Tag: solar flare

Monster Flare Explodes From the Sun With Energy of Millions of H-Bombs

By Tom Yulsman | March 11, 2015 9:24 pm
solar flare

A significant flare exploded from the Sun on March 11, 2015, peaking at 12:22 p.m. EDT. The action was observed by NASA’s Solar Dynamics Observatory satellite. (Source: NASA SDO/Helioviewer.org)

The first monster solar flare of the year exploded from the Sun today, causing disruption to radio communications here on Earth for a time. It packed the energy of millions of hydrogen bombs exploding simultaneously.

To be fair, that kind of energy release is typical of solar flares in general. But this one was an X-class flare — the most powerful category.

If you doubt that they can be that powerful, have a look at the image above. It’s a screenshot of a video I created using data from the Solar Dynamics Observatory satellite. Check out the blindingly bright spot. That’s the flare, frozen in action. Now, check out the image of the Earth at the lower left corner, included for scale. Humbling, yes?

Also make sure to click the video to watch it. (It covers a time period of about six hours.) I’ve also included other views below. But first, some details about flares and what happened today:

Solar flares occur when pent up magnetic energy in the Sun’s atmosphere is suddenly and rapidly released, spewing out radiation across almost the entire electromagnetic spectrum, along with a spray of particles. Radiation travels at the speed of light, so if a flare is powerful enough and the Sun is facing Earth, it can reach us in about eight minutes.

Earth’s magnetic field and atmosphere protect us here on the ground. But the radiation can disrupt radio communications. That’s exactly what happened today: Read More

CATEGORIZED UNDER: Astronomy, select, Sun

Guest Pic of the Day: A Solar Flare Photographed by a Plucky NASA Spacecraft

By Tom Yulsman | January 13, 2015 9:30 pm
flare

A mid-level solar flare, imaged by NASA’s Solar Dynamics Observatory spacecraft on Jan. 12, 2015. (Source: NASA/SDO)

Pic of the Day

The sun emitted it’s biggest solar flare of the year so far, and NASA’s Solar Dynamics Observatory spacecraft was there to capture all of the action.

You can see the flare exploding off the right side of the Sun in the image above, acquired by SDO at 11:24 p.m. EST yesterday (January 12th).

Here’s a brief explanation of solar flares from NASA’s Goddard Space Flight Center: Read More

CATEGORIZED UNDER: Pic of the Day, select, Sun, Top Posts

Satellite Spies Gargantuan Sunspots that Could Launch Solar Explosions Toward Earth

By Tom Yulsman | November 27, 2014 12:17 pm
sunspots

A composite of images captured by Japan’s Hinode spacecraft shows the evolution of massive sunspots during two weeks in October, 2014. (Source: Hinode Science Center/NAOJ)

Looking a bit like nasty bruises, a cluster of truly massive sunspots appeared on the Sun’s surface starting in mid-October. Their collective surface area, measuring 66 times larger than the Earth’s cross section, was the largest in the last 24 years, according to the National Astronomical Observatory of Japan.

The sunspots produced six major solar solar flares before the sun’s rotation swung them out of view to the Hinode spacecraft in early November, which captured the images above.

You’re looking at multiple images superimposed on a single one of the sun showing the evolution and movement of the sunspots from the time they first rotated into Hinode’s view on Oct. 18th (left side of the image) to when they moved out of sight.

The sunspots have since re-emerged and are facing toward Earth again. They are capable of producing additional solar flares and accompanying explosions of solar material — toward us. Read More

NASA Spacecraft Watches as Sun Belches Spectacularly

By Tom Yulsman | October 7, 2014 9:13 am
belches

A massive cloud of solar material was blasted out into space when a flare erupted from the Sun on Oct. 2, 2014. The action was captured by NASA’s Solar Dynamics Observatory. (Source: NASA/SDO)

On October 2, the Sun let loose with a bright flash of radiation — a solar flare — propelling a cloud of particles probably weighing a trillion tons or so out into space at a million miles per hour.

belches

SDO spacecraft. (NASA)

Solar flares and associated plasma belches likes this (the latter are known more properly as coronal mass ejections) are relatively common during the peak of the ~11-year solar cycle — which is occurring right now. The flare was moderate in magnitude (M7.3 class).

