Space weather experts in Colorado , US issued a warning on a solar flare . It was the biggest eruption of the year and peaked millions GMT yesterday . It has already caused radio blackouts on Earth and a minor geomagnetic storm could occur tomorrow . This flare was emitted from Active Region 12297 ( AR12297 ) on the sun .
Space weather experts in Colorado , US issued a warning on a solar flare . It was the biggest eruption of the year and peaked 4.22pm GMT yesterday . It has already caused radio blackouts on Earth and a minor geomagnetic storm could occur tomorrow . This flare was emitted from Active Region 12297 ( AR12297 ) on the sun .