Archive for Space Weather

Green Comet Approaching Earth

Posted in 2017, Galaxy with tags , , , , on February 6, 2017 by theboldcorsicanflame

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This week, a small green comet named “45P/Honda-Mrkos-Pajdusakova” (45P for short) is approaching Earth for one of the closest comet flybys of the Space Age.

On the nights around Feb. 11th, Comet 45P will be an easy target for binoculars and small telescopes, revealing itself in eyepieces as an emerald colored fuzzball.

Visit today’s edition of Spaceweather.com for sky maps and to find out what makes this little comet so green.

Not every colorful light in the night sky is an aurora

Posted in 2016, astronomy with tags , , , , on October 4, 2016 by theboldcorsicanflame

 

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Photo copyright Beletsky

Especially not in the South Pacific. Yuri Beletsky was on a beach in Easter Island, Chile, two nights ago when the starry canopy turned red:

There was no fire,” says Beletsky. “This is an amazing display of airglow.”

Airglow is aurora-like phenomenon caused bychemical reactions in the upper atmosphere. Human eyes seldom notice the faint glow, because it is usually very faint, but it can be photographed on almost any clear dark night, anywhere in the world.

Beletsky is a veteran photographer of airglow, having captured it dozens of times from sites in Chile and the South Pacific. “The intensity of airglow varies, and sometimes it can be more prominent, as it was on Oct. 2nd,” he says.

The curious thing about Beletsky’s photo is not the intensity of the airglow, but rather its color–red. Airglow is usually green, the color of light from oxygen atoms some 90 km to 100 km above Earth’s surface.

Where does the red come from? Instead of oxygen, OH can produce the ruddy hue. These neutral molecules (not to be confused with the OH- ion found in aqueous solutions) exist in a thin layer 85 km high where gravity waves often impress the red glow with a dramatic rippling structure.

Read about

SPRITES ABOVE HURRICANE MATTHEW

http://www.spaceweather.com/archive.php?view=1&day=04&month=10&year=2016

August is the month when noctilucent clouds (NLCs) typically begin to wane

Posted in 2016, astronomy with tags , , , on August 9, 2016 by theboldcorsicanflame

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NOCTILUCENT CLOUDS, WANING YET STILL IMPRESSIVE:

August is the month when noctilucent clouds (NLCs) typically begin to wane.

Indeed, images from NASA’s AIM spacecraft show the electric-blue oval around the north pole is beginning to recede.

Nevertheless, high-latitude sky watchers are still seeing some impressive displays.

TO BE CONTINUED ON

http://spaceweather.com

 

Cosmic rays in the mid-latitude stratosphere now are approximately 10% stronger than they were 1 year ago.

Posted in 2016, astronomy with tags , , on February 10, 2016 by theboldcorsicanflame

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Last month, spaceweather.com reported that cosmic rays are intensifying. Measurements so far in February 2016 indicate that the trend is continuing. In fact, the latest balloon flight over California on Feb. 5th detected the highest value yet……(together with human pollution…and methane leaks in LA…etc ….we sure have a winner!)

FULL ARTICLE ON

http://spaceweather.com

A rare shot with Auroras and Light Pillars in the same image

Posted in 2016, astronomy with tags , , , , on January 14, 2016 by theboldcorsicanflame

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Last night in Muonio, Finland, Antti Pietikäinen hiked out onto the frozen surface of the River Muonio to get away from glaring city lights. “I was trying to get a better view of the auroras,” he says. Turns out, he got a great view of both

“I had a rare shot with auroras and light pillars in the same image,” says Pietikäinen.

Light pillars are a common sight around northern cities in winter. Urban lights bounce off ice crystals in the air, producing tall luminous columns sometimes mistaken for auroras.

More of this on http://spaceweather.com

 

The sun has unleashed 3 separate solar storms that have combined to smash into Earth’s atmosphere

Posted in 2015, astronomy, Galaxy with tags , , , , , , on June 24, 2015 by theboldcorsicanflame

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Forecasters say the storm will continue tonight, causing the huge aurora to be visible from the Earth’s north. It should be seen in much of Europe, as long as there are no clouds, and may even be visible as far south as the Canadian border with the US.

But the phenomenon could cause problems with electricity supplies here.

The US Government’s Space Weather Prediction Center (SWCP) said: ‘Aurora watchers in North America, especially northern states of the US, should stay alert.  

‘The geomagnetic storm that began on 22 June has reached G4 (Severe) levels once again as of 0513 UTC (0113 EDT) on 23 June. 

‘Solar wind conditions remain highly favourable for continued Strong Geomagnetic storming, with both fast solar wind and strong magnetic fields.’ 

‘This is the very early stages of an event that will play out over many hours, with SWPC forecasting continuing storm level intensities into tomorrow. 

Earth is entering a stream of debris from Comet Thatcher, source of the annual Lyrid meteor shower

Posted in 2015, astronomy, Galaxy with tags , , , , , , , on April 21, 2015 by theboldcorsicanflame

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Taken by Dan Bush on April 20, 2015 @ Albany, Missouri

If forecasters are correct, the shower will peak on April 22-23 with 10 to 20 meteors per hour. Sky watchers are already seeing some early arrivals. Dan Bush photographed this Lyrid fireball over Albany, Missouri, before sunrise on April 20th

“I captured an early Lyrid meteor in two of my all sky cameras,” reports Bush. “This is a 1 minute image stack. The brighter streak in the east from behind the tree is the trail of an airplane.”

Reports of Lyrids have also been received from Mexico and Washington state.

The Lyrid meteor shower is usually mild, and this year may be no exception. Nevertheless, these early sightings could herald a nice display. The best time to look is between about 11 pm on April 22nd and sunrise on April 23rd. [sky map]

Observing tips: Dress warmly. Bring a reclining chair, or spread a thick blanket over a flat spot of ground. Lie down and look up. Meteors can appear in any part of the sky, although their trails will tend to point back toward the constellation Lyra, from which the meteors get their name.  The hours before dawn are best, because that is when Lyra is highest in the sky.

http://spaceweather.com/

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