Format of each drawing: 21 x 29,7 cm, pencil & typewriter on paper, year unknown.

Moving star cluster (with convergence point)

Meteor shower (score)

Interstellar clouds
 

Pluto has a moon.

Meteor shower

Sombrero galaxy

Diagram.

Diagram.

Sound diffusion

Models of collaps

Diagram.

Rotation of Venus (score)
 

Diagram.

Diagram.

Ring system of Saturn

Planet Pluto (score)

Galactic magnetic field

Galaxy (with sun)

Galaxy (with sun)

Pulsation frequency

Orbit of Eros