Sun & Space WeatherPEER REVIEWED

Could the Sun Produce a Superflare?

By Space.Fan Editorial DeskSeptember 20, 2026 at 10:36 PM UTC

New research suggests our Sun might have the power to unleash massive space storms, challenging what we previously thought about our star.

Image · Universe Today

The Drop

The Sun creates energy bursts known as solar flares when magnetic fields in dark spots on its surface, called sunspots, snap and reconnect. While the Sun seems quiet compared to others in the galaxy, a new study suggests it may be capable of much larger outbursts than we believed. Scientists analyzed data from NASA’s Solar Dynamics Observatory to study the link between the size of sunspots and the power of the flares they create. They found that larger sunspots can lead to much bigger explosions. By looking at historical records, researchers tested their math against famous past storms. They discovered that the giant sunspot seen in 1947 was big enough that, if it had erupted, it could have created a superflare. This suggests the Sun is physically built to produce these massive events, even if it has not done so recently.

Why It Matters

This discovery matters because it changes our understanding of the Sun’s limits. Previously, some people thought the Sun was just not made to create super-sized flares. If the Sun can produce them, it means our modern technology—like power grids and satellites—could face stronger solar storms than we once expected. Understanding this potential helps experts better prepare for future space weather that could affect our high-tech world.

The Catch

While the math shows the Sun has the size needed for a superflare, it does not mean one will happen soon. A large sunspot provides the potential for a big flare, but it does not guarantee one will occur. The researchers have shown what is possible in theory, not what is certain to happen in the future.

Put That in Perspective

History gives us clues about how powerful these storms can be. In 1859, a massive storm known as the Carrington Event caused telegraph machines to spark and light up the sky with auroras. The 1947 sunspot was even larger, showing that the ingredients for a major event have existed on our Sun in the past.

Source September 20, 2026

Natalie Krivova

Max Planck Institute for Solar System Research·Philosophical Transactions A