Kontaktlinse und r-7 rocket: was sie gemeinsam haben

1. Schritt 1. Kontaktlinse — entwickelte sich aus — Brille. A lens right on the eye.
2. Schritt 2. Brille — entwickelte sich zu — Telescope. The first telescopes were assembled by spectacle makers.
3. Schritt 3. Telescope — umfasst — Space telescope. A space telescope is a telescope above the atmosphere, so air does not blur the view.
4. Schritt 4. Space telescope — hat als Teil — Gyroscope. Pointing gyroscopes.
5. Schritt 5. Gyroscope — ist Teil von — V-2 rocket. A gyroscopic guidance system.
6. Schritt 6. V-2 rocket — entwickelte sich zu — R-7 rocket. The Soviet rocket programme began by studying the V-2 (the R-1 was its copy).

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