Thanks to Thomas and others
When Osgood is knocked to the ground, he lands on the floor of the tunnel. After a cut to the explosion, he is shown with his head resting on a rock at the side of the tunnel, with more rocks over his legs.
When Osgood leaves the travel tube, the map is tucked into his belt on his left side. When he arrives at Medical, it is in front (perhaps he used it to find his way to Medical?).
We see Ben Vincent placing the glass dome over heart number 10. In close up, there is a blue lead on the left. In the far view, the blue lead is on the right (it is the opposite way round).
The same thing happens with heart number 11.
And again with the tiranium heart.
In close up we see Osgood take Tony's stun gun. However, before the close up he is not wearing a stun gun, and afterwards he has no holster. Thanks to John Day.
The stuntman's face is visible when the dog attacks Osgood (although he does try to raise his arm to cover his face).
The padding around his forearm is also visible. When the dog leaves, there is no blood. We cut to James Laurenson getting from the floor. His arm is now bloody. He is also further forwards than the stuntman was, closer to the boxes on the right.
Before and during the dog attack, there are no boxes under the 'DANGER' sign. When Osgood rises from the floor, a large number of different boxes have been stacked under the sign and to the right.
Osgood is brought to Medical and reveals his explosive belt. In close up, his head is turned right; in the wider view, his head is turned left.
The edge of the Moonbase cyclorama is visible.
Osgood is remarkably intact for someone buried under rocks- but perhaps they were light pumice-type stones. It is not best practice to put a patient recovering from major surgery next to someone covered in dirt.
When Tony goes to look at the thermometer, his hair changes.
Space 1999 copyright ITV Studios Global Entertainment. Page copyright Martin Willey