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‘Finger-Like Solar Flares’ Explained in New Study

A solar flare is a term that denotes sudden flashes of brightness, caused by high-energy radiation, on the sun's surface. (Goddard Space Flight Center/AP)
A solar flare is a term that denotes sudden flashes of brightness, caused by high-energy radiation, on the sun's surface. (Goddard Space Flight Center/AP)
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‘Finger-Like Solar Flares’ Explained in New Study

A solar flare is a term that denotes sudden flashes of brightness, caused by high-energy radiation, on the sun's surface. (Goddard Space Flight Center/AP)
A solar flare is a term that denotes sudden flashes of brightness, caused by high-energy radiation, on the sun's surface. (Goddard Space Flight Center/AP)

In January 1999, scientists observed mysterious motions within a solar flare. Unlike typical flares that showed bright energy erupting outwards from the Sun, this solar flare also displayed a downward flow of motion, as if material was falling back towards the Sun. Astronomers wondered what exactly they were seeing.

Now, in a study published Jan. 27 in the journal Nature Astronomy, astronomers at the Center for Astrophysics | Harvard & Smithsonian (CfA) offer a new explanation for the poorly understood downflows.

"We wanted to know how these dark finger-like structures occur. What's driving them and are they truly tied to magnetic reconnection?" said lead author astronomer Chengcai Shen. Scientists have assumed that structures are tied to magnetic reconnection since their discovery in the 90s. The process occurs when magnetic fields break, releasing fast moving and extremely energetic radiation, and then reform.

"On the Sun, what happens is you have a lot of magnetic fields that are pointing in all different directions. Eventually the magnetic fields are pushed together to the point where they reconfigure and release a lot of energy in the form of a solar flare," said study co-author astronomer Kathy Reeves.

Reeves added: "It's like stretching out a rubber band and snipping it in the middle, so it's going to snap back."

Scientists assumed the dark downflows were signs of the broken magnetic fields "snapping back" to the Sun after a solar flare eruption. Most of the downflows observed by scientists are "puzzlingly slow." This is not predicted by classic reconnection models, which show the downflows should be much quicker. It's a conflict that requires some other explanation, said co-author Bin Chen, an astronomer at the New Jersey Institute of Technology.

To find out what was happening, the team analyzed downflow images captured by the Atmospheric Imaging Assembly (AIA) onboard NASA's Solar Dynamics Observatory. The AIA takes images of the Sun every 12 seconds in seven different wavelengths of light to measure variations in the Sun's atmosphere. They then made 3D simulations of solar flares and compared them to the observations.

The results show that most SADs are not generated by magnetic reconnection after all. Instead, they form on their own in the turbulent environment and are the result of two fluids with different densities interacting. Reeves said scientists are essentially seeing the same thing that happens when water and oil are mixed together: the two different fluid densities are unstable and ultimately separate. "Those dark, finger-like voids are actually an absence of plasma. The density is much lower there than the surrounding plasma," Reeves explained.

The team plans to continue their studies using 3D simulations to better understand magnetic reconnection. By understanding the processes that drive solar flares and eruptions from the Sun, they may ultimately help develop tools to forecast space weather and mitigate its impacts.

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ISS Crew Splashes Down on Earth After Medical Evacuation

FILE - This photo provided by NASA shows the Moon's shadow covering portions of Canada and the US during a total solar eclipse as seen from the International Space Station on Monday, Aug. 8, 2024. (NASA via AP, File)
FILE - This photo provided by NASA shows the Moon's shadow covering portions of Canada and the US during a total solar eclipse as seen from the International Space Station on Monday, Aug. 8, 2024. (NASA via AP, File)
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ISS Crew Splashes Down on Earth After Medical Evacuation

FILE - This photo provided by NASA shows the Moon's shadow covering portions of Canada and the US during a total solar eclipse as seen from the International Space Station on Monday, Aug. 8, 2024. (NASA via AP, File)
FILE - This photo provided by NASA shows the Moon's shadow covering portions of Canada and the US during a total solar eclipse as seen from the International Space Station on Monday, Aug. 8, 2024. (NASA via AP, File)

Four International Space Station (ISS) crewmembers splashed down in the Pacific Ocean early Thursday, video footage from NASA showed, after a medical issue prompted their mission to be cut short.

American astronauts Mike Fincke and Zena Cardman, Russian cosmonaut Oleg Platonov and Japan's Kimiya Yui landed off the coast of San Diego about 12:41 am (0841 GMT), marking the first-ever medical evacuation from the ISS.

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Lonely Tree in Wales Is an Instagram Star, but its Fate Is Inevitable

The Lonely Tree, often pictured submerged in water, was first planted in 2010. (Getty Images)
The Lonely Tree, often pictured submerged in water, was first planted in 2010. (Getty Images)
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Lonely Tree in Wales Is an Instagram Star, but its Fate Is Inevitable

The Lonely Tree, often pictured submerged in water, was first planted in 2010. (Getty Images)
The Lonely Tree, often pictured submerged in water, was first planted in 2010. (Getty Images)

It is one of Wales' most-loved beauty spots - but the time of the so-called Lonely Tree being an Instagram star could be slowly coming to an end.

