This is a three-dimensional trip into a giant "mountain" of cool hydrogen and dust in the Carina Nebula, a vast star-forming region in our Milky Way Galaxy. The nebula is too far away for Hubble Space Telescope to see in true three dimensions. But this visualization creates foreground and background elements based on an approximation of how the region might be distributed in a 3-D volume. A virtual camera flies through this synthesized space to create a 3-D effect. Credit: NASA, G. Bacon, L. Frattare, Z. Levay, and F. Summers (STScI/AURA)