A Russian Soyuz capsule carrying three astronauts will dock with the International Space Station this morning at 3:42AM ET. Live coverage of the event starts at 3AM ET. Afterward, the hatch between the Soyuz and the station will open at 6:15AM ET.
The docking will bring Sergei Volkov, Andreas Mogensen, and Aidyn Aimbetov aboard the station. The trio launched on top of a Soyuz rocket from Kazakhstan early Wednesday. Their addition will make the ISS unusually full; a total of nine people will be on board. The astronauts had to rearrange a Soyuz capsule already docked with the ISS to prepare for the new arrivals.
The living arrangements won't last long. Volkov will stay on the ISS for the next six months, but Mogensen and Aimbetov will return to Earth on September 12th.