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Industrial and scientific related topics => Astrophysics and space exploration => Topic started by: cybernut on 22 August, 2020, 09:39:11 AM

Title: Have we landed anything on Mars
Post by: cybernut on 22 August, 2020, 09:39:11 AM
I'm not sure we did, but would like to know what others think about this before I give my reasons.
Title: Re: Have we landed anything on Mars
Post by: a.flynn on 22 August, 2020, 07:50:17 PM
I think Viking 1 landed on Mars in the mid 1970s?  Bit before my time though, so don't know to much about it.
Title: Re: Have we landed anything on Mars
Post by: ATH019 on 26 August, 2020, 09:44:19 AM
I'm not sure we did, but would like to know what others think about this before I give my reasons.
Fact and truth may not be the same thing.  As a 'fact' there were further Viking lander missions to Mars in the 70s and 80s, so we have.  Whether this is actually true, who knows.


Global Moderator
Title: Re: Have we landed anything on Mars
Post by: and04 on 28 August, 2020, 09:35:23 AM
I'm not sure we can do it now never mind all those decades ago. :-X
Title: Re: Have we landed anything on Mars
Post by: cybernut on 28 August, 2020, 07:54:00 PM
Thanks for all the inputs so far.  I don't think we did because I don't think we had the capability to do it in the 70s and 80s.  I'll never forget a visit to the London Science Museum where one of the Viking missions was being exhibited, including a sample of Martian rock!  Frankly, it could have been a rock from the Gobi Desert. :P
Title: Re: Have we landed anything on Mars
Post by: MsLeon on 04 September, 2020, 09:42:03 AM
We landed on the moon in 1969, right?  Makes sense to me that we could then land something on Mars a decade later.  I think we did.
Title: Re: Have we landed anything on Mars
Post by: cybernut on 04 September, 2020, 07:54:16 PM
We landed on the moon in 1969, right?  Makes sense to me that we could then land something on Mars a decade later.  I think we did.
First part is debatable for many reasons.  I still don't think we landed radio controlled trucks  :P on Mars.
Title: Re: Have we landed anything on Mars
Post by: and04 on 05 September, 2020, 09:37:21 AM
We landed on the moon in 1969, right?  Makes sense to me that we could then land something on Mars a decade later.  I think we did.
First part is debatable for many reasons.  I still don't think we landed radio controlled trucks  :P on Mars.
Well said, because r/c vehicles is exactly what this is about.  Who controlled them?  Where were they located?  In a Martian orbiter?  Of course not.   ::)
Title: Re: Have we landed anything on Mars
Post by: MsLeon on 09 September, 2020, 09:47:07 AM
We landed on the moon in 1969, right?  Makes sense to me that we could then land something on Mars a decade later.  I think we did.
First part is debatable for many reasons.  I still don't think we landed radio controlled trucks  :P on Mars.
Well said, because r/c vehicles is exactly what this is about.  Who controlled them?  Where were they located?  In a Martian orbiter?  Of course not.  ::)
Weren't they controlled in the Kennedy Space Centre or something?
Title: Re: Have we landed anything on Mars
Post by: blag-it Admin on 10 September, 2020, 09:22:52 AM
Officially, yes or somewhere like that, but not in real time.  I think the Viking landers would have been programmed in advance of the mission or missions.



Admin
Title: Re: Have we landed anything on Mars
Post by: cybernut on 12 September, 2020, 09:34:19 AM
To say the least.  The point is this.  These were unmanned missions to Mars so there was nobody in the lander craft that got the Viking buggy's on the surface, so how were they controlled?  By someone on Earth?  It would have taken too long for the signals to get there, so impossible.  This leaves the only other option of them having been programmed before the mission itself, but then they would have had no autonomous control.  They didn't land anything on Mars in the 70s and 80s.
Title: Re: Have we landed anything on Mars
Post by: ATH019 on 13 September, 2020, 09:44:21 AM
I think it was part of the mission profile for the doors of the lander craft to open after touch-down and then for the Viking rover to exit onto the surface via a ramp, but I agree that lack of autonomous control is a big sticking point.
Title: Re: Have we landed anything on Mars
Post by: cybernut on 15 September, 2020, 09:53:51 AM
I think it was part of the mission profile for the doors of the lander craft to open after touch-down and then for the Viking rover to exit onto the surface via a ramp, but I agree that lack of autonomous control is a big sticking point.
Thanks for saying it's a big sticking point. :)  Without autonomous control, how would it have avoided the next pothole or crevice or large rock?
Title: Re: Have we landed anything on Mars
Post by: McGaskil on 16 September, 2020, 09:46:24 AM
I thought the co-ordinates and terrain data for the landing location were worked out prior to launch.
Title: Re: Have we landed anything on Mars
Post by: cybernut on 17 September, 2020, 09:44:11 AM
Co-ordinates for the landing would only have been approximate at best and not sure that available terrain info would have been detailed enough in 1969.
Title: Re: Have we landed anything on Mars
Post by: ATH019 on 22 September, 2020, 09:18:42 PM
Co-ordinates for the landing would only have been approximate at best and not sure that available terrain info would have been detailed enough in 1969.
First Viking missions were in the mid-late 70's.  1969 was the manned Moon mission. :P



