Sam The Stuffed Dog Is Missing After Helium Balloon Experiment

A U.K. elementary school sent a stuffed toy soaring into the clouds — in the name of science, of course. 

TOS: A U.K. elementary school sent a stuffed toy into the clouds. 

Meet Sam the Dog. He's the subject of a physics project to see just how high he could float with a helium balloon. 

TOS: Meet Sam the Dog, the subject of a physics project to see how high he could float with a helium balloon. 

The school partnered with a local hotel and SentIntoSpace.com — getting Sam's voyage on film with a GoPro. 

TOS: The school partnered with a local hotel and SentIntoSpace.com — filming the voyage with a GoPro. 

A GPS tracker inside Sam showed he blasted into the sky at a rate of 19.7 feet per second, reaching a height of 15.5 miles, or almost 82,000 feet. 

TOS: A GPS tracker showed Sam traveled at 19.7 feet per second and reached a height of 15.5 miles. 

But the balloon popped during his flight, and now Sam is missing, even though the GPS equipment was located. 

TOS: But the balloon popped, and now Sam is missing. 

The hotel the school partnered with is offering a free stay to the person who finds the stuffed toy. 

TOS: The hotel is offering a free stay to the person who finds the stuffed toy. 

This video includes clips from Sent Into Space and English Lakes Hotels Resorts & Venues.