On Friday, Dubrov and his colleague Oleg Novitsky make a spacewalk to connect Nauka module to the US power supply.
"A historic moment — the first grab of the handrail of the MLM [multipurpose laboratory module Nauka]," Dubrov said.
"Yes, this is a historic matter," a specialist from the Moscow region-based mission control agreed.
The Nauka module flew to the ISS in July 2021 with a 14-year delay due to financial and technical problems.