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Thread: Perseverance rover only three weeks from Mars

  1. #71
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by SMARTINSEN View Post
    apparently, it has safely landed and has transmitted the first photo

    Geez! That’s a worse fake than those “moon landings”...

    But, seriously, we have a remote control, robot camera on another planet sending back snapshots and scans and digital doodads?!
    That’s pretty damned amazing that we can do that.

    And, yes. I know about the Chinese robot.

  2. #72
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    Default Re: Perseverance rover only three weeks from Mars

    The one I saw had Bernie on it.
    If I use the word "God," I sure don't mean an old man in the sky who just loves the occasional goat sacrifice. - Anne Lamott

  3. #73
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    Default Re: Perseverance rover only three weeks from Mars

    The first photos are from the guidance and engineering camera, which is there to help the planners pick the safest and smartest route for the rover over the next few feet of exploration. The nifty camera that takes all the really cool stitched-together landscape pictures hasn't been deployed yet.

    Most of my morning was spent on NASA TV. My brother in law is pretty stoked. His instrument gets powered up in about two weeks for testing.

  4. #74
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by Alan H View Post
    The first photos are from the guidance and engineering camera, which is there to help the planners pick the safest and smartest route for the rover over the next few feet of exploration. The nifty camera that takes all the really cool stitched-together landscape pictures hasn't been deployed yet.

    Most of my morning was spent on NASA TV. My brother in law is pretty stoked. His instrument gets powered up in about two weeks for testing.
    I bet he is. Which instrument is he a part of?

  5. #75
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    Default Re: Perseverance rover only three weeks from Mars

    I am so happy about this. I hope all goes equally well for the scientific instruments and the helicopter.
    Gerard>
    Langley, WA

    Don't believe Republican lies.

  6. #76
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    Default Re: Perseverance rover only three weeks from Mars

    Should I ?

    It’s here! The first image from Perseverance after landing on Mars:

    This post is temporary and my disappear at the discretion of the managment

  7. #77
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    Default Re: Perseverance rover only three weeks from Mars

    What became of the descent vehicle? They just send that off to crash nearby?
    I was born on a wooden boat that I built myself.

  8. #78
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by Rich Jones View Post
    What became of the descent vehicle? They just send that off to crash nearby?
    Yes.

  9. #79
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    Default Re: Perseverance rover only three weeks from Mars

    Video of the landing should be available Monday - they need to wait for the orbiters to fly over and relay the data.

  10. #80
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by Rich Jones View Post
    What became of the descent vehicle? They just send that off to crash nearby?
    The word on the street is that it crashed with around 90kg of propellant left - about 25% of the total. Good margin (compared to Apollo 11...)

    Andy
    "In case of fire ring Fellside 75..."

  11. #81
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    Default Re: Perseverance rover only three weeks from Mars

    What do they plan to do with the 90Kg?

    Flamethrower? - Helicopter fuel?..... signal flare?
    I'd much rather lay in my bunk all freakin day lookin at Youtube videos .

  12. #82
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    Default Re: Perseverance rover only three weeks from Mars

    Given its onboard capabilities, I’d hope they would land it. Then use the remaining fuel to jet out a hole without lifting off. And take a pic. Edit-of the femur they uncover.
    Last edited by bluedog225; 02-19-2021 at 10:34 AM.

  13. #83
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    Default Re: Perseverance rover only three weeks from Mars

    I remember Ronald Raygun telling us about all the great "medicines" that would be developed in space.
    They did not help him.
    MPB is still a thing on earth.
    Is viagra from space?

  14. #84
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by Rich Jones View Post
    What became of the descent vehicle? They just send that off to crash nearby?
    That’s kind of baffling. A few more lines of code and it could have just landed with dignity. Surely it was capable...
    __________________________________________________ ________________________

  15. #85
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by CK 17 View Post
    That’s kind of baffling. A few more lines of code and it could have just landed with dignity. Surely it was capable...
    I think a petition is in order. Besides for future cannibalization by our robot descendants.

  16. #86
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    Default Re: Perseverance rover only three weeks from Mars

    Gotta say I’m a little bummed about the price of the RTG.

  17. #87
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    Default Re: Perseverance rover only three weeks from Mars

    I haven't seen any mention of an orbital component, did Perseverance's delivery vehicle remain in orbit to transmit data or was it a single-purpose craft?

  18. #88
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by Old Dryfoot View Post
    I haven't seen any mention of an orbital component, did Perseverance's delivery vehicle remain in orbit to transmit data or was it a single-purpose craft?
    I think the cruise stage must crash into the planet as it detaches from the lander package coming at Mars at 12,000 mph. brb

    wait you mean the vehicle that made the push out of Earth?
    Last edited by LeeG; 02-19-2021 at 12:22 PM.

  19. #89
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    Default Re: Perseverance rover only three weeks from Mars

    Quote:

    NASA's next Mars rover, Perseverance, will have a squad of spacecraft watching its dangerous descent from above Thursday (Feb. 18).


    At least four orbiters from NASA and its European counterpart will support the landing, and some of these spacecraft will continue to send data back from Perseverance during the rover's adventures on the surface of the Red Planet.

