More astrophysics illustrations

Astrophysics

Bohr radius marker

Astrophysics

Refracting telescope

Astrophysics

Radiation zone

Astrophysics

Ellipse semimajor axis

Astrophysics

Surface of venus radar image

Astrophysics

Interstellar dust cloud

Astrophysics

Moon sized planet

Astrophysics

Radio pulse profile