Poster with the image of communists and capitalistsPoster with the image of communists and capitalists
A three-dimensional picture of the bonds of molecules with highlights on the connection pointsA three-dimensional picture of the bonds of molecules with highlights on the connection points
An astronaut in a spacesuit climbs out of a spaceship against the background of the planetAn astronaut in a spacesuit climbs out of a spaceship against the background of the planet