I think I failed the project because I cannot rotate the 3D image generated in the end. It might be because I code this Jupyter notebook inVS Code? 
%matplotlib notebook
%matplotlib inline
from matplotlib import pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
# Orion
x = [-0.41, 0.57, 0.07, 0.00, -0.29, -0.32,-0.50,-0.23, -0.23]
y = [4.12, 7.71, 2.36, 9.10, 13.35, 8.13, 7.19, 13.25,13.43]
z = [2.06, 0.84, 1.56, 2.07, 2.36, 1.72, 0.66, 1.25,1.38]
fig = plt.figure()
ax = fig.add_subplot(1,1,1)
ax.scatter(x,y)
plt.show(block=True)
fig_3d = plt.figure()
ax_3d = fig_3d.add_subplot(1,1,1, projection='3d')
constellation3d = ax_3d.scatter(x,y,z)
plt.show()