Explanation:

• Russia's Energia space corporation has announced that it is to take the first tourist on a spacewalk in 2023, under the terms of a new contract with a US partner. 
• Energia has signed a contract with Space Adventures. Under this, two space tourists to the International Space Station (ISS).
• Energia announced after NASA signed a deal with Richard Branson's Virgin Galactic space tourism company. The deal is to promote private missions to the station after a special training program in the US.