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July 24, 2019

outdoor playground equipment

What the types of outdoor playground equipment
https://www.wandeplay.com
Nowadays, outdoor play equipment has gradually occupied a place in parks, playgrounds, plazas, etc., and has been widely welcomed by many children. It has even become a way for most children to have fun in their spare time or weekend time. So let's take a look at some of the fun outdoor play equipment.

posted by leiyuxin at 2:28 AM EDT | Discussion (1)

July 24, 2019

outdoor playground equipment

What the types of outdoor playground equipment
https://www.wandeplay.com
Nowadays, outdoor play equipment has gradually occupied a place in parks, playgrounds, plazas, etc., and has been widely welcomed by many children. It has even become a way for most children to have fun in their spare time or weekend time. So let's take a look at some of the fun outdoor play equipment.

posted by leiyuxin at 2:28 AM EDT | Discussion (0)

June 23, 2019

According to the PBS documentary NOVA -- Earth's Rocky Start:

* primordial comets & asteroids only possess a "starter kit" of ~250 mineral types

* Earth possesses ~5000 mineral types, of which 2/3rds (3300?) are oxides arising because of our unique oxygen-rich atmosphere, ~250 come from the primordial "starter kit", and the rest (1400?) formed because of the intense pressures within our world

IF so, then even the early pre-biotic earth contained an "extra" 1400 mineral varieties or so, formed from intense planetary pressures

NOW, the pressures within Mars are much much lower than within Earth (1/6th). SO, Mars may have only a small fraction (1/6th) as many "extra" mineral types?

IF SO, then Mars only has maybe 200-300 "extra" mineral types, over and above its "starter kit" of 250 primordial kinds, for a total of around 500 total types?

posted by Erik Nelson at 12:53 AM EDT | Discussion (0)

April 15, 2019

Hungarian Researchers Claim to See Biosignatures in Martian Meteorite

[link]

Dr. Gyollai and co-authors analyzed a thin section of ALH-77005 by optical and FTIR-ATR microscopy.

They were able to detect the presence of coccoidal and filamentous structures (probably built by iron-oxidizing microbes); organic material; biogenic minerals, like ferrihydrite, goethite, and hematite.

posted by noname at 1:04 AM EDT | Discussion (2)

March 15, 2019

Mars Soil For Science Fairs

Hello Fellow Space Explorers

This is my version of Martian regolith simulant JSC MARS-1A.

Martian regolith simulant (or Martian soil simulant) is a terrestrial material that is used to simulate the chemical and mechanical properties of Martian soil for research and experiments

After the Viking landers and the Mars Pathfinder’s rover landed on Mars, the onboard instruments were used to determine the properties of the Martian soil at the landing sites. The studies of the Martian soil properties led to the development of JSC Mars-1 Martian regolith simulant at NASA’s Johnson Space Center in 1998

Using NASA’s soil analysis I formulated my own Mars simulant for my son to use in a Mars science fair project.

The five most abundant ingredients in Mars soil account for almost 95% of the soil. The other 5% is made up of several tiny rare elements that are not easily attainable outside of NASA.

My Mars soils percentages are adjusted to compensate for the 5 % unattainable materials

SiO2 – 54.5%
Fe2O3 – 20.9%
Al2O3 – 8.2%
MgO – 8.7%
CaO – 7.7%

I mix my Mars soil in a clean lab and UV sterilize each batch before and after packing into one pound ziplock bags.

posted by Russell Clark at 8:03 AM EDT | Discussion (0)

January 28, 2019

Fare well

Looks like its over. Many people have been posting here for more than a decade. Some who were here from the beginning are no longer with us. As a scientist I found it doubtful that any part of us continues to exist in some form after we are gone, but if it does, is it not so for the rovers? And if that can be, perhaps there is some metaphysical corner of existence where they all live on together.

So long and thanks for all the fish.

posted by r lewis at 3:17 PM EDT | Discussion (11)

January 21, 2019

Rover Robot equipment

Hi guys, do any of you know anything about Rover Robot ChemCam and other instruments they use on Mars? I am doing a research as part of my studies and I have a short questionnaire I would be thankful if anyone could fill it out for me! Here is the link for it https://goo.gl/forms/rWFdMZUfKwZM7tbu1

posted by Kamile at 4:59 AM EDT | Discussion (0)

January 21, 2019

Rover Robot equipment

Hi guys, do any of you know anything about Rover Robot ChemCam and other instruments they use on Mars? I am doing a research as part of my studies and I have a short questionnaire I would be thankful if anyone could fill it out for me! Here is the link for it https://goo.gl/forms/rWFdMZUfKwZM7tbu1

posted by Kamile at 4:59 AM EDT | Discussion (5)

January 21, 2019

Rover Robot equipment

Hi guys, do any of you know anything about Rover Robot ChemCam and other instruments they use on Mars? I am doing a research as part of my studies and I have a short questionnaire I would be thankful if anyone could fill it out for me! Here is the link for it https://goo.gl/forms/rWFdMZUfKwZM7tbu1

posted by Kamile at 4:59 AM EDT | Discussion (0)

January 21, 2019

Rover Robot equipment

Hi guys, do any of you know anything about Rover Robot ChemCam and other instruments they use on Mars? I am doing a research as part of my studies and I have a short questionnaire I would be thankful if anyone could fill it out for me! Here is the link for it https://goo.gl/forms/rWFdMZUfKwZM7tbu1

posted by Kamile at 4:59 AM EDT | Discussion (0)

December 26, 2018

Jezro Station

As it will be future known, hubcap city, Mars Recon Base.....don't know when....civilian not military....military presence,, political NO......science base,, comments welcome....probably see this in the mid to late 20's
Points>>:
Location
Relatively Flatland
Diverse Strata
Other?

posted by Joe Smith at 1:17 PM EDT | Discussion (2)

November 26, 2018

Insight lander


Business is about to pick-up. Let's hope for a successful landing.

Que the "image guy."

posted by Darwin at 12:27 PM EDT | Discussion (129)

November 26, 2018

Insight lander


Business is about to pick-up. Let's hope for a successful landing.

Que the "image guy."

posted by Darwin at 12:27 PM EDT | Discussion (0)


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