Sunday, February 5, 2017

Solar Coronal Hole Persists


A substantial coronal hole rotated across the face of the sun this past week and is again streaming solar wind towards Earth (Jan. 30 - Feb. 2, 2017). This same coronal hole was facing Earth about a month ago and has rotated into a similar position again (see our Gallery entry for this here:

Coronal holes are areas of open magnetic field from which solar wind particles stream into space. In this wavelength of extreme ultraviolet light it appears as a dark area near the center and lower portion of the sun. Credit: Solar Dynamics Observatory, NASA.


No comments:

Post a Comment

Note: Only a member of this blog may post a comment.