Astronomy Picture of Day: Rays in Aurora# Astronomy - 天文
s*t
1 楼
Rays from an Unexpected Aurora
Credit & Copyright: Lyndon Anderson (Prairie Journal)
Explanation: This aurora was a bit of a surprise. For starters, last Friday morning, no intense
auroral activity was expected at all. Possibly more surprising, however, the aurora appeared to
show an usual structure of green rays from some locations. In the above image, captured from
North Dakota, USA, a picket fence of green rays stretches toward the horizon. Mirroring the
green
Credit & Copyright: Lyndon Anderson (Prairie Journal)
Explanation: This aurora was a bit of a surprise. For starters, last Friday morning, no intense
auroral activity was expected at all. Possibly more surprising, however, the aurora appeared to
show an usual structure of green rays from some locations. In the above image, captured from
North Dakota, USA, a picket fence of green rays stretches toward the horizon. Mirroring the
green