Astronomical Guide to Visegrad Countries will be launched in 2023. In the meantime we invite you to participate in the contest in Poland, Czechia, Hungary and Slovakia.

Astronomical Guide to Visegrad Countries will be launched in 2023. In the meantime we invite you to participate in the contest in Czechia, Hungary, Poland and Slovakia.

Astronomical Guide to Visegrad Countries will be launched in 2023. In the meantime we invite you to participate in the contest in Slovakia, Czechia, Hungary and Poland.

Astronomical Guide to Visegrad Countries will be launched in 2023. In the meantime we invite you to participate in the contest in Hungary, Czechia, Poland, Slovakia.