NASA An artist's rendering of NASA's Terra satellite.
NASA A sulfur dioxide plume from fissures is shown in yellow and yellow-green in a May 6 ASTER image of lower Puna. The image is tilted so that it lines up with the map behind it.
NASA A false-color composite image of lower Puna from ASTER taken May 6 depicts vegetation in red, old lava flows in black and gray, ash deposits in green and hotspots in yellow. The image is tilted so that it lines up with the map behind it.
As the lower Puna eruption changes the landscape day by day, a tool used to analyze ice is helping scientists learn more about lava.