Explanation:
It seemed like night, but part of the sky glowed purple.
It was the now famous night of May 10, 2024, when
people over much of the world reported beautiful aurora-filled skies.
The featured image was captured this night during early morning hours from
Arlington,
Wisconsin,
USA.
The panorama is a composite of several 6-second exposures covering
two thirds of the visible sky, with
north in the center,
and processed to heighten the colors and remove electrical wires.
The photographer (in the foreground) reported that the
aurora
appeared to flow from a point overhead but
illuminated the sky only toward the
north.
The aurora’s energetic particles originated from
CMEs
ejected from our Sun over sunspot
AR 6443 a few days before.
This large active region
rotated to the far side of the Sun last week, but
may well survive to
rotate back toward the
Earth next week.
Source: https://apod.nasa.gov/apod/ap240520.html
