They have other launch pads and cosmodromes to launch unmanned supply missions which are also used for boosting. They can launch Soyuz-2 rockets from Vostochny, which they chose because they can still reach the ISS from there with a similar payload to Baikonur. Although they never launched a Progress from Vostochny.
They have other launch pads and cosmodromes to launch unmanned supply missions which are also used for boosting. They can launch Soyuz-2 rockets from Vostochny, which they chose because they can still reach the ISS from there with a similar payload to Baikonur. Although they never launched a Progress from Vostochny.