A dazzling aurora light show amazed skywatchers across North America, from Canada to Arkansas, and other northern regions Monday night (Oct. 24), painting the sky with striking green and even rare red hues.
The aurora display, also known as the northern lights, was touched off by a wave charged particles unleashed by a massive sun storm on Saturday, which took two days to reach Earth, according to the Space Weather Prediction Center operated by the National Weather Service and NOAA.
"These were the most vibrant I've ever seen," Canadian skywatcher Colin Chatfield of Saskatoon, Saskatchewan told SPACE.com in an email. "I was also able to see red with the naked eye, which I've never seen before either. Simply put, they were amazing."
Space weather officials said the arrival of the solar particles Monday triggered a geomagnetic storm that amped up the aurora displays. The sun is currently in an active phase of its 11-year solar weather cycle.
"Couple that with the fact that large parts of the U.S. had very clear skies, and you've got some beautiful sightings of the aurora across the northern tier of the U.S.," Space Weather Prediction Center officials wrote in an update. Unfortunately for sky watchers, the geomagnetic storm appears to be in decline and no further significant space weather is expected at this time."
