Complex sentence: However, both NPO Lavochkin and the Russian Space Agency remain adamant that the launch will proceed on schedule in 2009, confirming the plan once again in a press conference on 5 May, 2009.
Split into simpler sentences: However, both NPO Lavochkin and the Russian Space Agency remain adamant that the launch will proceed on schedule in 2009. The two participants once again confirmed the schedule in a press conference on 5 May, 2009.