Orbiting satellite acquired view of an aurora, seen from above, on October 8, 2012. These northern lights resulted from a storm on the sun several days earlier.
Deep in cracks of hot undersea volcanoes, microbes inhale hydrogen and carbon dioxide and exhale methane. They might help scientists understand life beyond Earth.
CME that left sun on October 4, 2012 interacted with Earth's magnetic field, causing beautiful displays of the aurora, or northern lights, on night of October 8-9.
Scientists used tree rings from just eight cedar trees in Bolivia to make a detailed picture of rainfall patterns across the Amazon basin over the last century.