Does "our imagination is the only limit" mean ...?
Does "our imagination is the only limit" mean "even our imagination does its best, it(the imagination) is still very limited"?
Context:
Could anything be alive inside these cold but carbon-rich seas? "Titan has been an incredible mind-expander," says Jeff Kargel at the University of Arizona in Tucson. If the moon does host life, he says, our imagination is the only limit to what it could be.
Yes, the implication is like what GPY said, I just want to add what I understand more about the sentence. I think the speaker also implies that it is only in our mind that we make the understanding of life existence on the moon true because there is no other sources proving that... (eg: technology, astronomy, etc.)