The Solar Saga of 2024: A Year of Cosmic Significance

From an entire solar eclipse to a nearly worldwide Northern Lights showcase, it was an eventful year for the Sun and the effects of space weather on Earth.

The Sun consistently remains the focal point within our solar system, yet 2024 stood out due to a series of incidents that occurred throughout the year – some anticipated and others unexpected.

Total solar eclipse amazes North America

At the beginning of the year, the Sun undoubtedly stole the spotlight during April’s Great American Eclipse. FOX Weather provided live coverage of the totality with teams from Texas to Maine as the Moon’s shadow obscured the Sun for several minutes, presenting a spectacular spectacle with partial eclipse observations visible across the continental U.S.

Preparations for the eclipse began months – even years – prior for those eager to experience the brief moments of totality. Americans relished the solar event, with festivities occurring nationwide, including group weddings, proposals, festivals, and abundant scientific endeavors.

The next occurrence when a significant segment of the U.S. will be within the path of totality is in 2045 when an eclipse traverses from the Pacific Northwest to the Southeast.

Solar Maximum approaches

In October, the Sun entered a phase of heightened activity within an 11-year cycle known as the Solar Maximum, characterized by recent geomagnetic disturbances and nearly global aurora light spectacles.

Solar Cycle 25 has been progressing, and researchers from NOAA and NASA have been monitoring sunspots to assess and forecast solar dynamics. The past two years have marked the active phase of this solar cycle, evidenced by a greater occurrence of sunspots.

According to Arcfield‘s lead scientist and space weather authority Geoff Crowley, this period of intensified activity does not simply end when Solar Maximum is achieved.

“Typically, we estimate that the solar maximum endures for around a year,” Crowley remarked. “During 2025, we anticipate significant activity.”

Northern Lights mesmerize during strongest solar storm in 21 years

In May, millions of individuals who usually cannot behold some of the most stunning effects of space weather were treated to a dazzling display of Aurora Borealis, or the Northern Lights.

On May 10, NOAA’s Space Weather Prediction Center announced that “extreme” Level 5 out of 5 geomagnetic storm conditions were recorded for the first time in 21 years.

The most significant space weather incident of the year transpired over several days, showcasing Northern Lights as far south as Florida.

“Many individuals are still discussing that storm, trying to grasp what occurred and the consequences. So that was exceptionally substantial,” Crowley noted.

In October, yet another intense geomagnetic storm produced Northern Lights even in the Southeast.

Crowley suggested that these solar storm occurrences may continue for numerous years.

“Interestingly, many of the major (solar) storms arise on the downward slope of the solar cycle,” he affirmed. “I foresee that within the next two or three years, there will be some notable solar activity that we should be prepared for.”

Escalating space weather effects

The same potent charged particles from the Sun that generate stunning luminous displays can adversely affect satellites, GPS systems, high-frequency radio communications, aviation operations, and the power grid.

Crowley noted that Earth’s infrastructure and space satellites largely withstood damage during the strongest geomagnetic storm in two decades, apart from a few exceptions.

Some of the most significant effects of space weather this year were on the GPS systems utilized in agriculture for seeding. The most powerful solar storm of the year occurred in May, coinciding with the seeding season for many crops.

“In certain situations, there’s not even a farmer operating the tractor. It’s fully automated. Thus, during the storm, there was a loss of GPS precision,” Crowley explained.

Farmers cultivated less corn and other crops amid the May storm. Crowley estimated the current deficit to the agricultural sector due to GPS issues at around $500 million.

Another issue during solar storm events was the amplified drag experienced by satellites in low-Earth orbit. During a significant geomagnetic storm, satellite operators lose the capability to forecast the satellite’s trajectory or position.

“They were fortunate that there were no collisions because they couldn’t accurately predict potential collisions,” Crowley stated.

After deploying a batch of Starlink satellites during a geomagnetic event in 2022 and losing 40 satellites, SpaceX elevated its orbit to mitigate the drag to a level the satellite propulsion systems could manage.

Since the last extreme geomagnetic storm, our society has become increasingly reliant on services susceptible to space weather impacts. Crowley remarked that various industries in the U.S. have implemented strategies to prevent outages and disruptions.

“The space weather community is genuinely optimistic about having gained a significant understanding of storms and that mitigation measures have been adopted by several industries, especially the electric power grid and aviation sectors,” he added.

Approaching the Sun

Once again, the Sun will receive heightened focus at the end of 2024 when NASA’s Parker Solar Probe “kissed” the solar surface, becoming the closest human-made object ever.

Launched in 2018, the Parker Solar Probe has been gradually narrowing the gap to the Sun and will come within 3.8 million miles of our star on Dec. 24.

To investigate the Sun at this proximity, the Parker Solar Probe possesses a 4.5-inch-thick carbon-composite shield engineered to endure 2,500 degrees Fahrenheit.

During its nearest approach on Christmas Eve, the spacecraft navigated through plumes of plasma still interconnected with the Sun. NASA asserts that this is sufficiently close to maneuver inside a solar eruption, akin to a surfer duck-diving beneath an ocean wave.