The caption to the photo indicates that the diameter of the hole in the radiator of the thermal control system is 12 mm. The image itself was taken from the ISS.
Roskosmos also posted a video of the refrigerant leak.
According to preliminary information, the damage to the Progress MS-21 was caused by external influences. The state corporation intends to carry out a series of experiments on land to simulate damage.
In February of this year, Progress experienced a refrigerant leak from the thermal control system. For security reasons, the ship had to be isolated from the total volume of the ISS. The space truck was then undocked from the station and sunk in the Pacific Ocean.