How to Look for Coronal Mass Ejections (CMEs)
Below is a current coronagraph image of the sun.
First, get familiar with what you’re
seeing: The blue circle in the center is the occulting disk,
which blocks out the sun. The dark diagonal stripe in the bottom
left of the image is the shadow of the arm that supports the occulting
disk. The small white circle shows the size of the sun.
Now look for CMEs, which appear as large white blobs projecting
from the blue disk at the center. If the white blob seems to surround
the blue circle entirely, like a halo, then this coronal mass ejection
is headed toward the earth.
back to cme main page