The acoustic micrometeorite detector detected 145 impacts of cosmic dust in 78,750 seconds. Instrumentation consisted of a cosmic ray detection package and a ring of micrometeorite erosion gauges. Russell is leader of the micrometeorite and meteorite collection at the Natural History Museum, London. Four barium titanate-type microphones recorded micrometeorite impacts on the satellite's surface. The probe differed from Venera 2 in not having a micrometeorite detector. The micrometeorite detector and sun scanner were mounted on the sphere. The micrometeorite detector and sun scanner were mounted on the sphere as well. Micrometeorite shielding is incorporated into the station to protect pressurised sections and critical systems. A micrometeorite is a micrometeoroid that has survived entry through the Earth's atmosphere. The micrometeorite detector was mounted on the sphere as well.