After emitting its first significant solar flares since June 2013 earlier in the week, the sun continued to produce mid-level and significant solar flares on Oct. 27 and Oct. 28, 2013.
Researchers believe they've found a way of predicting solar flares more than a day before they occur, possibly helping to protect satellites, power grids and astronauts from dangerous radiation.
Predicting solar flares is going to become increasingly important as the sun hits the most active phase of its 11-year cycle.
The world's first space weather forecasting system is about to go into operation.
The new Solar Dynamics Observatory (SDO) could be as important to science as the Hubble Space Telescope, says NASA, as it releases its first close-up pictures of the sun.