Strap-on rocket boosters e óculos: o que têm em comum

1. Passo 1. Strap-on rocket boosters — faz parte de — R-7 rocket. Four first-stage boosters — the “cluster layout”.
2. Passo 2. R-7 rocket — evoluiu de — V-2 rocket. The Soviet rocket programme began by studying the V-2 (the R-1 was its copy).
3. Passo 3. V-2 rocket — tem como parte — Gyroscope. A gyroscopic guidance system.
4. Passo 4. Gyroscope — faz parte de — Space telescope. Pointing gyroscopes.
5. Passo 5. Space telescope — é um tipo de — Telescope. A space telescope is a telescope above the atmosphere, so air does not blur the view.
6. Passo 6. Telescope — evoluiu de — Óculos. The first telescopes were assembled by spectacle makers.

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