A coronal mass ejection is headed for Earth:

“Yesterday, a medium-sized solar flare erupted from a sunspot group near the

middle of the solar disk. It was accompanied by a

coronal mass ejection (CME) that appears to be

headed directly for our planet.

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There’s no cause for

alarm — CMEs aren’t dangerous to people — but this

one could trigger beautiful aurorae and other

geomagnetic activity when it passes by our planet

around February 20.” [via Abby, thanks]