Maybe he did not consider our little bubble to be a true spacecraft.

I just wanted my brother to come into this little weird bubble I'm in for an evening.

Except inside the little bubble of my shield, there was.

But he should be able to feel little bubbles escaping, in that case.

The little red bubbles broke, but new ones came up on her hot skin.

It was just a little 'bubble' of our own universe and its laws that we brought along with us.

You could even hear the little light bubbles in the glass balloon.

I like the little bubble coming in off the right.

"Everyone just goes round the world in their little bubble."

Then someone noticed a little bubble on the arm of the piano.