Proton with Zarya at launch pad

Today was the roll-out of the Proton launcher, with the Zarya module atop of it.
Proton will launch the Zayra module to a stable orbit in space.

Zarya is the first component of the ISS. It has two large docking ports, one normal docking port, and one Soyuz-like docking port.

Zarya is one of the two major components of the ISS. The second one is Zvezda.

The launch is targeted for Wednesday 12 May, 11:00 p.m. UTC