In the lab, a pair of scissors becomes magnetically attached to the spacesuit, yet only a few moments earlier, when Major Andrews tried unsuccessfully to cut the suit using the scissors, there was no magnetic effect on them at all.
The Phantom's spacesuit is highly radioactive, forcing the scientists to handle it with tongs and transport it in a radiation-proof box. Yet back in the lab, and despite the fact that they repeatedly say that the suit's radiation is lethal to humans, they not only keep it out in the open and hold it in their hands wearing nothing more for protection than rubber gloves, but when the suit dissolves they stand breathing in fumes that would necessarily also be fatally radioactive. Also, despite its being so intensely radioactive, the suit doesn't contaminate anything it comes into contact with.
When the visitor materialized in the observatory, it is clearly wearing trunks, which bunch up and gather at the waist and leg openings, but when the visitor falls to its death, the full-length reveal is shown nude. Then, when the onlookers gather around, the waistband of the trunks appears and disappears between shots.