Here is our Space Eagle Total Destruction video walkthrough for Angry Birds Space Cosmic Crystals level 7-19. Fling the Sardine Can north of the main planet, calling for the Space Eagle just before reaching the TNT cache below the gravitational field. To guarantee the feather, use another Sardine Can to destroy the planet at the eastern edge of the level.
If you have an alternate strategy please feel free to leave a detailed comment below.
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1. Fling the Sardine Can around the south of the plant and activate it just to the left of the stone ball. Two pigs in the far upper right remain. Some times landed the can lower left of the ball to push all the debris right and only had the pig on the wood board remain.
2. Land the second Sardine Can in the top left corner (gap) of the right crystal planet between the two pigs.