Buzz
For centuries, people have marveled at one of Earth's most breathtaking natural spectacles: the Northern Lights. Recently, a fortunate few in the U.S. have had the rare opportunity to witness this phenomenon from their own backyards—and there may be another chance this week, according to Thrillist. But what exactly are they?
Long before science could explain the cause of this mesmerizing light show, ancient cultures had their own interpretations. Many early beliefs were rooted in spirituality, such as the idea that the lights were a pathway for souls to ascend to heaven (as believed by the Inuit) or a celestial battle between spirits (in Medieval Europe). Early scientific minds, though more grounded, speculated that the phenomenon was simply sunlight reflecting off the ice caps. In 1619, Galileo Galilei gave the lights the name aurora borealis, naming them after Aurora, the Roman goddess of dawn, after deducing that they were a result of sunlight interacting with the atmosphere.
Modern scientists now agree that the lights are caused by the collision of electrically charged particles from the sun with atoms in Earth's atmosphere. The energy released during these collisions manifests as light, and this spectacle is most visible near the poles because of the Earth's stronger magnetic fields in those regions. In 2008, a team from UCLA found that 'when two magnetic field lines approach each other due to the accumulation of energy from the sun, they reach a critical point, causing the magnetic fields to reconnect. This transformation of energy results in heat and kinetic energy, accelerating electrons and producing the dazzling lights.'
"Our data clearly demonstrates, for the first time, that magnetic reconnection is the cause," explained Vassilis Angelopoulos, a professor of Earth and Space Sciences at UCLA. "This reconnection leads to a slingshot effect, accelerating waves and plasma along magnetic field lines, illuminating the aurora below even before nearby space has had a chance to react. We are providing the proof that this process is occurring."
The optimal time to view the Northern Lights is during the winter months, thanks to Earth's position relative to the sun (shorter days result in darker skies at night). And don't forget—it’s not just the North Pole that offers this spectacular display; the Southern Lights exist as well. The aurora borealis can also be seen on other planets, such as Mars, ensuring that future generations born beyond Earth won’t miss this awe-inspiring natural wonder.
Still haven't witnessed them? Traditionally, the best spots to see the Northern Lights are in Iceland, Sweden, Norway, Finland, Greenland, northern Canada, and Alaska. Who knows, you might just get lucky this week and catch a glimpse right from your own home. For real-time updates on where the lights are visible, visit Aurorasaurus.
