NASA’s Ames Research Center in Mountain View, California will host a new high-technology campus for Google. The Internet giant will lease 42.2 acres of land, where it will construct approximately 1.2 million square feet of offices and research and development facilities, the two partners announced.

The 40-year agreement will help Google further enhance its Silicon Valley connections, as Ames Director S. Pete Worden said in a statement. Furthermore, he added, the long-term agreement and expansion of the NASA Research Park supports NASA’s goals in space exploration, scientific discovery and aeronautics research.

This deal will cost Google an initial base rent of $3.66 million per year, money that NASA will use to cover the full cost of the lease and the balance for maintenance, capital revitalization, and improvements of the real property assets at Ames, the two unveiled.

In addition to the 40-year initial agreement, Google will be able to extend the lease by 10 years for a maximum of three times. Two more 10-year extensions will be possible after that, with NASA’s approval. With all extensions taken into consideration, the deal could prolong to a total of 90 years.

During all this time, NASA will be in charge of supervising the project, approving the design, issuing building limits, conducting inspections and monitoring construction during all three phases of the construction.

The actual building process will take another 5 years to start: phase one will begin in September 2013, phase two will begin in 2018, and phase three is planned for 2022.

And as Google wants to make its employees happy too, in addition to the main buildings, they also have plans to construct company housing and amenities, such as parking facilities, dining, sports, child care, conference, as well as recreation, parking facilities and infrastructure for NASA’s use.

The collaboration between NASA and Google goes back to 2005, when they first announced plans to work together on a series of technology-focused R&D activities.