This was announced by the general director of Roscosmos Dmitry Rogozin in his Twitter account.

“At 02:30 Moscow time, the transportation of the Proton-M space rocket with the Nauka module to the launch complex began at Baikonur,” he wrote.

The Nauka multifunctional laboratory module is supposed to be launched to the ISS using the Proton-M rocket on July 21, the reserve launch dates are July 22 and 23.

Earlier it became known that the "Science" module can produce oxygen for six people. With such a module, astronauts will receive a second toilet, a cabin for a third crew member and the European manipulator ERA - it will allow them to perform some work without going into outer space.