Paraglider and optical telegraph: what they have in common

1. Step 1. Paraglider — is made of — Kevlar. The lines are Kevlar or Dyneema.
2. Step 2. Kevlar — is material for — International Space Station. The micrometeoroid shielding is Kevlar and Nextel.
3. Step 3. International Space Station — has part — Solar panel. Solar panels.
4. Step 4. Solar panel — is part of — Space telescope. Solar panels.
5. Step 5. Space telescope — is a kind of — Telescope. A space telescope is a telescope above the atmosphere, so air does not blur the view.
6. Step 6. Telescope — is used in — Optical telegraph. Signals were read through a telescope.

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