Science Animation – Cell to Galaxy Template

A Universe Inside a Cell is a free explainer video template from CoAnimator. A hand-drawn science short where one cell becomes a star, a solar system and a whole galaxy. It runs 46 s at 60 fps in 16:9 (1920×1080), and downloads as an editable .coa project at coanimator.com/templates/a-universe-inside-a-cell.

Download the A Universe Inside a Cell .coa project, open it in CoAnimator and ask your coding agent (Claude Code, Codex or Antigravity) for the change in plain words: new text, your brand colors or a different length. CoAnimator renders the result as an MP4 on your own machine.

Anything in the A Universe Inside a Cell project: the words, colors, fonts, images, timing, length and format. It is built in code, so a coding agent can change any part of it.

Yes. Put your recording on the CoAnimator timeline's audio track and ask your agent to re-time the scenes to your words. CoAnimator can also voice your script with its built-in text-to-speech.

Yes. The A Universe Inside a Cell project includes its sound; ask your agent to swap it for your own music or voiceover, or to remove it.

A .coa file is a complete CoAnimator project in one package: the code, assets and timeline. Double-click it, or choose Open .coa in the CoAnimator launcher. CoAnimator is a desktop app for macOS, Windows and Linux, free to download.