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Rare proton arc over Canada

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October 6, 2016

Dave Markel captured this proton arc near Kamloops, British Columbia, Canada, on September 28, 2016. — Proton arc captured using a Nikon D300 with Tokina 11-16mm f/2.8 lens. EXIF: 11.5mm – F/2.8 – 30 sec – Iso 2000. Photo by Dave Markel.

Dave Markel wrote that – while aurora chasing – he captured this proton arc near Kamloops, British Columbia, Canada, on September 28, 2016. This photo is a five-image composite of the event.

Thank you, Dave!

A proton arc is indeed rare. Although many experts say they’re caused by protons from the sun (giving them their name), other experts disagree. You can read more about what might, or might not, cause proton arcs at Spaceweather.com.

Bottom line: Proton arc over Kamloops, British Columbia, Canada in September 2016.

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October 6, 2016

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Deborah Byrd

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Deborah Byrd (asteroid 3505 Byrd) helps edit EarthSky.org and is a frequent host of EarthSky videos. Deborah created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Prior to that, she had worked for the University of Texas McDonald Observatory since 1976, and created and produced their Star Date radio series. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named in her honor in 1990, a Public Service Award from the National Science Board in 2003, and the Education Prize from the American Astronomical Society in 2020. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.