Question

There is no gravity in space so the astronauts didn't use ink pen or fountain pen . Why can't they use pencils

Answer 1

Answer:

To understand why NASA was so keen on a workable space pen, you have to understand that the pencil is not suited for space travel. The problem is that they have a habit of breaking, shattering, and leaving graphite dust behind. The wood, too, can make it a serious fire risk in the pressurized, oxygen-rich capsule.

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