Earth & Space Weather

Volcanoes Today, 24 Jul 2013: Popocatépetl, Veniaminof, Raung

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volcanodiscovery-July 24,2013

Raung (East Java): Mild strombolian activity is taking place from the intra-crater cone, a recent photo shows.

Veniaminof (Alaska Peninsula, USA): AVO posted a picture showing the erupting intra-caldera cone emitting a lava flow and producing mild strombolian explosions.

Popocatépetl (Central Mexico): Following the relatively calm phase over the past week, CENAPRED lowered the alert level back to Yellow phase 2 (from 3).

Read More: http://www.volcanodiscovery.com/volcanoes/today.html

 
 

Cosmic whirl

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Earthsky.org, 7/23/13, Eleanor Imster

See larger image Image credit: ESA/Hubble & NASA

NGC 524 is a what’s called a lenticular galaxy. Lenticular galaxies are believed to be an intermediate state in galactic evolution — they are neither elliptical nor spiral.

Spirals are middle-aged galaxies with vast, pinwheeling arms that contain millions of stars. Along with these stars are large clouds of gas and dust that, when dense enough, are the nurseries where new stars are born

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Everything you need to know: Delta Aquarid meteor shower

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Earthsky.org, 7/23/13, Bruce McClure, Deborah Byrd

http://en.es-static.us/upl/2009/07/09jul29_430.jpg

The long, rambling Delta Aquarid meteor shower can be seen across the entire Earth, and sky watchers in the Southern Hemisphere and northern tropics have an especially good view. This shower is officially active from about July 12 to August 23 each year. It overlaps with the more famous Perseid meteor shower in August, and those who observe the Perseids are sure to see Delta Aquarid meteors flying on the same nights. Best time to look for both the Perseids and the Delta Aquarids is between midnight and dawn.

Does this shower have a peak? It does have a nominal peak in late July. This year, 2013 is not particularly favorable for watching this shower in late July, as moonlight will be washing the predawn meteors from the blackboard of night. In years when the moon is out of the way, the broad maximum of this shower can be expected to produce 15 to 20 meteors per hour in the predawn hours around July 29. Don’t worry about moonlight spoiling the show in 2013. Last quarter moon falls on July 29, and after that the moon will be waning, casting less and less light in the sky. By the time the 2013 Perseids roll around (August 11-13), you’ll definitely be seeing many Delta Aquarids as well!

Eyes on the Sky: July 22 thru July 28 (video)

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Eyesonthesky.org, 7/23/13

Published on Jul 21, 2013

www.eyesonthesky.com Eyes on the Sky turns 100! Take a look back at the evolution of Eyes on the Sky since its start in early 2011, and how it has changed, helped viewers find and observe all kinds of objects in the night sky, and a lot of fun and silly things it has done along the way to help educate about astronomy and light pollution. See what's up in the night sky every week with "Eyes on the Sky" videos, astronomy made easy.

Japan’s Sakurajima volcano shaken by large explosive eruption

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by The Extinction Protocol-July 22,2013

July 22, 2013 – JAPAN – A strong vulcanian explosion occurred last night at 11:02 GMT (20:02 local time), following several hours of near complete calm at the volcano. A loud cannon-shot bang accompanied the explosion, which generated a large mushroom cloud that reached 12,000 ft (3.7 km) altitude and engulfed the NE half of the Sakurajima peninsula and was followed by several smaller ones within about half an hour. The volcano and much of the surrounding areas remained under the ash plume for several hours until it started to clear up again. In the hours after the explosion, the Showa crater continued to emit ash plumes in often near-continuous pulses, sometimes reaching several 100 m height, but with no visible incandescence or audible sounds. –Volcano Discovery

2013′s third full supermoon on July 22

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Earthsky.org- 7/22/13, Bruce McClure and Deborah Byrd

June 2013 supermoon over Punta Manara, Sestri Levante Italy. Photo via Maranathi.it Photograpy

June 2013 supermoon over Punta Manara, Sestri Levante Italy. Photo via Maranathi.it Photography. The July supermoon might not look brighter to your eye, but watch for higher-than-usual tides in the days following it.

Space Weather Update~ Quiet Sun, Inside a Solar Wind Stream

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QUIET SUN: Solar activity remains low. NOAA forecasters estimate a slim 10% chance that sunspot AR1793 will break the quiet with an M-class solar flare on July 22nd. Solar flare alerts: text, voice.

THUNDER MOON: Picture this: You step outside on a warm summer evening. In the distance, a stroke of lightning plunges to Earth. One-one-thousand, two-one-thousand, three-one-thousand. The air shakes with thunder as the clouds part to reveal a brilliant full Moon. This could happen tonight. According to folklore, the full Moon of July 22nd is the "Thunder Moon", named after the storms of summer. Step outside after sunset and see what happens!

David Hoffmann photographed the waxing Thunder Moon on July 21st from Ashland, Oregon:

"It is always a pleasure watching the moon as she rises through the trees moving slowly into the night sky," says Hoffmann. "This Thunder Moon will be full on July 22nd at 11:17am Pacific time."

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