Serhiy Korolyov

Serhiy Pavlovych

Serhiy Petrovych

Petro Sergiyovych

Stanislav Sergiyovych

Lego

aquatic

space-rocket

ground

Kyiv

Zhytomyr

Zhmerynka

Zhuravka

doctors

teachers

astronauts

inventors

1930

1928

1927

1926

after graduating from flight school

Zhytomyr

after testing the first experimental rockets

after Tsiolkovsky's birthday

after meeting with Tsiolkovsky and studying his ideas

helicopters

machines

bicycles

spaceships

many scientists and engineers

many teachers and engineers

many scientists and surgeons

many engineers and postmen

a thiory

a thory

a thery

a theory

subjects

experiments

discovery

inventions

a inventon

an invintion

an invention

a invention

Botany is the science of plants and their structure.

Botany is the science of plants and man

Botany is the science of animals and plan

Botany is the science of the earth and space.