Example output:
danielhavercroft@Daniels-MacBook-Pro nasa_api_hackathon % python3 main.py
Enter start date: 2022-02-16
Enter end date: 2022-02-18
Enter API key: REDACTED
Data fetched from API successfully...
There were a total of 35 NEOs between 2022-02-16 and 2022-02-18.
The average size of an NEO between 2022-02-16 and 2022-02-18 was: 225.92969463588287