เหตุการณ์ใน-นอกโลก VS ภัยธรรมชาติ และupdate พายุสุริยะ

คาดว่า flare ของเมื่อวานกับวันนี้น่าจะเพิ่มกำลังของพายุนะ

 

MAGNETIC ACTIVITY: A ragged, dynamic filament of magnetism is dancing along the sun's southwestern limb today. It is so large, more than 250,000 km from end to end, that amateur astronomers are able to see it in great detail using backyard solar telescopes. John Stetson sends this snapshot from Falmouth, Maine:



The magnetic underpinnings of this arching prominence may be connected to nearby sunspot AR1736, which is itself unstable and poses a threat for M-class solar flares. If the anchor is unstable, the overlying structure could collapse. Observers with solar telescopes are encouraged to monitor the southwestern limb for developments.

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

 

จุดดับเพิ่มขึ้นอีกต่างหาก จับตาสถานการณ์กันหน่อยจ้า

 

แนวพระจันทร์ก็อยู่แถวๆไทยอีก

 

http://www.facebook.com/photo.php?v=455871967834154

CME ได้ถูกตรวจจับได้จากการระเบิดของดวงอาทิตย์แบบกว้างกว่า 90 องศา ด้วยความเร็วสูงสุด 1059 กิโลเมตร/วินาที เมื่อวันที่ 9 พฤษภาคม 2013 เวลา 18.24 UT ตีหนึ่งครึ่งวันที่ 10 พฤษภาคม เวลาไทย

A halo or partial-halo CME was detected with the following characteristics:

t0 | dt0| pa | da | v | dv | minv| maxv|
041|2013/05/09 18:24| 04 | 208| 154| 0693| 0146| 0407| 1059

 

M มาอีกลูกแล้ว

 

BIG SUNSPOT, EMERGING: A farside sunspot that unleashed at least two M-class solar flares last week is now turning toward Earth. NASA's Solar Dynamics Observatory caught the active region, AR1745, emerging over the sun's eastern limb during the early hours of May 11th:

NOAA forecasters estimate a 40% chance of more M-class flares today. The location of AR1745, still near the sun's limb, will mitigate any Earth effects if the sunspot erupts. This will change, however, as the sun's rotation turns AR1745 more squarely toward our planet in the days ahead. Stay tuned.

จุดดับใหญ่ 1745 ที่ระเบิด M class Flare มาสองลูก ตอนนี้กำลังหันมายังโลก และมีโอกาสที่จะเกิด flare ระดับ M-class 40% วันนี้

(เพิ่มเติมเอง - จุดดับนี้ น่าจะมีผลกระทบกับไทยเรื่องน้ำ)

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

 

<iframe width="640" height="360" src="http://www.youtube.com/embed/YPthe9e-T18?feature=player_detailpage" frameborder="0" allowfullscreen></iframe>

May 10, 2013: Sunset is a special time of day. Low-hanging clouds glow vivid red and orange as the background sky turns cobalt blue. The first stars pop out in the heavenly dome overhead, eliciting wishes from backyard sky watchers.



The sunset of May 26th will be extra special. On that date, Venus, Jupiter and Mercury will gather in the fading twilight to form a bright triangle only three degrees wide.

Triple conjunctions of planets are fairly rare. The last time it happened was in May 2011, and it won't happen again until October 2015. This triple is especially good because it involves the three brightest planets in May's night sky: #1, Venus; #2, Jupiter; and #3, Mercury. The triangle will be visible even in places with heavy urban light pollution.

The best time to look is about 30 to 60 minutes after sunset. The three planets will be hugging the horizon, so a clear view of the western sky is essential.
Auroras Underfoot (signup)

Let Venus be your guide. It pops out of the fading twilight long before the others. As soon as you locate Venus, look in that direction using binoculars. If your binoculars are typical, all three planets will fit in the eyepiece simultaneously. As the twilight continues to fade, set the optics aside; eventually the triangle will become visible to the naked eye.

You don't have to wait until May 26th to enjoy the show, however. The planets start gathering weeks earlier. Dates of special interest include:

May 11th through 13th, when the crescent Moon, Venus, and Jupiter form a long diagonal line jutting upward from the sunset;
Sunset Triangle (compare, 200px)
The three planets to scale. More

May 23rd, when Jupiter and Venus converge to less than 5 degrees apart, close enough for simultaneous binocular viewing;

May 24th, when Mercury passes Venus less than 2 degrees away, giving shape to the triangle that reaches maximum compactness two nights later on May 26th.

The triangle begins to disperse on May 27th, but even then the show is not over. On May 28th, Venus passes Jupiter at a distance of 1 degree, forming a truly spectacular pair.

From beginning to end, the three naked-eye planets will be close enough to fit inside the field of ordinary binoculars from May 23rd until early June. May 26th is just the best among many very good nights.

Step outside, face west, and observe the planets. It's a beautiful way to end the day.