Sun fires off 3 solar flares; spacecraft at risk

By Denise ChowSpace.comThe sun has unleashed a trio of solar eruptions toward the planet Mercury in recent days, solar storms that may pass one NASA spacecraft while dealing a glancing blow to another, NASA officials say.The three flares erupted from the sun over the span of two days, and belched waves of plasma and charged particles -- called coronal mass ejections (CMEs) -- that are now heading to...