People have been inspired by the colourful shifting lights of the Aurora Borealis and Aurora Australis for thousands of years, with modern-day adventurers travelling to 'aurora hotspots' in the hope of getting a glimpse of them. Bryony Lanigan, Astronomer at Royal Observatory Greenwich, brings together many fields of research, from astronomy and solar physics to geology and atomic physics, as she explores the science behind these magical displays.
Author: Bryony Lanigan
Along the way, we take a whistle-stop tour through the electromagnetic spectrum, learn some elementary atomic physics, meet a mysterious phenomenon with a decidedly un-mysterious name and get to grips with the fundamental role of magnets (very, very large ones) in auroral activity.
Lanigan doesn't just stay on Earth, though - she reveals that the spectacle has been observed elsewhere in our Solar System, too! Of course, nothing is simple and aurorae on the other planets often confound the explanations we've worked so hard to come up with.
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This product was placed on the market before December 13, 2024, in accordance with the applicable regulations at the time (the General Product Safety Directive). As a result, it can continue to be sold without needing to meet the new requirements introduced by the General Product Safety Regulation (GPSR). The product remains fully compliant with all previously valid legal standards, ensuring its continued quality and safety.