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This week... 🔴 @NASAPersevere collects its first Martian rock samples 🚀 @NASAWebb targets a Dec. 18, 2021 launch 👨🚀 @Space_Station crews perform two spacewalks And more! Dive into the details in this new episode of This Week at NASA: https://t.co/t5nTtqBXBJ https://t.co/vNtfCocZ28 — PolitiTweet.org