The author proposes extensions to the Scrum process model to add formal requirements and test case management, with requirements and test case work items that have their own state transition (e.g. âNot Implementedâ, âPartially Implementedâ, âFully Implementedâ).
In order to calculate the time of travel with this speed from Earth to Mars, we need to know the distance. When the Mars and the Earth are at the opposite sides of the Sun, the distance is the largest: approximately: 378 million km. The time needed for an electromagnetic wave to cover this distance is approximately: 21 minute. The closest distance between Mars and Earth is 78 million km, the time in this case is: 4.3 min.
If it takes 10 months to reach Mars then it takes: 0.066667 light hours 0.00027778 light days, and taking days in a year to be 365.25 (.25 for the leap year): So there are 0.00000076051 light years between Mars and the Earth (assuming it takes 4 minutes for light to travel from one to the other).