A solar-powered balloon mission detected a repeating infrasound noise in the stratosphere. Scientists don't know what is making it. When you purchase through links on our site, we may earn an ...

Add Yahoo as a preferred source to see more of our stories on Google. Solar-powered balloons are recording mysterious sounds below human hearing in the stratosphere. The unknown crackling could be the ...

CHICAGO, May 11, 2023 – Imagine if sending your science experiment 70,000 ft in the air just took painter’s plastic, tape, a dash of charcoal dust, and plenty of sunlight. Daniel Bowman of Sandia ...

Daniel Bowman sends cell phones into the stratosphere aboard solar-powered hot-air balloons. You might be surprised what sounds they record up there. These balloons listen to the Earth from a dozen ...