The Red Planet Turns Green as Martian Sky Pulses With Ultraviolet Light, Study Shows

Research by the University of Colorado following two consecutive Martian years has observed immense light-causing emissions throughout the planet’s atmosphere. The new data offers an improved understanding of chemical and transport processes controlling the phenomena.

Entire regions of the Martian sky have been observed glowing in vibrant ultraviolet light, NASA revealed in a press release.

The pulsing light, known as “nightglow” and first identified by the MAVEN spacecraft, follows a set pattern, becoming visible three times a night and throughout the red planet’s spring and autumn.

​​Strange waves and spirals can also be seen over Mars’s winter poles, as revealed by new data published on 6 August in the Journal of Geophysical Research.

The lights take place when winds carry gas located in the higher regions of the planet’s atmosphere to lower, more dense parts, which leads to an increase in chemical reactions that form nitric oxide and cause a bright ultraviolet glow captured by spacecraft instrumentation but not visible to the human eye.

Milby noted that bright patches “would intensify overhead every night after sunset, and drift across the sky at 300 kilometers per hour (about 180 miles per hour)”.

​The pulsations are evidence that waves observed in the middle atmosphere align with those already known to exist in the above and below layers, showing how gas circulates across the entire Martian world, from the planet’s surface to the edge of space.

Light waves that encircle the planet are key to its atmosphere, indicating that it is influenced by daily heat patterns from the sun and disturbances from below, including gigantic volcanic mountains.

Researchers are now looking to observe a side-on view of the planet, instead of using imagery from directly above, which would provide a better understanding of vertical winds and seasonal changes that cause the ultraviolet glow.

Sourse: sputniknews.com