| Behavior | Input | Output |
|---|---|---|
| User can convert age in years to seconds | 50 = 1,577,847,600 | true |
| User can view difference in dates by planet time | venus | |
| User can calculate Mercury age | 50 = 12 | true |
| User can calculate Venus age | 50 = 31 | true |
| User can calculate Mars age | 50 = 94 | true |
| User can calculate Jupiter age | 50 = 593 | true |
| User can check for life expectancy on their planet | Mars = 152 | true |
| User can see if they have passed their average life expectancy | 188 > Mars | true |