The birch tree's striking setting at Llyn Padarn in Eryri, also known as Snowdonia, draws photographers to capture the sight through the seasons, according to BBC.

But the local authority Cyngor Gwynedd has raised the prospect of the tree, which was planted around 2010, disappearing within the next decade or so.

A lack of nutrients in the soil means birch trees have “a relatively short lifespan” in the area, typically living for around 30 years, but the fact that The Lonely Tree is sometimes submerged in water means its time could be even shorter.

Thousands of walkers and photographers make their way there each year and the tree has many social media sites dedicated to it, including one with 3,500 members on Facebook.

Marc Lock from Bangor, Gwynedd, said: “The Lonely Tree holds a special place in my heart and that of my family.”

He added: “Nestled down by the Lonely Tree, it's a perfect spot for us to sit, reflect and soak in the breath-taking scenery. We often go paddleboarding there in the summer months.”

However, Lock said the area really became his sanctuary after his wife bought him a camera for Christmas and he took up photography.

It was the place he headed to straight away, and he returns regularly at various times of the day and throughout the seasons.

“It's my go-to spot whenever I have some free time and my camera in hand,” he added. “I can't imagine what I would do if anything devastating happened to it like that at the Sycamore Gap tree at Hadrian's Wall. It's simply unthinkable.”

The Sycamore Gap was a much-loved landmark beside Hadrian's Wall in Northumberland that also drew hikers and photographers from far and wide.

It was more than 100 years old and had been the scene of many proposals, with people making the trip there from around the world.

But it was cut down by vandals in September 2023, causing uproar, with thousands of people leaving tributes and posting messages about their love for the beauty spot.

Two men were jailed for four years and three months after admitting the illegal felling.

While maybe not quite as famous as the Sycamore Gap was, The Lonely Tree is every bit as special to those that hold it dear to their heart.

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Four Signs You're Self-Sabotaging Your Joy

Threat or uncertainty can reduce cognitive regulation and increase avoidance behaviors. (Indiana University)
Threat or uncertainty can reduce cognitive regulation and increase avoidance behaviors. (Indiana University)
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Four Signs You're Self-Sabotaging Your Joy

Threat or uncertainty can reduce cognitive regulation and increase avoidance behaviors. (Indiana University)
Threat or uncertainty can reduce cognitive regulation and increase avoidance behaviors. (Indiana University)

Most of us, at some point in our lives, have stood in the way of our own growth.

We make progress on a project, start to feel hopeful about a relationship, or finally get on track with a goal, and then we do something that undermines it.

We fall into a procrastination spiral, pick a fight, or simply quit; in doing so, we talk ourselves out of something that could potentially bring us happiness.

There’s a name for this kind of behavior: self-sabotage.

Dr. Mark Travers, an American psychologist with degrees from Cornell University and the University of Colorado Boulder, wrote an essay at Psychology Today about four well-studied reasons why people sabotage good things, based on research in psychology.

Avoiding blame

According to Travers, one of the most consistently researched patterns in self-sabotage comes from what psychologists call self-handicapping.

He said this is a behavior in which people create obstacles to their own success so that if they fail, they can blame external factors instead of internal ability.

A prime example comes from classic research in which researchers observed students who procrastinated studying for an important test. The ones who failed mostly attributed it to a lack of preparation rather than a lack of organization or discipline.

Self-handicapping is not simply laziness or whimsy. Rather, it is a strategy people use to protect their self-worth in situations where they might perform “poorly” or where they might be perceived as inadequate.

Fear of failure or success

People often think of the fear of failure as the main emotional driver behind self-sabotage.

But research points to the fear of success as an equal, yet less-talked-about engine of the phenomenon. Both fears can push people to undermine opportunities that are actually aligned with their long-term goals.

He said people who worry that failure will confirm their negative self-beliefs are more likely to adopt defensive avoidance tactics, like procrastination or quitting early.

Fear of success, though less widely discussed, operates in a similar fashion. What motivates this fear is the anxiety that comes with the consequences of success.

So, self-sabotaging success can be a way to stay within a comfort zone where expectations are familiar, even if that zone is unsatisfying.

Negative self-beliefs

Self-sabotage is tightly intertwined with how people view themselves. When someone doubts their worth, their ability, or their right to be happy, they may unconsciously act in ways that confirm those negative self-views.

Psychological theories help explain this.

Self-discrepancy theory proposes that people experience emotional discomfort when their actual self does not match their ideal self. This mismatch can lead to negative emotions such as shame, anxiety, or depression.

Coping with stress and anxiety

Self-sabotage often emerges in moments of high stress or emotional threat. When people feel overwhelmed, anxious, or stretched thin, their nervous systems shift into protective modes. Instead of moving forward, they retreat, avoid, or defensively withdraw.

Threat or uncertainty can reduce cognitive regulation and increase avoidance behaviors. In situations of perceived threat, even if the threat is potential success or evaluation, people can default to behaviors that feel safer, even if they undermine long-term goals.