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Published 20:46 IST, October 17th 2024

NASA and NOAA Confirm , Promising Spectacular Aurora Displays Ahead

NASA and NOAA confirmed the sun's solar maximum phase, leading to increased solar activity and opportunities to witness stunning auroras.

Reported by: Digital Desk
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NASA and NOAA Confirm , Promising Spectacular Aurora Displays Ahead
NASA and NOAA Confirm , Promising Spectacular Aurora Displays Ahead | Image: NASA
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NASA announced on Tuesday that the sun has reached its solar maximum period, which could last for another year, providing excellent opportunities to witness auroras in the coming months. This current solar maximum, which began approximately two years ago, may still extend further, pending further data analysis, according to NASA researchers. Typically, this phase lasts around three to four years.

Understanding the Solar Cycle

Solar activity operates on an 11-year cycle, oscillating between calm and active periods. During a solar maximum, there is an increase in solar flares and coronal mass ejections (CMEs), resulting in heightened geomagnetic storms that often create breathtaking auroral displays.

Visible light images from NASA’s Solar Dynamics Observatory highlight the appearance of the Sun at solar minimum (left, Dec. 2019) versus solar maximum (right, August 2024). During solar minimum, the Sun is often spotless. Sunspots are associated with solar activity, and are used to track solar cycle progress.<br>Credits: NASA/SDO

“During solar maximum, the number of sunspots, and therefore, the amount of solar activity, increases,” stated Jamie Favors, director of the Space Weather Program at NASA Headquarters in Washington. “This increase in activity provides an exciting opportunity to learn about our closest star — but also causes real effects at Earth and throughout our solar system.”

Impacts on Space Weather and Earth

Space weather, influenced strongly by solar activity, can significantly affect satellites, astronauts, and essential communication and navigation systems like radio and GPS, along with power grids on Earth. Increased solar activity has led to more visible auroras and impacts on satellites and infrastructure in recent months.

In May 2024, a series of significant solar flares and CMEs sent clouds of charged particles toward Earth, generating the strongest geomagnetic storm in two decades and potentially one of the most remarkable auroral displays recorded in the past 500 years.

On October 3, 2024, the Sun emitted a strong solar flare. As of this date, this solar flare is the largest of Solar Cycle 25 and is classified as an X9.0 flare. X-class denotes the most intense flares, while the number provides more information about its strength.NASA's Solar Dynamics Observatory captured imagery of this solar flare - as seen in the bright flash in the center - on October 3, 2024. The image shows a blend of 171 Angstrom, and 131 Angstrom light, subsets of extreme ultraviolet light.Credit: NASA/SDO

"This announcement doesn't mean that this is the peak of solar activity we'll see this solar cycle," cautioned Elsayed Talaat, director of space weather operations at the National Oceanic and Atmospheric Administration (NOAA). "While the sun has reached the solar maximum period, the month that solar activity peaks on the sun will not be identified for months or years."

Recently, bright red and green auroras have been spotted across various regions, including Germany, the United States, Britain, and as far south as the Mediterranean. These stunning natural light shows occur when charged particles from CMEs interact with Earth's magnetic field, triggering geomagnetic storms that illuminate the sky.

Although the chances of observing these colorful lights are highest during peak solar activity, NASA scientists emphasized that auroras can still be seen as the solar cycle begins to decline.

20:46 IST, October 17th 2024