Dr Jozef Kozár is an interdisciplinary scientist and writer, studying the planets, Solar System and space exploration missions. He is author of five books, many space technology articles in various popular magazines and also a former public speaker and a documentary movies/TV guest. His research of Mars and the "GNSS for Mars" project became well known especially in 2015, when it attracted many local and worldwide media. More information about Jozef, his research and his books: https://www.jozefkozar.com