Professor Martin Siegert said the aborted mission was "hugely frustrating":
This is of course, hugely frustrating for us, but we have learned a lot this year._
Although circumstances have not worked out as we would have wished, I am confident that through the huge efforts of the field team, and our colleagues in the UK, we have done as much as we possibly could have done, and I sincerely thank them all._
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Bristol's going baa-rmy for Shaun the Sheep - and you're sending us the pictures to prove it! Here are your snaps from Shaun in the City.
Bristol's goes baa-rmy as this summer's Shaun in the City trail kicks off. Plan your quest to find all 70 Shauns with this taster guide.
We've been getting acquainted with the Shaun the Sheep sculptures heading out on location for this summer's trail across Bristol