Three amateur scientists are asking for their giant balloon back after it blew off course, while taking photos of Kent from near space.
Jerry Sandys, Pete Gibbs and Andrew Ashe fly meteorological balloons to take pictures of the UK.
But yesterday they "got their sums a little wrong", and the balloons payload - a small white polystyrene box - landed in the sea two miles off Dungeness Point, just after 9am.
Having spent three hours searching in a fishing boat, they were unable to find the box, and are now hoping someone discovered it attached to a pink parachute, washed up on the beach.
The flight was "otherwise a success" they said, covering over 160km and reaching an altitudeof 26km.
The balloon even sent the them a text message just as it came down, so they knew exactly where it landed.
If anyone has seen it, they are asked to call Andrew Ashe 07976 740233 or to firstname.lastname@example.org. A reward of a signed photo from space is being offered to the finder.