Earth set for impact after four massive explosions on the Sun this week

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The Earth could suffer impacts after four massive explosions were observed on the Sun this week.

NASA's Solar Dynamics Observatory (SDO) captured the rare event at around 3.30am on Tuesday (April 23). Four regions on the sun, separated by hundreds of thousands of kilometres, were seen exploding almost simultaneously. When solar CMEs (Coronal Mass Ejections) occur it can expel billions of tons of solar material into space at high speeds.

When a CME interacts with Earth's magnetosphere, it may cause geomagnetic storms. These storms can disrupt satellite communications, radio signals, and power grids on Earth. They also produce stunning auroras (northern and southern lights) near the poles.

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This week's blasts were on a trajectory south of Earth, but could affect our magnetic field, sparking a G1-class geomagnetic storm. Space-watchers suggest potential impacts from the CMEs could begin today (Thursday). NASA's SDO is a spacecraft mission to observe the Sun's dynamics to "increase understanding of the nature and sources of solar variability".

SDO documents the outer atmosphere of the Sun - called the corona - as well as hot flare plasma.