"The WISA Woodsat is a 4-inch (10-centimeter) square satellite" https://www.cnet.com/news/first-wooden-satellite-in-the-world-aims-to-prove-plywood-can-survive-space/ Check out the photo captioned "A camera on the test model of Woodsat captured this view of the weather balloon exploding as expected during a June 12, 2021 stratospheric test flight."