He chose Legos.
Button, who is a Mormon, used nearly 83,000 of the little plastic bricks in the mosaic.
"I have always been awestruck by the image and am deeply impressed with the beauty and order and regeneration of the universe," Button said of choosing "Pillars of Creation."
The photo -- and Button's Legos mosaic -- shows the "Pillars of Creation" portion of the Eagle Nebula, which is is 6,500 light-years away in the constellation Serpens, and the pillars are a dramatic display of the birth of new stars and the creation of new solar systems. The pillars themselves are dense columns of cool interstellar hydrogen gas and dust. As the densest regions gravitate mass unto themselves, embryonic stars are formed, which begin to emit intense light. This is most evident in the brightest areas of the photo at the tops of the pillars.