It must be Summer there... apparently it gets up as high as +20C (68F) on Mars. Unfortunately the lows around -150C (-238F) are uninhabitable.
Around here (Northern BC, Canada) it often gets to -40C (also -40F), and nothing works well. Plastic items often shatter, tires get flat spots on the bottom. I can't imagine how they make Mars Rovers and stuff like that, that actually work at -150C. They must use totally metals, and talc as a lubricant.
Engine oil and grease are ineffective below -35C (-30F). I often wondered how they lubricate things in space.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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