NASA’s Parker Solar Probe has become the first spacecraft ever to fly through a coronal mass ejection from the sun—a powerful eruption of billions of tons of plasma.
Nour Raouafu, a Parker Solar Probe project scientist at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland. “We’ve never seen an event of this magnitude at this distance.”
CMEs are large expulsions of plasma and magnetic field from the sun that often form in the wake of solar flares. Both have their roots in the twisting and realignment of the sun’s magnetic field. When directed towards Earth, a CME can cause a geomagnetic storm that can change the shape of our planet’s magnetic field, leading to spectacular displays of aurora. However, severe examples could also harm satellites, disable communications systems and cause continent-wide blackouts.
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