3D Galaxy Spiral Arms

import matplotlib.pyplot as plt
import numpy as np

fig = plt.figure(figsize=(12, 9), facecolor='#0a0a0f')
ax = fig.add_subplot(111, projection='3d')
ax.set_facecolor('#0a0a0f')

n = 500
t = np.linspace(0, 4*np.pi, n)

# Spiral arms with slight vertical wave
r_outer = 0.5 + 0.4 * t
r_inner = 0.3 + 0.25 * t
z_wave = 0.15 * np.sin(t * 2)

# Two spiral arms
for arm_offset in [0, np.pi]:
    x_outer = r_outer * np.cos(t + arm_offset)
    y_outer = r_outer * np.sin(t + arm_offset)
    
    x_inner = r_inner * np.cos(t + arm_offset)
    y_inner = r_inner * np.sin(t + arm_offset)
    
    ax.plot(x_outer, y_outer, z_wave, linewidth=2, color='#F5B027')
    ax.plot(x_inner, y_inner, z_wave * 0.8, linewidth=1.5, color='#27D3F5')
    
    # Star field
    for i in range(0, n, 8):
        ax.plot([x_outer[i], x_inner[i]], [y_outer[i], y_inner[i]], 
                [z_wave[i], z_wave[i] * 0.8], 
                color='#6CF527', alpha=0.2, linewidth=0.5)

ax.set_xlabel('X', fontsize=11, color='white')
ax.set_ylabel('Y', fontsize=11, color='white')
ax.set_zlabel('Z', fontsize=11, color='white')
ax.set_title('Spiral Galaxy Arms', fontsize=14, color='white', fontweight='bold', pad=15)

ax.tick_params(colors='#888888', labelsize=9)
ax.xaxis.pane.fill = False
ax.yaxis.pane.fill = False
ax.zaxis.pane.fill = False
ax.xaxis.pane.set_edgecolor('#333333')
ax.yaxis.pane.set_edgecolor('#333333')
ax.zaxis.pane.set_edgecolor('#333333')
ax.grid(True, alpha=0.3, color='#555555')

plt.tight_layout()
plt.show()