Black Universe

The Black Universe is older than ours by trillions of trillions of years. It operates under different physical laws, and the stars have long since gone out, plunging the planets into eternal darkness. Russia, the USA, and China are sending research stations to the Black Universe. After several years of flight, NASA astronauts land on a planet whose surface is completely made of mirrors. Then communication with them is lost. A Russian expedition, arriving three months after the Americans, decides to find their colleagues in this hostile black world.