Cold dust: Researchers think studying vast stretches of what they call "giant filaments of cold dust," could help to determine the forces that shape our Galaxy and trigger star formation. The European Space Agency's Planck satellite spotted what ESA calls the filamentary structure of dust in the solar neighborhood within about 500 light-years of the Sun. The local filaments are connected to the Milky Way, which is the pink horizontal feature near the bottom of the image. The image shows white-pink tones where the dust is few tens of degrees above absolute zero, whereas the deeper colors are dust at around minus 261°C. The warmer dust is concentrated into the plane of the Galaxy whereas the dust suspended above and below is cooler, ESA says.