Vectores de engraved

Winged beast figure

Lotus frieze panel

Cat-headed goddess statue

Egyptian winged figure panel

Projectile path diagram

Gyroscope on a stand

Gridded globe of the Americas

Star field through a telescope

Celestial sphere with the horizon

Equatorial telescope

Orrery arm model

Pair of dividers

Eclipse shadow diagram

Total eclipse corona

Conic orbit curves

Planetary conjunction diagram

Gridded celestial sphere

Seasons diagram

Eclipse of the moon diagram

Moon phase band with a star map

Moon phases 01

Shadow cone diagram

Horizon diagram

Crescent moon and star

Moon phase band 02

Banded planet

Planets in a starry field

Ringed planet 02

Ringed eclipse diagram

Moon phase band 01

Aurora over a starry sky

Burning mirror on a stand

Cone of rays diagram

Refracting telescope 02

Astronomer at a telescope

Refracting telescope 01

Spoked wheel diagram

Orbit of moons diagram 02

Hour dial on a globe

Eclipse of a moon diagram

Comparative planet sizes

Ringed planet orbit diagram

Nebula among stars

Great circles sphere

Aurora arc diagram

Starry arc band

Planet among stars

Hand tracing an ellipse

Ellipse construction diagram

Ray angle diagram

Prism spectrum diagram

Crown inside an armillary sphere

Zones of the globe

Trade winds diagram

Celestial sphere with circles

Horizons seen from a mountain

Comet with a long tail

Planetary positions diagram

Transit of a planet diagram

Orbit projection diagram