LifeWiki:Did you know/43
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... that glider constructions for the B29, X66, half-X66 with HWSS, Pushalong 1, 25P3H1V0.2, 30P5H2V0, a pufferfish spaceship, and the weekender were discovered in 2015 -- after fifteen years of intermittent efforts in the case of the weekender?