09/08/2024
Drum roll please! The award for best dressed goes to Denali's Night Sky!
With a sky filled with emerald greens and crimson red against a royal navy background, it is hard to outshine the Northern Lights. As skies in Alaska darken our park embraces the final of Evening Wear. Auroras represent outfits suited for an award ceremony or black-tie gala. The way the lights shimmer and wave like a long dress moving along the red carpet. What makes the lights shimmer?
The Sun is constantly sending waves of energy towards the Earth. On occasion, excess energy is offput from the Sun in the form of coronal mass ejections (CME's) and sent our way. For the most part, Earth's magnetic field redirects the energy from the Sun but during a CME that extra energy can follow the lines in the magnetic fields to the North and South poles. (This means that when aurora is happening near the North Pole it is simultaneously happening at the South Pole!) As that energy interacts with different particles in our atmosphere it creates waves of visible light for us to view.
Are you hoping to catch the Northern Lights? This year may be your year, we've reached a solar maximum meaning the sun is really active this year. The National Oceanic and Atmospheric Administration releases an aurora forecast to help you plan your evening viewing. You can check the forecast at the Space Weather Prediction Center by searching for "NOAA Aurora Forecast" on your favorite search engine.
If you can't make it to see the aurora in person, what outfit would you plan to represent the aurora at home?
Alt Text: A wave of green light swirls in a night sky above snow-covered peaks and spruce trees.
Photo Credit: NPS/K. Miller