Lifeboat Foundation

Once docked, the ISS will “drift down” to 220 km (136 miles) above the Earth’s surface over the following year.

Once in position, the vehicle will fire its 30 Draco engines for a series of burns setting up for a final re-entry burn four days later.

The deorbiting vehicle will be tasked with firing its engines to keep the station on course and powering it when comes into contact with thickening layers of the upper atmosphere during its descent.