While the flare itself may not have been particularly noteworthy, the high-resolution image of the solar plasma being flung out into space is undeniably spectacular. It was captured by NASA’s Solar Dynamics Observatory spacecraft.

In geosynchronous orbit around Earth, SDO has a continuous view of the sun. (That’s SDO in the thumbnail image above. Click it for an enlarged view.)

Read More

CATEGORIZED UNDER: Astronomy, select, Sun, Top Posts

Postcard from Norway: the Sky Shimmers With Green Fire Following Two Gargantuan Explosions on the Sun

By Tom Yulsman | September 13, 2014 6:08 pm
Sun

The aurora borealis shimmers above the Arctic Cathedral in Tromsø, Norway on September 12, 2014. (Photo: ©Tom Yulsman)

You may have heard about the massive flares and explosions that erupted from the sun this week. These photos show what happened when the blasts hit Earth: spectacular displays of the aurora borealis, or northern lights.

I’ve been traveling in Norway this week, and when I heard about the solar activity and the aurora forecast I borrowed a tripod from a friend here in Tromsø and raced out the door with my wife to take some photos. The images I captured show what happens when Earth’s magnetic field is bombarded by material coming from the Sun.

The photograph above shows the aurora borealis glimmering above Tromsø’s arresting Arctic Cathedral on Friday, September 12, 2014. Light from the city and the moon made the sky a bit bright, which helped to dim some of the detail in the aurora. Moreover, the sky was obscured by some cloudiness — and the clouds were light up by the streetlights below, which explains their somewhat strange coloring.

Sun

The skies above Mount Stor­stei­nen, Norway, glowed green with the northern lights on September 12th, 2014. (Photo: ©Tom Yulsman)

Read More

And Another One! Third Intense Solar Flare in 24 Hours

By Tom Yulsman | June 11, 2014 1:56 pm
After yesterday's two powerful flares, a third one erupted from the Sun this morning, as seen in this image from NASA's Solar Dynamics Observatory spacecraft. (Source: NASA SDO)

After yesterday’s two powerful flares, a third one erupted from the Sun this morning, as seen in this image from NASA’s Solar Dynamics Observatory spacecraft. (Source: NASA SDO)

Following two very powerful explosions of radiation yesterday, the sun this morning let loose with yet another X-class solar flare. It’s the intensely bright spot in the image above (with the Earth shown in the inset at bottom left to provide scale).

Scientists say more may be coming in the days ahead — just as the region of the sun that’s all hot and bothered rotates into a more Earth-directed position.

Solar flares occur when twisted magnetic fields suddenly release gargantuan amounts of energy, producing an explosion of radiation. X-class flares are the strongest of all, and they are capable of producing radio blackouts on Earth.

Today, the Space Weather Prediction Center had this to say about the flares and their impact on high frequency radio communications: Read More

Two Powerful Flares Erupt from the Sun

By Tom Yulsman | June 10, 2014 1:55 pm

The Sun is still very much alive and kicking: It emitted two extremely powerful bursts of radiation today — a pair of X-class solar flares within about an hour of each other. You can see both of them in this video from NASA’s Solar Dynamics Laboratory.

The X-class designation is reserved for the most powerful of solar flares.

Here is another view showing the entire Sun.

And here’s a really cool still image, also from the SDO spacecraft: Read More

CATEGORIZED UNDER: select, Solar System, Stars, Sun, Top Posts

With Frantic Splurts and Splats, the Sun Goes All Spasmodic

By Tom Yulsman | April 29, 2014 3:47 pm

NASA posted this video today of the Sun, and I just had to share it. After watching it, I’m thinking the Sun needs to chill a bit.

