commenter

    I think that your position in this debate depends upon your age - if you are old enough to have seen it live and remember it (55 plus) you believe it happened - otherwise you are more sceptical
     
  6. MAGAorMIGA

    MAGAorMIGA Star commenter

    For those who claim we didn't land on the Moon, explain Big Muley:

    https://en.wikipedia.org/wiki/Big_Muley

    Lunar Sample 61016, better known as "Big Muley", is a lunar sample discovered and collected on the Apollo 16 mission in 1972 in the Descartes Highlands, on the rim of Plum crater, near Flag crater. It is the largest sample returned from the Moon as part of the Apollo program. The rock, an 11.7 kg (26 lb) breccia consisting mainly of shocked anorthosite attached to a fragment of troctolitic "melt rock", is named after Bill Muehlberger, the Apollo 16 field geology team leader. Big Muley is currently stored at the Lunar Sample Laboratory Facility at the Lyndon B. Johnson Space Center.

    Big Muley was discovered on the eastern rim of Plum crater (Station 1) in the Descartes highlands of the Moon. The rock's cosmic ray exposure age was discovered to be about 1.8 million years, linking it to ejecta, or debris, from the impact that formed South Ray crater, to the south of the Apollo 16 landing site.

    The rock's age has been estimated since 1980 to be approximately 3.97 ± 0.25 billion years. The rock was highly shocked at some point in its history, as indicated by the fact that most of the rock's plagioclase content was converted to maskelynite and/or plagioclase glass.
     
    mothorchid likes this.
  7. lanokia

    lanokia Star commenter

    Depends on orbital placement... the fastest probe we've ever launched was New Horizons which would do Earth-Mars [at their closest] in roughly 40 days. But that was at it's top speed. And it was unmanned.

    More realistically, for a manned vehicle, with supplies, fuel for return and equipment, you'd be looking at a 9 month trip. And that would only be doable every 4 years. So a manned landing would either be very short duration ... or a four year stay.
     
    mathsmutt likes this.
  8. mathsmutt

    mathsmutt Star commenter


    https://www.jpl.nasa.gov/edu/learn/video/mars-in-a-minute-how-do-you-get-to-mars/


    Moon to Mars Overview
    Working with U.S. companies and international partners, NASA will push the boundaries of human exploration forward to the Moon and on to Mars. NASA is working to establish a permanent human presence on the Moon within the next decade to uncover new scientific discoveries and lay the foundation for private companies to build a lunar economy.
    ….
    Exploration of the Moon and Mars is intertwined. The Moon provides an opportunity to test new tools, instruments and equipment that could be used on Mars, including human habitats, life support systems, and technologies and practices that could help us build self-sustaining outposts away from Earth. Living on the Gateway for months at a time will also allow researchers to understand how the human body responds in a true deep space environment before committing to the years-long journey to Mars.


    https://www.nasa.gov/topics/moon-to-mars/overview
     
    dumpty and lanokia like this.
  9. racroesus

    racroesus Star commenter

    Maybe Bernard has been scamming you.
     
  10. racroesus

    racroesus Star commenter

    I'll watch the launch sequence. There is a recording of the sequence which seems to have a Saturn 5 going up past the camera for several minutes.
     
  11. racroesus

    racroesus Star commenter

    You can't handle the truth!
     
  12. Telvis

    Telvis New commenter

    Putting someone on the moon really isn’t that difficult. It’s not rocket science.
     
    Ivartheboneless, lanokia and cissy3 like this.
  13. baitranger

    baitranger Established commenter

    We are frogs at the bottom of a well. Our current state of knowledge is based on our very limited view of the universe as we are able to perceive it.
    The frog knows nothing about the environment at the top of the well apart from what it can see and perhaps in its way, speculate about. According to NASA, over 95% of the universe we know about is composed of "dark matter" and "dark energy" , which are fancy ways of saying we don't know *** it is . And that is the known unknown , as Rumsfeld put it. The unknown unknowns may be millions or trillions more prevalent. So let's not get carried away about how clever we are, and how advanced our science is. There may well be a way of understanding the planet that sees it and uses it as what we see as a flat surface.
     
  14. irs1054

    irs1054 Star commenter

    The physics of space travel was worked out by a Russian Maths teacher
    Konstantin Eduardovich Tsiolkovsky
    [​IMG]
    who produced the rocket equation that related the final speed of a rocket to the speed of the exhaust, the mass of the rocket and the amount of fuel.

    The aspect that of the path required was worked out by Walter Hohmann an architect in Germany. He worked out the most economical path.

    The scale of logistical effort required to put people on Mars and return them safely is many orders of magnitude greater than that required to put man on the Moon.
    With Apollo everything needed was carried on one vehicle. It is doubtful, using current technology, if anything like that would be possible going to Mars. You would probably need unmanned pathfinder craft carrying supplies to land on Mars. The whole thing would be incredibly expensive.

    That alone is all that is needed to explain why we haven't gone yet.
     
  15. lanokia

    lanokia Star commenter

  16. starmandave

    starmandave New commenter

    As an astronomer who obviously is in the pay of NASA to keep my mouth shut, I am still waiting for the money LOL. I am lucky to have met the last man on the Moon, Gene Cernan.
    I run special Apollo shows in my planetarium, that have been written exclusively for Auriga Astronomy.

    https://www.mobile-planetarium.co.uk/
     
    lanokia likes this.

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