An unusual greenish shimmer spotted in the skies above Hawaii has sparked interest among scientists, authorities, and locals after footage emerged showing glowing bands extending along the horizon during sunset. Initially reported by KHON, this phenomenon appeared on two successive nights, prompting inquiries from military and transportation officials who could not readily explain the sighting.
Mysterious Phenomenon Prompts Investigation
At Keahole Point, observers noticed a vivid green illumination at sunset over consecutive evenings. Local resident Jake Asuncion captured the phenomenon on video, which quickly spread and led to questions from nearby Army personnel, the Department of Transportation, and an observatory, none of whom could immediately determine its cause.
Asuncion only became aware of the anomaly when reviewing his footage later.
“I got home, I was going to post it, and then towards the end of the video I saw the green come out—I said, what was that?” he explained. Intrigued, he returned the following night. “I wanted to go back the next night and see if I could capture the same thing—and it came out even more the second night,” he said.
Early theories ranged from satellites to auroral activity. However, satellites generally manifest as small pinpoint lights moving steadily, not large rolling bands. Meanwhile, auroras are rare in Hawaiian latitudes and require intense solar disturbances. As expert Bradley pointed out:
“It looked very interesting—the green color looks like aurora, but honestly, we don’t really get that in Hawaiʻi.”
KHON Attributes Phenomenon to Rare Airglow Patterns
According to KHON, the most convincing explanation is a phenomenon known as airglow. This faint luminescence occurs in Earth's upper atmosphere when oxygen atoms excited by ultraviolet solar radiation emit visible green light about 60 miles above the ground.
Unlike auroras, which are caused by energetic particles interacting with Earth's magnetic field, airglow is a persistent but very dim effect that usually escapes human detection. Only specialized cameras or long-exposure photos can reveal it under typical conditions.
In this instance, gravity waves within the atmosphere—slow ripples formed by disturbances such as storms or terrain airflow—may have organized the airglow into notable bands visible on camera.
Why This Glow Is Camera-Exclusive
One fascinating fact about this green display is its invisibility to the naked eye despite being vividly recorded on video. Human vision is not sensitive enough to perceive the low light levels where airglow occurs, but cameras, especially those designed for low-light capture, can accumulate light over time to reveal otherwise hidden details. This explains why Asuncion only noticed the green bands after reviewing his recordings.
Similar green sky bands have been documented previously, such as in Kansas (2001) and Chile (2016), under matching atmospheric circumstances. Astronauts aboard the International Space Station have also captured green and red airglow rings encircling Earth, underscoring this phenomenon’s global presence.
Researchers Urge More Observations to Understand Event
Although airglow is the favored explanation, scientists emphasize the need for additional observations since such events are rarely recorded in populated areas, leaving scientific understanding incomplete. Experts encourage increased public awareness and reporting to improve data collection.
“I would love more eyes on it—more data, the better,” said Bradley, highlighting the value of citizen science alongside satellite and atmospheric measurements.
He dismissed other common causes, noting: “Satellites look like small pinpoint lights moving across the sky—we see them every night. This doesn’t look like that.”
This Hawaiian sighting reminds us that even well-known skies can reveal subtle atmospheric activities when viewed with the right technology, uncovering processes that operate quietly above us yet often go unnoticed.
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