Question

11. The city on the moon is called
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Answer 1

A ring around the moon is called a lunar halo

Answer 2

Edit

The Artemis Project[1] was a private spaceflight venture to establish a permanent, self-supporting base on the Moon by 2002.[2] It was named after Artemis, the goddess of the Moon and twin sister of Apollo (a reference to the Apollo project). The project's creators, the Lunar Resources Company,[3] formed the Artemis Society as a non-profit NGO in 1994.[4] They planned to cover the costs by exploiting the entertainment value in creating a lunar colony.[1] They also believed that their costs would be a small fraction of what a government agency, such as NASA, would have spent.

The project studied other space colonization projects as well, including colonies on outer planet moons.[5][6]