Made the space core Nyan cat in Minecraft
Here's the gif I worked off.[link]
Unfortunately, there's not a very bit color palette for yellow. Hence my use of sponge, gold and glowstone.
I'm in space.
For those of you out there who don't understand this, watch this youtube video.[link]
Don't watch it if you're in the process of playing Portal 2, because it will be a ***SPOILER*** for you.