Can anyone identify this movie?

Someone asked me, I have no clue. All he remembers is one scene featured a guy in an old fashioned deep sea diver’s suit who told some people he had been ‘fired out of a submarine torpedo tube’. Another scene is in space, where astronauts have to cross from one spaceship to another across a…tightrope?..and wiggle their way in through a squishy tube of some type. Last scene, there are two really ugly babies or baby-like creatures in a baby carriage, and a guy looks at them and rears back in surprise.

?