Polyester and r-7 rocket: what they have in common

1. Step 1. Polyester — evolved from — Nylon. The next synthetic fibre.
2. Step 2. Nylon — is material for — Spacesuit. The outer layer is nylon and other synthetic fabrics.
3. Step 3. Spacesuit — is used in — Vostok 1. The SK-1 spacesuit.
4. Step 4. Vostok 1 — uses — R-7 rocket. Launched by a version of the R-7.

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