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C:\Users\> cd NASA

C:\Users\NASA Welcome !!!

C:\Users\NASA> ls

Artemis 1 ;Parker Solar Probe ;Apollo program;Project Gemini ...

C:\Users\NASA> cd Parker Solar Probe

C:\Users\NASA\Parker Solar Probe Preparing for launch ...

C:\Users\NASA\Parker Solar Probe> Start Alliance Delta IV Heavy rocket

Rocket is ready to launch !!!

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Take off !!!