Curiosity Mars rover clicks rare sunspots

Washington, July 13: NASA's Curiosity Mars rover has provided images of sunspots from the other side of the Sun that is turned away from Earth. While investigating bedrock types on Mars' Mount Sharp and preparing for a drill test, Curiosity tracked large sunspots from the opposite side of the Sun. "Tracking the sunspot activity on the far side of the sun is useful for space-weather forecasting," said Yihua Zheng, project leader for NASA space weather services. "It helps us monitor how the sunspots evolve and grow before they become visible from this side," he added. Scientists temporarily have no other resource providing views of the Sun from the opposite side of the solar system from Earth. The sun completes a rotation about once a month -- faster near its equator than near its poles. "Information about sunspots that develop before they rotate into view of Earth and Earth-orbiting spacecraft is helpful in predicting space-weather effects of solar emissions related to sunspots," the US space agency said in a statement. NASA's STEREO-A spacecraft, which monitors the Sun, is currently almost exactly behind the Sun from Earth's perspective and is temporarily out of communication.