Unknown Russia: Probing The Heavens

Unknown Russia travels to Nizhny Arkhyz, high in the Caucasus Mountains, to see Ratan-600, the world's largest radio telescope, and BTA-6, a gigantic optical telescope considered a scientific marvel. The Soviet-era astrophysical observatory that contains the two telescopes supplies most of Russia's information about optical and radio astronomy, according to the Russian Academy of Sciences, but, today, struggles to overcome financial constraints.