Basis for interest in the atmospheric generator is derived from the Prometheus team arriving inside the 'engineers' temple. The air within was perfect breathable. Will presume the Prometheus outpost was incomplete hence the need for spacesuits outside. Schematics of the completed temple provided basis for the man-made one on LV426.

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Furthermore, just occurred that Weyland-Yutani merger was completed before 2104 as Walter is wearing the WYC logo in Covenant. This opens the possibility that MU-TH-UR 6000 series, "mother", has a Yutani origin. Our antagonist was likely involved in the development mothers special projects capabilities, In other words, maybe Yutani was the evil corporation all along since Peter Weyland didnt come across as such an evil character. The first Yutani-synthetic could have been more like Ash ... hence Bishop referred to them as the older model, Burke notes "Hyperdine system 1282" ... the malicious programming to kill the crew stems from our antagonist's elite engineering team