Earth orbit is a great place to watch geomagnetic storms. On July 14th, astronauts onboard the International Space Station (ISS) witnessed a broad curtain of green auroras over the southern hemisphere. The display was caused by a solar wind stream which hit Earth's magnetic field on July 12th.
Caption: Space shuttle Atlantis, now docked to the ISS for the last resupply mission of NASA's 30-year shuttle program, was witness to beautiful green curtains of aurora over the Southern hemisphere. In addition to aurora, the picture also frames Atlantis's port side wing and a segment of the boom sensor system attached to the shuttle's robotic arm.