NASA has said that the Sun has unleashed a medium-sized solar flare on Tuesday, which will hit Earth in the next 24 hours.
The large cloud of particles mushroomed up and fell back down looking as if it covered an area of almost half the solar surface.
NASA said the coronal mass ejection (CME) should deliver a ‘glancing blow’ to Earth''s magnetic field during the late hours of June 8th or June 9th.
High-latitude sky watchers have been warned to be alert for auroras when the CME arrives.
The Solar Dynamics Observatory (SDO) observed the flare''s peak at 1:41a.m. ET (0641 UT).
Scientists say it is somewhat unique because at many places in the eruption there seems to be even cooler material -- at temperatures less than 80,000 K.