The use of microsatellites has become popular in recent years. Weighing less than 100kg, the development period for microsatellites is about 2 years. Coupled with the fact that their cost is in the hundreds of millions of yen means they can be made much faster and cheaper than conventional large satellites. That is why start-ups in Japan are using microsatellites to launch new businesses that have never existed before. We'll look at the forefront of microsatellite development.