People here mentioned undoubtedly legendary spacecraft. I could continue this list, but I don't want to. I had always wondered why we always remember only well-known companies and spacecraft? Wouldn't it be better to broaden our horizons and make startups public? Many new endeavors are worth the attention of engineers and investors.
Skylark Micro is a spacecraft I want to tell you about. This prototype is used for testing the electrical and communication systems, construction materials. The company itself states that Skylark Micro can investigate the conditions in the atmosphere and be used for educational purposes. We often underestimate the significance and role of test samples, and it's awful. Unfortunately, I can't attach the image, but I attached the link so everyone who's interested can visit the company's website and find all necessary information.