This satellite image shows volcanic features on the summit of Redoubt Volcano, Alaska. Scientists believe an eruption at the volcano is likely in the coming weeks and months.
One of the most consistently active volcanoes in the world, Sicily’s Mount Etna has a historical record of eruptions dating back to 1500 BC. This astronaut photograph captures plumes of steam and possibly ash originating from summit craters on the mountain: the Northeast Crater and Central Crater, which includes two secondary craters (Voragine and Bocca Nuova).