On the delivery of people and cargo into space
The construction of a Martian colony will require 1 million tons of cargo. It is this reserve that will make it possible to create a self-sufficient colony on the Red Planet. And space is not limited to Mars alone.

If in the future it is possible to reduce the cost of delivering goods to space, the idea of creating permanent colonies on the planets will turn out to be quite realistic.
Elon Musk: Starship will reduce the cost of delivering goods into space dozens of times - up to $ 100 per kilogram and even lower
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Low quality of construction
Houses were massively built with violations

The reason for such destruction is the lack of supervision, as the construction process has become a tool for making money
In Turkey, found defects in the structures of houses destroyed during the earthquake
Russian rescuer told about the terrible quality of collapsed houses in Turkey
Why Houses in Turkey Fold Like Houses of Cards
Accuracy 30
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Judging by the spectral analysis of some celestial bodies - nickel and iron
Class C asteroids. Color: grayish. They consist of carbon and a number of other substances, including silicon. This is the most common type, which includes about 75% of all asteroids.Asteroids of the S class. Color: greenish or reddish. They consist of silicon, nickel and iron. The second most common type includes about 17% of all asteroids.Asteroids of the M class. Color: reddish. They consist of nickel and iron.

It is planned to first mine metals on asteroids, and then start mining on planets
Storerooms of metals on asteroids: how do they want to master mining in space
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Because there are competitors
China plans to start manned flights to the moon and build a lunar base by 2030

China is a contender for winning the second lunar race (for the creation of the first lunar base and the resumption of manned flights to the moon after more than half a century of break) in case of failure or delay in similar plans of the United States, Russia, EU, Japan, India.
China space program
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