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SpaceNut

Administrator

From: New Hampshire

Registered: 2004-07-22

Posts: 28,960

Re: OldFart1939 Postings and YouTube Video Presentation(s)

The other username Palomar7 she used for a bit but felt it was still to masculine due to a few members that rubbered her the wrong way and did not come back after that.

Oldfart1939

Member

Registered: 2016-11-26

Posts: 2,392

Re: OldFart1939 Postings and YouTube Video Presentation(s)

I would like to express my deep appreciation that both GW Johnson and tahanson43206 virtually attended Dr. Bell's excellent presentation. The attendance was below normal--probably due to a PBR (Professional Bull Riders) event at the local arena and a gun show in town. Our core group of regulars was there, tho'. The weather was also the first shirt-sleeve warm day this Spring.

Last edited by Oldfart1939 (2024-04-15 23:48:16)

GW Johnson

Member

From: McGregor, Texas USA

Registered: 2011-12-04

Posts: 5,467

Website

Re: OldFart1939 Postings and YouTube Video Presentation(s)

Wyoming is a bit chillier than central Texas.  We've reached 90 F once already,  and are headed there again this week. 

It's been over a quarter century,  but my experience in Minnesota said that those folks think it is swimming weather,  once the ice pack breaks up on the lakes. 

GW

---

GW Johnson
McGregor,  Texas

"There is nothing as expensive as a dead crew,  especially one dead from a bad management decision"

Oldfart1939

Member

Registered: 2016-11-26

Posts: 2,392

Re: OldFart1939 Postings and YouTube Video Presentation(s)

In Minnesota they wear flip flops and shorts out in the snow!

GW Johnson

Member

From: McGregor, Texas USA

Registered: 2011-12-04

Posts: 5,467

Website

Re: OldFart1939 Postings and YouTube Video Presentation(s)

Yes,  I know.  I have seen it.

I was there 2nd half of winter 95-96 and for winter 96-97,  which were both 100-year record-setting winters for cold and snow,  even by Minnesota standards.  That was a real education for a Texas flatland boy. 

We moved in between Christmas 95 and New Year 96,  during a local heat wave.  It was 17 F.  Then it dropped below 0 and stayed there.  From New Years' Day to mid-March,  there was not one single day when it was not at least 20 below 0 F for the morning low,  and never got above 0 F for the afternoon high. 

That stretch finally broke mid-March,  when the wind died and the sun came out.  It felt warm.  We were all running around the snowbanks outside in short sleeves,  myself included.  Because it felt warm.  The actual temperature turned out to be positive 3 F.

The worst day was Feb 2,  1996,  in Mankato,  MN.  It had been -30 F all night with 40-knot winds.  It was -31 F in Mankato that morning,  with an afternoon high of -14 F.  Up in the arrowhead region near the Canadian border,  it was -61 F (not a wind chill).  200 miles further NW at Winnipeg,  it was -84 F,  again not a wind chill.

The next winter was not quite as cold,  but even snowier.  About 10 miles west of me,  the snowpack was 20-30 feet deep all the way to Montana.  I thought my thermometer was broken,  because it said -10 F every morning from November to March.  I found out it was not broken when we moved back to Texas,  and it went to 104 F.  I had 2-to-5 feet of snow in my yard all winter long.  The meltdown was only 2 weeks long,  in mid-April,  which caused massive flooding in multiple states.

GW

Last edited by GW Johnson (2024-04-16 14:41:24)

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GW Johnson
McGregor,  Texas

"There is nothing as expensive as a dead crew,  especially one dead from a bad management decision"

RGClark

Member

From: Philadelphia, PA

Registered: 2006-07-05

Posts: 711

Website

Re: OldFart1939 Postings and YouTube Video Presentation(s)

The Zoom session is set up for the presentation by Dr. Jim Bell

GW Johnson is already in the audience.

Postcards from Mars
NASA's Perseverance Rover and the Dawn of Mars Sample Return
Professor Jim Bell
Arizona State University School of Earth & Space Exploration
Principal Investigator, NASA Mars 2020 mission Mastcam-Z imaging investigation
Past President, the Planetary Society

OldFart1939 is introducing Jim Bell >> Warm Montana welcome ...  It's about 70 today

OH Good! Recording in progress ... hopefully the video will be made available for NewMars members who cannot attend live.

47 robotics missions to Mars since 1960's ... 8 nations ... 10 successful landers

Really difficult destination ... reasons given

About half  of the missions have failed ... NASA has 9 successes and China 1

*** Continuing after save

Mars today ... a pretty harsh place ...

Slides were not showing ... Dr. Bell will review ... The slides are not advancing properly

Slide ... 47 missions ....

Next slide ... Mars today ...

Next slide ... Perseverance and Ingenuity

Next slide with videos of rovers

Next slide ... video of Perseverance moving slowly but accurately...

