NASA discovered a cave on the moon and there is no need to wear a spacesuit

NASA once discovered a cave on the moon.
These have their climate and there is no need to wear a special suit for this space. Here, a human can wear the usual pants and sweater.

The temperature is varying from +130 to -173 degrees Celsius, and because of this, it’s uninhabitable.
But in the catacombs, the constant temperature is about +17 degrees.

The caves are built from lava tubes. These tubes arose after volcanic eruptions.
The lava tubes could stretch up to 50 kilometers.

These are the oldest and are formed billion years ago.

These are dangerous as they could fit at any time the whole city.
American astronauts are going to check these caves very soon.

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