  20. #90
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by LeeG View Post
    I think the cruise stage must crash into the planet as it detaches from the lander package coming at Mars at 12,000 mph. brb

    wait you mean the vehicle that made the push out of Earth?
    Yes, the delivery vehicle, not the lander.

  21. #91
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by Old Dryfoot View Post
    Yes, the delivery vehicle, not the lander.
    heck no one seems to talk about these things, I’m guessing it’s on a heliocentric orbit after pushing the cruise package out to Mars.

    https://mars.nasa.gov/mars2020/space...ehicle/stage2/

    Stage 2: Centaur

    Fuel and oxidizer and the vehicle's "brains"; fires twice, once to insert the vehicle-spacecraft stack into low Earth orbit and then again to accelerate the spacecraft out of Earth orbit and on its way towards Mars.

  22. #92
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    Default Re: Perseverance rover only three weeks from Mars

    The Centaur goes into a heliocentric orbit because it misses Mars. It burns to set the spacecraft on the transfer orbit to Mars and then is done and discarded. The spacecraft itself then does course corrections to hit the atmosphere of Mars at just the right angle to enter.

    The cruise stage that "delivers" the rover is on the same trajectory, so presumably it enters the atmosphere as well, and probably burns up.

  23. #93
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    Default Re: Perseverance rover only three weeks from Mars


  24. #94
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    Default Re: Perseverance rover only three weeks from Mars


  25. #95
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    Default Re: Perseverance rover only three weeks from Mars

    what a long way from home

  26. #96
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by LeeG View Post
    the radioisotope thermal generator supplying 110 watts costs $110 million.


    https://en.wikipedia.org/wiki/Multi-...rator#See_also

    Cost[edit]
    The MMRTG cost an estimated US$109,000,000 to manufacture and US$83,000,000 to research and develop.[13] For comparison the production and deployment of the GPHS-RTG was approximately US$118,000,000.
    The price goes up when it has to work flawlessly for more than 10 years, a power failure would be the end of a more expensive program.

    I also suspect Plutonium is spendy, along with all the safeguards involved.
    PaulF

  27. #97
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    Default Re: Perseverance rover only three weeks from Mars

    And, as ever, those dollars are spent on Earth, not just blasted into orbit, never to be seen again.

    Andy
    "In case of fire ring Fellside 75..."

  28. #98
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by AndyG View Post
    And, as ever, those dollars are spent on Earth, not just blasted into orbit, never to be seen again.

    Andy
    Well the folks who built them can pay rent.
    PaulF

  29. #99
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by George. View Post
    We're on the verge of the most amazing video ever. This is, I bet you, a 'did the cams catch anything?' photo, released early. Nail the rest together, add audio, and I suspect NASA/JPL are going to wow us in the next few days.

    Andy
    "In case of fire ring Fellside 75..."

  30. #100
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by AndyG View Post
    And, as ever, those dollars are spent on Earth, not just blasted into orbit, never to be seen again.

    Andy
    It's a tiny amount compared to a number of other things governments spend money on.
    ​In a world full of wonders, man invented boredom.

  31. #101
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by WX View Post
    It's a tiny amount compared to a number of other things governments spend money on.
    It's also a tiny amount with unique, surprising, and amazingly beneficial outcomes. If only people looked ahead, at all.

    Cheaper than a squadron or two of F-35s.

    Andy
    "In case of fire ring Fellside 75..."

  32. #102
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by paulf View Post
    The price goes up when it has to work flawlessly for more than 10 years, a power failure would be the end of a more expensive program.

    I also suspect Plutonium is spendy, along with all the safeguards involved.
    I suspect using material from the nuclear weapons program has a lot of costs unrelated to design and materials. This is a lot simpler than an F35. It’s reliable but very inefficient.

  33. #103
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    Default Re: Perseverance rover only three weeks from Mars

    Every dollar spent on space is worth it.

    Every.
    One.

    Don't look now, but that is where the future is. In 30 years, when Elon Musk is making billions from asteroid mining, I'd tell you I told you so, except in all probability I will be dead.
    Gerard>
    Langley, WA

    Don't believe Republican lies.

  34. #104
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by Gerarddm View Post
    Every dollar spent on space is worth it.

    Every.
    One.

    Don't look now, but that is where the future is. In 30 years, when Elon Musk is making billions from asteroid mining, I'd tell you I told you so, except in all probability I will be dead.
    I wouldn’t be surprised if the next thirty years is the peak of American mega space projects and space exploration of this scale ends in 100 yrs. as multiple crisis reduce human population.

  35. #105
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    Default Re: Perseverance rover only three weeks from Mars

    Quote Originally Posted by CK 17 View Post
    That’s kind of baffling. A few more lines of code and it could have just landed with dignity. Surely it was capable...
    It would have had to carry additional fuel to do that, every gram means a huge amount of extra needed at every stage of the journey.
    Maybe off in the future though, space exploration seems to be making gains all the time.

    John Welsford
    An expert is but a beginner with experience.

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