Okay, on second thought, maybe that’s a bad idea…

Sun goes spasmodic

An active region on the Sun. (Source: SDO/NASA)

In all seriousness, this video of the Sun going all spasmodic consists of images taken in extreme ultraviolet light by the orbiting Solar Dynamics Observatory. It shows an active region — an area where the sun’s magnetic field is particularly strong — spurting and erupting over the course of two and a half days, starting in April 19.  Active regions frequently produce solar flares and coronal mass ejections. (For a closeup still image of the frantic activity, click on the thumbnail at right.)

As NASA puts it, “All of the activity near this region was caused by intense magnetic forces in a powerful struggling with each other.”

I would have said “struggle,” but I don’t know. Maybe “struggling” conveys the freneticism even better.

CATEGORIZED UNDER: select, Solar System, Sun, Top Posts

Northern Lights: Coming to a Sky Near You?

By Tom Yulsman | January 9, 2014 2:30 am
Sun SDO Solar Flare

A massive solar flare erupting from the sun on Tuesday was captured by NASA’s Solar Dynamics Observatory spacecraft. (Source: NASA/SDO)

The massive flare that erupted from the sun on Tuesday could bring beautiful displays of the Northern Lights as far south as Colorado late on Thursday night and early Friday morning.

Click on the screenshot above to watch a movie of the solar flare captured by NASA’s Solar Dynamics Observatory spacecraft.

Aurora Northern Lights Sun Forecast

Aurora forecast. (Source: University of Alaska Geophysical Institute)

It was associated with a huge eruption of material called a coronal mass ejection. Now, that material is racing toward Earth and is expected to trigger a strong geomagnetic storm — a disturbance to Earth’s protective magnetic bubble called the magnetosphere. It’s that kind of disturbance that triggers the Northern Lights.

The University of Alaska’s Geophysical Institute predicts that auroral activity will be high on Thursday:

Weather permitting, highly active auroral displays will be visible overhead from Inuvik, Yellowknife, Rankin and Igaluit to Juneau, Edmonton, Winnipeg, Thunder Bay and Sept-Iles, and visible low on the horizon from Seattle, Des Moines, Chicago, Cleveland, Boston, and Halifax.

The Denver Post is reporting that displays of the aurora could even reach where I live near Boulder, Colorado. “This is very rare, especially for as far south as Denver and Boulder,” Joe Kunches, a forecaster with the federal Space Weather Prediction Center, told the Post.

There are no guarantees, of course. Clouds could obscure the view, city lights could wash it out, the solar material could arrive earlier or later than forecast, affecting visibility, etc. For the latest updates on what might happen, check the Space Weather Prediction Center here.

Happy viewing!

CATEGORIZED UNDER: select, Sun, Top Posts

Kaleidoscopic View of the Sun Reveals its Hidden Features

By Tom Yulsman | December 20, 2013 1:08 pm
Kaleidoscopic view of the Sun Solar Dynamics Observatory SDO

A screenshot of a movie of the sun from NASA’s Solar Dynamics Observatory. The pie-shaped slices show the sun in different wavelengths of light that are ordinarily invisible to our eyes. Each highlights different kinds of features on the sun’s surface and in its corona. (Source: NASA Goddard Space Flight Center)

The human visual system is an incredible example of natural engineering that far surpasses the very best cameras and lenses. To offer one example, on a bright day with extremely contrasty light, it can discern fine details in both the dark shadows and bright highlights — details that are all but lost in to a camera.

Even so, what we can see is extremely limited compared to what’s actually out there — a fact that is dramatically illustrated by the kaleidoscopic view of the sun above. It’s a frame from a movie put together by NASA to illustrate the abilities of the Solar Dynamics Observatory, an orbiting satellite that continuously monitors the sun.

SDO’s instruments are sensitive to wavelengths of light that are invisible to us. In the image, above (and the full video below), each pie-shaped slice represents a view of the sun in a particular wavelength. Viewing the sun in different wavelengths allows scientists to discern different kinds of features on its surface and in its atmosphere, called the corona.

Here’s the full video: Read More

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ImaGeo

ImaGeo is a visual blog focusing on the intersection of imagery, imagination and Earth. It focuses on spectacular visuals related to the science of our planet, with an emphasis (although not an exclusive one) on the unfolding Anthropocene Epoch.
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