What is the heaviest substance on Earth?
Parallel universes and the theory of the plurality of worlds Many universes
Our place in the universe The location of the earth in the universe
The structure and life of the universe
History of the Christian Church
Discovery of the CMB
The most amazing substances
The James Webb Telescope has a new problem.
Presentation on biology "Modern ideas about the evolution of the organic world" (grade 9)
Where was Byzantium located on the modern world map?
Natural resources of planet earth
Famous creative people: Davydov - poet and warrior