Why the Northern Lights can be green, red, or purple: what triggers them and what times of year they tend to appear most frequently

The aurora borealis consists of colorful atmospheric lights that manifest as arcs, bands, and curtains in the upper atmosphere near the magnetic North Pole. These displays, which can appear in shades of green, red, or violet, are triggered by specific conditions and occur with varying frequency throughout the year.

In a separate cultural development, the film 'La bola negra,' directed by Javier Calvo and Javier Ambrossi, draws inspiration from an unfinished work by Federico García Lorca. The production incorporates numerous visual and textual references to the poet and broader popular culture, including specific allusions such as a statue and elements related to San Sebastián.