Sunspot grows 5X the size of Earth! Solar storm fears rise, reveals NASA Observatory | Tech News

Sunspot grows 5X the size of Earth! Solar storm fears rise, reveals NASA Observatory

A sunspot named AR3354 has grown scarily big over the last 24 hours. It has now grown to be 5 times the size of the Earth, NASA’s Solar Dynamics Observatory has revealed. Will this spark new solar storm trouble for Earth?

| Updated on: Jun 28 2023, 12:32 IST
Think you know our Sun? Check out THESE 5 stunning facts
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1/5 The Sun is the largest object in our solar system and is a 4.5 billion-year-old star – a hot glowing ball of hydrogen and helium at the center of the solar system. It is about 93 million miles (150 million kilometers) from Earth, and without its energy, life as we know it could not exist here on our home planet. (Pixabay)
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2/5 The Sun’s volume would need 1.3 million Earths to fill it. Its gravity holds the solar system together, keeping everything from the biggest planets to the smallest bits of debris in orbit around it. The hottest part of the Sun is its core, where temperatures top 27 million degrees Fahrenheit (15 million degrees Celsius). The Sun’s activity, from its powerful eruptions to the steady stream of charged particles it sends out, influences the nature of space throughout the solar system. (NASA)
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3/5 According to NASA, measuring a “day” on the Sun is complicated because of the way it rotates. It doesn't spin as a single, solid ball. This is because the Sun’s surface isn't solid like Earth's. Instead, the Sun is made of super-hot, electrically charged gas called plasma. This plasma rotates at different speeds on different parts of the Sun. At its equator, the Sun completes one rotation in 25 Earth days. At its poles, the Sun rotates once on its axis every 36 Earth days. (NASA)
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4/5 Above the Sun’s surface are its thin chromosphere and the huge corona (crown). This is where we see features such as solar prominences, flares, and coronal mass ejections. The latter two are giant explosions of energy and particles that can reach Earth. (Pixabay)
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5/5 The Sun doesn’t have moons, but eight planets orbit it, at least five dwarf planets, tens of thousands of asteroids, and perhaps three trillion comets and icy bodies. Also, several spacecraft are currently investigating the Sun including Parker Solar Probe, STEREO, Solar Orbiter, SOHO, Solar Dynamics Observatory, Hinode, IRIS, and Wind. (Pixabay)
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Solar storm fears rise as a shocking new sunspot surprises everyone and grows five times the size of the Earth. (Pixabay)

In case you have been wondering why solar activity has increased exponentially over the last few months, you should know that scientists have predicted that the peak of the current solar cycle will arrive by the middle of 2025. The peak, also known as Solar Maximum, is the phase when the solar activity is at its highest in the 12-year period of the cycle. That's why we saw two separate solar flare incidents last week, both of which triggered a radio blackout on Earth. And now, NASA's Solar Dynamics Observatory (SDO) has spotted a troublesome sunspot that has grown exponentially to reach 5 times the width of the Earth in just 24 hours. It is bustling with unstable delta-class energy and can explode sparking tremendous solar storms towards the Earth.

According to a report by, “Sunspot AR3354 didn't exist yesterday. Today it is 5 times wider than Earth. A 24 hour movie from NASA's Solar Dynamics Observatory shows the sunspot's rapid development. It merits watching as a possible source of Earth-directed solar flares”.

Growing sunspot sparks fears of solar storms

Sunspots are the most common source of solar flares. We saw this last week when another notorious sunspot exploded producing an X-class solar flare that sent a large cloud of coronal mass ejections (CME) towards Venus and it eroded a small part of its atmosphere. If this sunspot suffers a similar explosion, the eventual solar storm on Earth can have devastating effects.

Such intense solar flare eruptions can release a large amount of CME, which when strikes the magnetosphere of the Earth, can produce up to G5-class geomagnetic storms. These storms can disrupt GPS, hamper mobile networks and the internet, and even cause a massive power outage by corrupting the power grids. Even the electronic devices on Earth are not safe from malfunctioning.

The role of the NASA Solar Dynamics Observatory

The NASA Solar Dynamics Observatory (SDO) carries a full suite of instruments to observe the Sun and has been doing so since 2010. It uses three very crucial instruments to collect data from various solar activities. They include Helioseismic and Magnetic Imager (HMI) which takes high-resolution measurements of the longitudinal and vector magnetic field over the entire visible solar disk, Extreme Ultraviolet Variability Experiment (EVE) which measures the Sun's extreme ultraviolet irradiance and Atmospheric Imaging Assembly (AIA) which provides continuous full-disk observations of the solar chromosphere and corona in seven extreme ultraviolet (EUV) channels.

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First Published Date: 28 Jun, 11:31 IST