What question did this study set out to answer?

The aim is to detect infrasound generated by fireworks in the upper mesosphere and lower thermosphere using rocket-borne sensors.

First Detection of Firework‐Generated Infrasound in the Upper Mesosphere–Lower Thermosphere With a Rocket‐Borne Sensor: Results From the MOMO3 Sounding Rocket Experiment

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First detection of firework infrasound in the upper mesosphere and lower thermosphere, suggesting significant acoustic propagation capabilities.

The aim is to detect infrasound generated by fireworks in the upper mesosphere and lower thermosphere using rocket-borne sensors.
Installed a capacitive differential pressure sensor on the MOMO3 rocket.
Launched ten spherical fireworks to provide acoustic sources before and after rocket liftoff.
Conducted three-dimensional ray-tracing simulations to analyze acoustic ray paths in relation to the rocket trajectory.
Detected four distinct pressure transients at 50–76 km altitude during ascent, corresponding to firework launches.
Observed two weaker peaks at 106–109 km during descent, classified as marginal due to low signal quality.
Additional ascent-phase transients lacked expected ray intersections, indicating possible unmodeled sources or propagation.

Saito et al. (2026) studied this question.

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First detection of firework infrasound in the upper mesosphere and lower thermosphere, suggesting significant acoustic propagation capabilities.