APOD 4.8: The Sky from Mauna Kea

Looking out over the volcano Mauna Kea, we see a blanket of white clouds, and on the far left, glow from a Hawaiian city. The volcanic lava lights up orange from an erupting Kilauea, just left of the center. The summit of a more distant volcano, Mauna Loa, is visible in dark silhouette near the middle of the horizon. Green airglow is visible above the clouds caused by air molecules excited during the day. The Milky Way galaxy also extends up straight through the middle.