Mission Control Upgrade 5 days ???

The nextcolony game seems to be a game where you have to explore and find many planets.
Only one probe can be sent. Upgrading mission control can send many probes at the same time.
This is a very important skill because you can find multiple planets at the same time as the mission control skill is upgraded.

I gathered resources for a few days and upgraded my mission control skills.

I thought that the upgrade would be complete after 5 hours, but it was not.
We need 5 days instead of 5 hours.
It is a skill that requires too long time and is a very important skill.

In a few days I will be able to explore several planets at the same time.
How many resources do I need to upgrade Mission Control?