Ms Harrison spotted the reddish hue while driving to work through the village of Bramford, Suffolk, at around 5.15am on Wednesday.
The cleaner posted three photos of her discovery to social media with the caption “guess it is the aurora, not seen one before”.
After attracting hundreds of comments, Ms Harrison was told the “beautiful” glare actually came from Suffolk Sweet Tomatoes’ LED light units, which are used to encourage the growth of its stock.
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Ms Harrison is not the first to make an aurora faux pas. In May, two university students said they were “catfished” into mistaking the purple glow of a Premier Inn hotel for the aurora borealis.
And previously...