A galactic spectrum. 🌈 ⁣ ⁣ The Pinwheel Galaxy is about 70 percent larger than the Milky Way galaxy at a diameter of about 170,000 light-years. It’s located at 21 million light-years from Earth in the constellation of Ursa Major (also known as the Big Dipper). ⁣ ⁣ This image combines data from four of our space telescopes, which allow astronomers to analyze features using multiple parts of the spectrum. The yellow shown here is visible light seen from NASAHubble. In red, the Spitzer Space Telescope shows red colors of infrared light emitted where stars are forming. NASAChandraXRay captures the hottest area, shown in purple, where we see exploded stars, gas, and material colliding with black holes. Finally, the blue areas are where Galaxy Evolution Explorer depicts ultraviolet light projected by hot young stars. ⁣ ⁣ Image description: A spiral galaxy with yellow, red, purple and blue stars at the center and along its spiral arms. The blue stars at the end of the spiral arms are fading ...