chunchuntthn
Member
- Joined
- Sep 15, 2018
- Member Type
- Student or Learner
- Native Language
- Vietnamese
- Home Country
- Vietnam
- Current Location
- Vietnam
Please correct my mistakes. Thanks!
A pencil
- During the race go to the space at 1960’s. NASA quickly discovered that a ballpoint didn’t work in zero gravity. NASA spent a lot of time on reseaching a pen that could work outside the earth, and they were successful. It worked not only zero gravity but also underwarter, glass... The pen was developed at a cost of one million dolar.
- SoViet union faced the same proplem. They used a pencil.