Copyright Space.com
Astrophotographer Mark Johnston has captured a mesmerizing view of the sun, this time showing a cloud of hydrogen plasma twisting and dancing above the solar surface, suspended by powerful magnetic fields. The incredible close-up, taken on Oct. 20, 2025, from Willow Springs Lake, Arizona, compresses 75 minutes of real-time solar activity into a hypnotic 6.5-second timelapse animation that's been looped. The extraordinary footage reveals a delicate, thread-like prominence as it hovers above the solar surface. "The video shows a cloud of hydrogen plasma suspended above the sun's limb on magnetic fields," Johnston told Space.com. "I have a new upgrade on my solar etalon filter and when the seeing is good, I'm getting some fabulous results". A solar prominence, also known as a solar filament when seen against the solar disk, is a large bright structure extending from the sun's surface. The red glowing material is plasma, a hot gas made of charged hydrogen and helium, which flows along twisted magnetic field lines generated by the sun's internal dynamo. When these magnetic structures become unstable, the prominence can erupt, hurling plasma out into space. They are anchored to the sun's photosphere and extend into its hot upper atmosphere, known as the corona. Prominences can form over about a day and can persist for weeks or even months, looping hundreds of thousands of miles into space, according to NASA. To capture the footage, Johnston used a TEC160FL refractor equipped with a Baader Energy Rejection Filter, Baader 4ZS telecentric, Solar Spectrum 0.3Å hydrogen-alpha etalon, Lunt hydrogen-alpha etalon, and an ASI174M camera. The result is an astonishing level of detail, revealing the subtle motion of plasma as it interacts with the sun's dynamic magnetic environment.