*** Continuing after save

Slide: Mars 2020 Rover Science Payload

Slide: Mars 2020: Jezero Crater ... hard to decide where to go

A lake there a long time ago ... delta like the end of the Mississippi river

Slide:Marsw 2020 Mission Objectives

Geologic Exploration, Habitability and Biosignatures, Prepare a Returnable Cache, Prepare for Human Exploration

Note last item: Demonstrate in Situ Resource Utilization by converting atmospheric CO2 to O2

Note that Dr. Bell thinks that Chinese explorers might be first, in addition to NASA and SpaceX

Slide: Mars 2020 Mission Timeline

Very difficult because of global pandemic ... all possible protections for workers on site

Sol 1119 is today for the lander, on site!

Video ... Perseverance lands on Mars ... combination of animation and live pictures

Nice video!

*** Resuming after save

Slide ... landed close to where we wanted to go .... praise for rocket scientists and engineers

Slide ... https://mars.nasa.gov/mars2020/mission/ … the-rover/

Slide ... detail of travel plan

Slide landing site

surface flat by intention ...

Slide Sol 4 checkout - surround view - ? 360 degrees ?

Slide ... Martian Delta ... slide 18 Enormous boulders

Slide... helicopter ... tucked under the rover when landed

April 30th of 2021 ... spun blades for the first time

2500 rpm ... note that videos are embedded in the slide

A tiny patch from the Wright Brother's flyer is on the helicopter

Video from helicopter ... Ended up taking 72 flights ... far beyond mission goal

A mission has been approved ... Dragonfly ... quadcopter...

Slide ... first drilling / Coring attempt

Core tube came up empty... Rock too soft and crumbly

Slide ... hard volcanic rock nearby ...

Slide... view of end of corer ... numerous samples are visible in the slide

4 and a half billion years .... volcanic rock overlaid the floor of the lake

Slide ... Dusty place ... little video of dust devels  dirt on rover at sols 286 to 321

Slide ... Delta bound ... sand dunes ...

Slide ... samples of layered rocks

Slide ... samples ... October 2022 ... Sedimentary Mudstone

Arrived at delta front in late 2021...

Slide 28 ... Second delta core samples in the can October 2022

Slide 29 ... Hunting for Regolith! 

Slide 30 ... trail of movement ... Depot the Backup Cache ... dropped off 10 sample tubes in a little parking lot

Slide 32 ... depot

Slide 34 ... Pinestand Mountain Sol 718

Slide 35 Skrinkle Haven

Slide 36 Filling all the tubes ... 24 samples so far

Slide 37 ... Phobos solar eclipse

Used the image astronomically to determine the orbit of Phobos

Another part of this slide ... Mastcam-Z Sol 1039

Slide 38 ... 72nd flight of Ingenuity .. Jan 19, 2024 ... ... rover lost it's orientation due to sandy surface

Some day there may be a Smithsonian on Mars ...  historic aircraft

Slide 39 ... Tough Driving

Slide 40 ... more samples.... 21 rock cores, 2 soil samples , 1 atmospheric sample, 3 "witness tubes"

Slide 41 ... landscape

Slide 42 .... 24 Samples in the Cache ... "witness" tubes will be left empty to check whether there was contamination from Earth

https://mars-rock-samples at Nasa web site

Slide 43 ... Mars Sample Return ... mission not yet funded

*** continuing after save ...

Discussion of funding challenges ... Congress decided the original plan was too expensive ... 10 billion dollars

Comparable to James Webb telescope

Monday there will be a NASA press conference to announce a new plan

Video ... Mars Sample Return ...

Slide 45 ... description of global scientific analysis of samples

Slide 46... back to Mars Exploration Family Portrait

77 space agencies around the World now!

Slide 47... Follow along

http://mars.jpl.nasa.gov/mars2020

http://mastcamz.asu.edu

http://mars.nasa.gov/msr

Question ... how long to take a sample?

Very slow process ... Tai Chi dance the engineers have to perform to move the samples.

There is a second robotic arm to stow the sample

Question: ... can the rover pickup samples ? No... the rover cannot do that

A new rover is needed to pick up the samples

Question ... what are the black parts of the pictures ... those are landscapes assembled from multiple pictures.

Question about slide 35 ... the black section is the rover itself ... it is expensive to send data.

Question: ... missed the question ... answer "I don't know"

Possibly it was how long will the equipment last ... ? 80 years ?

A greater concern is funding ... NASA's budget has to pay for keeping these missions going.

The equipment may well outlast funding....

Next: Two books .... 2006 ... started writing books

*** continuing after save

Art of the Cosmos... another picture book

Not sure which book this is ... covers the geological history of our planet ...

wrote a book about space in general ...

? book about Voyager .... narrative book

First Saturday in May ... next meeting

Quite an interesting list of topics. Anyway to see it recorded on Zoom or YouTube?

  Bob Clark

---

Old Space rule of acquisition (with a nod to Star Trek - the Next Generation):

      “Anything worth doing is worth doing for a billion dollars.”

