More astrophysics illustrations

Astrophysics

Grand design spiral galaxy

Astrophysics

Argon 37 nucleus

Astrophysics

Electric force vector

Astrophysics

Spacetime grid expanding

Astrophysics

Ellipse

Astrophysics

Radial unit vector r hat

Astrophysics

Visible wavelength band

Astrophysics

Cool dust cloud