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NASA engineer Ernie Wright looks on as the first six flight ready James Webb Space Telescope's primary mirror segments are prepped to begin final cryogenic testing at NASA's Marshall Space Flight Center
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A video explaining the basic concept of 'continuous sidewalks' that are used extensively in countries like the Netherlands and Denmark, being safer and more consistent with sustainable transport goals.
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अपनसबक मासिक विषयगत चुनौतीसँ निपटय लेल, प्रेरणा लेबय लेल आ नव-नव विषयके आजमाबय लेल किछ तस्वीरसभ खीचू आ अपलोड करू! चुनौतीके बारेमे बेसी जानू! Highlights
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