MR-20 is a Russian sounding rocket. Russia (Россия Rossiya) or the Russian Federation ( Rossiyskaya Federatsiya) is a transcontinental Country extending A sounding rocket, sometimes called a research rocket, is an instrument-carrying Rocket designed to take measurements and perform scientific experiments during The MR-20 is 9 meters long, has a diameter of 45 centimeters, and can bring a payload of 130 kilograms to a height of 250 kilometers.