Global Moderator
Title: Re: Have we landed anything on Mars
Post by: cybernut on 23 September, 2020, 09:19:43 AM
Yep, sorry - my mistake. :-[
Title: Re: Have we landed anything on Mars
Post by: blag-it Admin on 25 September, 2020, 09:16:00 AM
Yep, sorry - my mistake. :-[
Easy mistake to make, no doubt you were referring to available martian terrain data in the 70's.  I think you have a good argument there.


Admin
Title: Re: Have we landed anything on Mars
Post by: cybernut on 26 September, 2020, 09:39:31 AM
Thanks! :) I know it was certainly a silly mistake to make.  Must be because both begin with an 'm' that made me think of moon not mars - and o.c the moon landing was in 1969 - and well that's my excuse...  :P
Title: Re: Have we landed anything on Mars
Post by: McGaskil on 07 October, 2020, 09:36:33 AM
Thanks! :) I know it was certainly a silly mistake to make.  Must be because both begin with an 'm' that made me think of moon not mars - and o.c the moon landing was in 1969 - and well that's my excuse...  :P
Everyone's entitled to an excuse.  Anyway, so you still think it didn't happen?  How could they have fabricated something on that scale involving numerous US gvmnt departments, research bodies and so on?
Title: Re: Have we landed anything on Mars
Post by: cybernut on 10 October, 2020, 09:43:14 AM
Thanks! :) I know it was certainly a silly mistake to make.  Must be because both begin with an 'm' that made me think of moon not mars - and o.c the moon landing was in 1969 - and well that's my excuse...  :P
Everyone's entitled to an excuse.  Anyway, so you still think it didn't happen?  How could they have fabricated something on that scale involving numerous US gvmnt departments, research bodies and so on?
I don't know what the US equivalent of the UK's Official Secrets Act is, but believe me they have it.  The principle contractor would have been NASA which is a US government agency, and they in turn sub-contracted to various technical firms, etc, that would all have agreed to and signed some form of NDA or confidentiality agreement.  That's how they kept much of it a secret and how they fabricated it!
Title: Re: Have we landed anything on Mars
Post by: blag-it Admin on 11 May, 2021, 11:41:11 PM
But you don't know that!



Admin
Title: Re: Have we landed anything on Mars
Post by: McGaskil on 12 May, 2021, 12:52:05 PM
But you don't know that!



Admin
Exact!  You can't say these martian landings were fabricated unless you have proof, nor the moon landing for that matter.  As to NDA's, these couldn't have been applied to everything and to everyone involved.
Title: Re: Have we landed anything on Mars
Post by: cybernut on 04 June, 2021, 11:59:24 AM
No, not to absolutely everything and everyone, but certainly to all key personnel, contractors and other US gvmnt departments involved.
Title: Re: Have we landed anything on Mars
Post by: ATH019 on 05 June, 2021, 07:10:45 AM
They may well have signed NDA's to stop scientific and technical stuff from being leaked, but this still doesn't mean the mission's were fabricated.



Global Moderator
Title: Re: Have we landed anything on Mars
Post by: cybernut on 13 June, 2021, 12:02:17 PM
They may well have signed NDA's to stop scientific and technical stuff from being leaked, but this still doesn't mean the mission's were fabricated.



Global Moderator
It doesn't mean they weren't either and I just don't see how they had the capability to send two landers onto the surface of Mars just seven years after the manned moon mission.  Both Viking 1 and Viking 2 landed in 1976 allegedly... :-X
Title: Re: Have we landed anything on Mars
Post by: and04 on 20 June, 2021, 08:57:17 AM
They may well have signed NDA's to stop scientific and technical stuff from being leaked, but this still doesn't mean the mission's were fabricated.



Global Moderator
It doesn't mean they weren't either and I just don't see how they had the capability to send two landers onto the surface of Mars just seven years after the manned moon mission.  Both Viking 1 and Viking 2 landed in 1976 allegedly... :-X
Yea, doesn't seem likely somehow a mere seven year window between the two.  The Moon's 238,855 miles away, Mars is 356,000,000 miles away!