A rare astronomical event is set to occur on December 3-4, as a high-speed solar wind stream and an incoming coronal mass ejection (CME) may cause geomagnetic storms, making the northern lights visible in 15 US states. The affected states include Alaska, North Dakota, Minnesota, Montana, Wisconsin, Michigan, South Dakota, Idaho, Maine, Vermont, New Hampshire, Washington, Wyoming, Iowa, and New York.
To understand this phenomenon, it is essential to define some technical terms. A coronal mass ejection (CME) is a massive burst of plasma and magnetic field that is released from the sun. This release of energy can interact with Earth's magnetic field, causing geomagnetic storms. Additionally, a coronal hole is a region on the sun where the magnetic field is open, allowing solar wind to escape. The solar wind is a stream of charged particles emitted by the sun, which can also contribute to geomagnetic storms.
The upcoming geomagnetic storm activity is expected to be best visible at 4 p.m. - 7 p.m. EST (2100-0000 GMT) on December 3-4. During this time, the northern lights, also known as the aurora borealis, may be visible in the aforementioned states. The aurora borealis is a natural light display that occurs when charged particles from the sun interact with Earth's magnetic field and atmosphere.
The significance of this event extends beyond the visual spectacle it provides. Geomagnetic storms can have effects on Earth's magnetic field, which can, in turn, affect satellite communications and navigation systems. Furthermore, increased solar activity can also impact the performance of spacecraft and astronauts in orbit. Therefore, monitoring and predicting geomagnetic storms are crucial for the aerospace industry.
The National Oceanic and Atmospheric Administration (NOAA) is responsible for tracking and predicting space weather events, including geomagnetic storms. By providing forecasts and warnings, NOAA helps protect critical infrastructure and ensures the safety of people and technology in space. In conclusion, the upcoming geomagnetic storms and northern lights display serve as a reminder of the complex and dynamic relationship between Earth's magnetic field, atmosphere, and the sun's activity.