Ella Anderson (Piper) messes up her line but plows on, saying "Jasper, why would you even here?"
Dr. Minyak claims that his heliometer can send Piper to the moon. If literally true, he could legitimately invigorate any space program or, if remaining evil, dominate space travel.
Nothing indicates that Dr. Minyak's balloons are made of indestructible rubber. They should burst on impact with the ceiling, whereby the souped-up gas itself could then break through the ceiling on its own.
Minyak's balloons crash through the ceiling of the Hart home, but the Hart home has two stories and second crashes are never heard.