Go right. In the room with astronaut's statues remember the colours of these statues: green, red, purple, blue and orange. Go right and talk with the statue. Push the red button in the column on the right side. Go back to the room with astronaut's statues.
Look at ceiling. You need to match colours of five planets (these, which are connected with themselves by orbits) with colours of the statues.
Matching colours of the planets with colours of the statues
Every statue has a crank. When you turn the crank, the planet above the statue will move and also the planet above next statue. There is also a lever, which can change the places of all 5 planets. The basic colours are red, blue and yellow. Others you can make by connecting two colours: green= blue + yellow, purple= blue + red, orange= red + yellow.
If the planet above the statue (e.g. fourth) has basic colour red (you can see orange or purple, what is basic colour you can check by moving the crank of the statue), you may change this basic colour by turning the crank of fifth statue. You can do the same action for the third statue by turning the crank of fourth statue and for the first statue by turning the crank of the second statue.
At first set the red colour of fifth planet (by turning the lever as many times as you need). Then turn the crank of the fifth statue to change the colour of the planet from red to orange. If it's already set orange (after moving the lever only), turn the crank of the fifth statue to check if the basic colour is red. If it is yellow, change it by moving the lever to red and then turn the crank to set orange.
The fourth planet should have basic colour blue. If you see purple or green, turn the crank to set blue.
Now turn the crank of the third statue as many times as you need to set the red colour of second planet (as basic). If you see orange or purple, turn the crank of the second statue to set red.
Then turn the crank of the first statue to change the colour of first planet to green.
Finally turn once the crank of the fourth statue, which change the colour of the third planet to purple. The result is on the screenshot below. You will open the passage in the next room.