Your helium-filled balloon will rise up to the edge of the stratosphere, crossing the boundary into Near Space. 

As the balloon gets higher, the external pressure drops to less than 1% of ground level, causing the balloon to expand to the size of a double decker bus. 

Meanwhile, your Astropod hangs below carrying and protecting your equipment. 

Once the balloon bursts, the Astropod falls at 300km/h before the parachute opens out, slowing the descent to a safe speed of 5m/s. 

After the Astropod lands, your flight computer guides you to the correct location for retrieval. 

 
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