[NASA] Eruption of Wolf Volcano, Galapagos Islands

In late May 2015, the highest volcano in the Galapagos Islands, Wolf volcano, erupted for the first time in 33 years. The wide image and closeup of Wolf was acquired on June 11, 2015, by the ASTER instrument on NASA’s Terra satellite. The false-color images combine near-infrared, red, and green light (ASTER bands 3-2-1). via NASA http://ift.tt/1LFLHKj

[NASA] Spirals in the D Ring

Although the D ring of Saturn is so thin that it’s barely noticeable compared to the rest of the ring system, it still displays structures seen in other Saturnian rings. via NASA http://ift.tt/1GVgmio

All the Colors of the Sun

It is still not known why the Sun’s light is missing some colors. Here are all the visible colors of the Sun, produced by passing the Sun’s light through a prism-like device. The spectrum was created at the McMath-Pierce Solar Observatory and shows, first off, that although our white-appearing Sun emits light of nearly every color, it does indeed appear brightest in yellow-green light. The dark patches in the above … Read More →