While oxygen, carbon, hydrogen, and nitrogen make up 96% of most human bodies, my body is composed of sulfur, argon, calcium, and samarium.
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#argon
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Replied to Spaceflight 
#Argon is many times cheaper than #xenon (the most common, and expensive, propellant used in #HallThrusters) and #krypton (the propellant #SpaceX used in #Starlink V1 and V1.5 satellites) https://techcrunch.com/2023/03/03/spacexs-acquisition-of-swarm-is-paying-off-with-new-starlink-thrusters
TechCrunch · SpaceX's acquisition of Swarm is paying off with new Starlink thrusters | TechCrunchSpaceX acquisition of Swarm Technologies in July 2021 seems to be paying dividends with the new Starlink argon thrusters.
Replied to Spaceflight
In 
2023, #SpaceX launched the first of its #Starlink V2 Mini satellites 
. These next-generation spacecraft are equipped with #HallEffect thrusters, or #HETs, that operate on #argon, instead of the #krypton propellant on previous Starlinks https://aerospaceamerica.aiaa.org/year-in-review/a-year-of-firsts-for-electric-propulsion
The essential working principle of the #HallThruster is that it uses an #electrostatic potential to accelerate #ions up to high speeds https://en.wikipedia.org/wiki/Hall-effect_thruster#Principle_of_operation
Aerospace America · A year of firsts for electric propulsionThe Electric Propulsion Technical Committee works to advance research, development and application of electric propulsion for satellites and spacecraft.
Welding Wood Is As Simple as Rubbing Two Sticks Together - Can you weld wood? It seems like a silly question — if you throw a couple of piece... - https://hackaday.com/2024/07/21/welding-wood-is-as-simple-as-rubbing-two-sticks-together/ #frictionwelding #biopolymers #stirwelding #science #welding #lignin #vacuum #argon #wood
Hackaday · Welding Wood Is As Simple As Rubbing Two Sticks TogetherCan you weld wood? It seems like a silly question — if you throw a couple of pieces of oak on the welding table and whip out the TIG torch, you know nothing is going to happen. But as [Action…
Low-Cost Cryocooler Pumps Out Cheap DIY Liquid Nitrogen - A word of caution if you’re planning to try this cryocooler method for making liqu... - https://hackaday.com/2024/07/15/low-cost-cryocooler-pumps-out-cheap-diy-liquid-nitrogen/ #chemistryhacks #joule-thomson #compressor #cryocooler #condenser #expansion #ethylene #nitrogen #propane #argon
Hackaday · Low-Cost Cryocooler Pumps Out Cheap DIY Liquid NitrogenA word of caution if you’re planning to try this cryocooler method for making liquid nitrogen: not only does it involve toxic and flammable gasses and pressures high enough to turn the works …
February 26, 2023 #Argon-fueled #HallEffectThruster for #Starlink V2 #satellites : Relative to #krypton, the argon required to fuel Starlink V2 satellites will be practically free. 99.999%-pure argon can be purchased in low volumes for just $5 to $17 per kilogram. Fueling 
its next constellation of almost 30,000 V2 satellites could cost #SpaceX less than fueling 4000 V1 satellites. https://www.teslarati.com/spacex-unveils-next-gen-starlink-v2-mini-satellites-ahead-of-monday-launch
