Jeff Bezos unveiled a lunar lander designed by his company Blue Origin, another step toward the billionaire entrepreneur’s goal of creating the infrastructure for millions of people to live and work in space.

Bezos said the enormous lunar lander could deliver 6.5 metric tons (7.1 tons) to the surface of the Moon. He didn’t set a date for a mission, but said that the engine for the lander will be tested this summer, and that the vehicle could be upgraded to carry humans as part of NASA’s push to return to the Moon by 2024.

Bezos, who started Blue Origin in 2000 with the wealth generated by Amazon, has long advocated for more human activity in space, but this marks his most comprehensive attempt to explain and justify what he has called his most important project.

Read the full report from Quartz.

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