IMG_20180210_133358 Center For Inquiry Darwin Day cake, 6 of 6
IMG_20180210_133358 Darwin Day cake "The Young Darwin"
P1070046 Bob Mahoney explains orbital mechanics
The two hula hoops are possible orbits of a hypothetical spaceship orbiting the globe. Read more about the Orbital Mechanics panel in my blog. Read more about ArmadilloCon 2009 in this series of blog posts.