Tag Archives: Sunspot

Astronomy News

MAJOR X-CLASS SOLAR FLARE

Space Weather News for Feb. 9, 2024
https://spaceweather.com
MAJOR X-CLASS SOLAR FLARE: Today, the sun unleashed one of the biggest solar flares in years, a X3.4-class explosion from behind the sun’s southwestern limb. Solar protons energized by the flare are now raining down on Earth’s atmosphere, causing polar shortwave radio blackouts and other effects. The intensifying radiation storm could last for days. Follow this developing story @ Spaceweather.com.Solar flare alerts: Sign up for Space Weather Alerts to receive instant text messages when strong solar flares are underway
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Above: The extreme ultraviolet flash from today’s X3.4-class solar flare, recorded by NASA’s Solar Dynamics Observatory

Astronomy News

A SUNSPOT SO BIG YOU CAN SEE IT FROM MARS

A SUNSPOT SO BIG YOU CAN SEE IT FROM MARS: A huge sunspot (AR3363)  just emerged over the sun’s southeastern limb. Mars rover Perseverance saw it before we did. On July 2nd, the rover’s mast-mounted stereo camera (MASTCAM-Z) tilted up to the sky above Jezaro crater and photographed a deep-black dot on the solar disk:


Zoran Knez of Croatia assembled this montage using publically available NASA images

Perseverance does this all the time. Using a solar filter, the rover looks at the sun almost every day to check its brightness. When the sun dims, researchers know a dust storm is brewing–one of the most important forms of weather on the Red Planet.

Sunspots are just a bonus. A recent study shows that Perseverance sees more than 40% of all sunspots despite the fact that Mars is 78 million km farther from the sun than Earth and the rover’s camera doesn’t put many pixels across the solar disk. It is able to resolve about 10% of the biggest sunspots into multiple pixels.

Perseverance has one big advantage. It can see parts of the sun we cannot. From where Mars is currently located, Perseverance views more than half the sun’s farside, giving it a preview of sunspots still hidden from Earth. That’s how the rover spotted AR3363 days in advance.

People on Earth saw the sunspot for the first time on July 5th:

“A very big sunspot is coming!” says photographer Philippe Tosi of Nîmes, France, who inserted an image of Earth for scale.

Just don’t forget, Perseverance saw it first. Daily photos from Perseverance are available here. Select the date and camera (MASTCAM-Z), then start looking for sunspots.

more images: from Philip Smith of Manorville, New York; from P-M Hedén of Vallentuna Sweden; from Sylvain Weiller of Jerusalem, Israel

Astronomy News

Sunspot AR2529, CME, auroras possible

Brian-Dickmann-Sunspot
For more pictures of Sunspot AR 2529, go to http://spaceweathergallery.com/

Read that Sunspot AR2529 was big enough to be seen naked-eye, so I had a look-see this morning. My sight is getting worse (starting cataracts), unfortunately I saw three overlapping suns, but there was a slight streak of  darkness near the centre of the sun. I was able to confirm the sighting with binoculars covered with #14 welder’s glass. Not sure I would have seen anything without the binoculars had I not had three overlapping sunspots!

If you want to observe the sun, please be careful to use proper protection for your eyes!  http://www.skyandtelescope.com/astronomy-news/observing-news/how-to-look-at-the-sun/

I bought Welder’s glass #14 quite a  few years ago for 5$. You can also use binoculars and telescopes to project the sun onto a white surface. I used the projection method to view the transit of Venus.
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There will probably be auroras tonight, not sure how far south they will be visible though.

Space Weather News for April 12, 2016
http://spaceweather.com

EARTH ENTERS SOLAR WIND STREAM: A G1-class geomagnetic storm is in progress on April 12th as Earth enters a stream of fast-moving solar wind.  NOAA forecasters estimate a 70% chance of additional storming on April 13th as Earth moves deeper into the stream.  Also, a minor CME from big sunspot AR2529 could deliver a glancing blow to Earth’s magnetic field on April 13th, further boosting the odds of storminess.  Visit http://spaceweather.com for more information.

Astronomy News

Long Range Sensors Detect…

  • Huge Sunspot
  • Kepler is stabilized

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SOLAR MINIMUM, INTERRUPTED: The sun’s headlong plunge into solar minimum has been interrupted by the surprise emergence of a big sunspot.  AR2529 doubled in size over the weekend, and the behemoth spot is now being photographed by amateur astronomers around the world. On Saturday, Jean-Pierre Brahic of Uzès, France, took this picture of the swirling maelstrom of magnetic fields at the sunspot’s dark core:

As the inset image of Earth shows, the sunspot’s core is wide enough to swallow our planet–twice. Fortunately we are 93 million miles away.   READ MORE http://spaceweather.com/

KEPLER SPACECRAFT IS STABILIZED: You may have heard that the Kepler Spacecraft went into emergency mode. Fortunately, it’s back up, but won’t be asked to do much until scientists figure out what went wrong. It’s in orbit around the sun, so communication back & forth takes time–13 minutes.

Kepler is the spacecraft responsible for finding exoplanets, 1041 confirmed hits so far. More about Kepler and the exoplanets on its home page: http://kepler.nasa.gov/