#0885
To Build A Universe
Using a playful analogy that starts with Carl Saganâs quip about baking an apple pie to âinvent the universe,â the post explains how simple 3âD objects such as apples can represent everything from stars and nebulae to planets and moons, while pointing out that astrophotography adds color layers to reveal motion (redshift vs. blueshift) and depth. It then walks through cosmic evolutionâhydrogen gas collapsing into starâforming clouds, supernova dust giving rise to planetary disks, and the eventual assembly of bodies ranging from large planets to small asteroidsâand ends with the idea that one could paint a whole universe by rendering these objects as apples in a 3âD scene. Links to the appleâpie video, Wikipedia on astrophotography, a redshift/blueshift diagram, a YouTube video on life, and a timeâlapse clip round out the illustration.






