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 17,310

Re: OldFart1939 Postings and YouTube Video Presentation(s)

For RGClark re #31 .... thanks for asking that question!  The session was definitely recorded!

However, there is work that needs to be done to move a Zoom recording to YouTube.

Hopefully RGClark will inquire and report back on the disposition of that recording.

(th)

Oldfart1939

Member

Registered: 2016-11-26

Posts: 2,392

Re: OldFart1939 Postings and YouTube Video Presentation(s)

I believe that in the future, all talks which are recorded will be available through the Yellowstone Valley Astronomy Association Facebook page.

Oldfart1939

Member

Registered: 2016-11-26

Posts: 2,392

Re: OldFart1939 Postings and YouTube Video Presentation(s)

Here's a "heads up" notice re: Yellowstone Valley Astronomical Association meeting and my upcoming presentation on Cosmochemistry:
This coming Saturday, 4 May 2024 at 3:00 PM MDT. All are invited and I'll post the Zoom information as soon as I have it from our IT specialist.

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 17,310

Re: OldFart1939 Postings and YouTube Video Presentation(s)

For Oldfart1939...

You're cutting things a bit close here!

It would be helpful to have the Zoom address up on the board already.

I'm going to try to encourage SpaceNut to listen in.

He has a very old computer and may not have sound enabled, but we have time for him to set up to hear your talk.

Also, in your announcement, please use Time.is to provide the correct time zones for your NewMars audience.

You can use UTC for our European members, New York for SpaceNut, and Houston time for our Texas members.

(th)

Oldfart1939

Member

Registered: 2016-11-26

Posts: 2,392

Re: OldFart1939 Postings and YouTube Video Presentation(s)

Our time zone is Mountain Daylight Time. Same as Denver.
I'll try to get this Zoom address posted in the morning after contacting the IT specialist.

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 17,310

Re: OldFart1939 Postings and YouTube Video Presentation(s)

For all ...

time.is/utc can be set to show the time in cities of interest...

The city of interest in the case of today's presentation by Oldfart1939 is Denver.

To add Denver to your display of cities of interest, enter Denver into the Search window. The time in Denver will be shown.

Then add Denver to your favorite locations list.

The time.is application will save your preferences so the next time you open it the city of Denver will be present.

As a reminder, if anyone is thinking of attending the presentation today, if you are not familiar with Zoom, you can practice using the NewMars Zoom account at the topic for Zoom Collaboration.  When Oldfart1939 provides the link later today, just click on that and the Zoom program will  connect. You do not need a camera or a microphone.  All you need is a computer monitor and a sound system, so you can watch and listen. 

There will be a Chat window in case you have a question for Oldfart1939 after the presentation.

(th)

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 17,310

Re: OldFart1939 Postings and YouTube Video Presentation(s)

Reminder:
Here's a "heads up" notice re: Yellowstone Valley Astronomical Association meeting and my upcoming presentation on Cosmochemistry:
This coming Saturday, 4 May 2024 at 3:00 PM MDT. All are invited and I'll post the Zoom information as soon as I have it from our IT specialist.

3 PM Mountain Time equates to:

5 PM New Hampshire time

10 PM London time

4 PM Houston

(above per various time converters)

(th)

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 17,310

Re: OldFart1939 Postings and YouTube Video Presentation(s)

Here is the Zoom link that Oldfart1939 published for the talk by Dr. Jim bell...

Here is what I have from our IT guy for today's meeting with Dr. Jim Bell:

Topic: YVAA Zoom Talk -
Time: Apr 13, 2024 03:00 PM Mountain Time (US and Canada)

Join Zoom Meeting
https://us02web.zoom.us/j/85017538813?p … lvaDRSUT09

Meeting ID: 850 1753 8813
Passcode: 139105

---

One tap mobile
+17193594580,,85017538813#,,,,*139105# US
+12532050468,,85017538813#,,,,*139105# US

The Zoom address for today's talk may be different, but if nothing else shows up we can try the previous address.

Update: The Zoom above is still pointing to the talk on 4/13, so it is not likely to be available for today's event!

(th)

Oldfart1939

Member

Registered: 2016-11-26

Posts: 2,392

Re: OldFart1939 Postings and YouTube Video Presentation(s)

This talk is being recorded for a link on Facebook to YouTube. A live Zoom isn't possible due to scheduling through the library!

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 17,310

Re: OldFart1939 Postings and YouTube Video Presentation(s)

For Oldfart1939...

This post arrives on NewMars as the meeting is underway. Shortly you will be introduced as the featured speaker.  While we (in NewMars) cannot experience the moment live, we can anticipate the YouTube video of your presentation.  Best wishes for an ample audience, and for great questions for you to tackle.  Those will live on in the YouTube video, so please encourage your audience to come up with good ones!

In anticipation of the forthcoming video, I'll change the topic title to reflect it.

Thanks again for telling us of this homage you have prepared for Dr. Urey!

(th)