เหตุการณ์ใน-นอกโลก VS ภัยธรรมชาติ และupdate พายุสุริยะ

เมื่อคืนเห็นประมาณนี้ เวลาประมาณ ห้าทุ่มได้ อยู่กลางฟ้า

 

COMET PAN-STARRS UPDATE: Comet Pan-STARRS (C/2011 L4), widely expected to become a naked-eye object in early March, is now closer to the sun than Venus. Solar heating is vaporizing the comet's icy core and creating a wide, fan-shaped tail visible through binoculars in the southern hemisphere. Ignacio Diaz Bobillo sends this picture from Buenos Aires, Argentina:



"I saw Comet Pan-STARRS just before daybreak in the constellation Grus," says Bobillo. "This is what it looked like through a small telescope, imaged with an exposure time of 8x2 minutes."

In early March, Comet Pan-STARRS will make its closest approach to the sun inside the orbit of Mercury; at that time it could brighten to easy naked-eye visibility. No one knows exactly what will happen, however, because it is a fresh comet being exposed to solar heating for the first time. Experts discuss the possibilities in this video from Science@NASA.

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

ดาวหาง PAN-STARRS (C/2011 L4) คาดว่าจะมองเห็นได้ด้วยตาเปล่า ในต้นเดือนมีนานี้ ตอนนี้มันอยู่ใกล้กับดวงอาทิตย์และดาวศุกร์ ความร้อนทำให้น้ำแข็งของดาวหางนี้กลายเป็นไอและทำให้เป็นหางแบบพัดสามารถมองเห็นได้จากกล้องส่องทางไกล ทางทิศใต้

 

เดี๋ยวนี้ดวงอาทิตย์แปลกๆ

 

Today, 4 solar flares were observed:

Active region Begin, UT Max, UT End, UT
Flare of class C1.0 1675 00:31:00 00:36:00 00:38:00
Flare of class C2.5 1675 15:26:00 15:40:00 15:43:00
Flare of class M1.9 1675 15:45:00 15:50:00 15:52:00
Flare of class C1.0 0 19:57:00 20:00:00 20:02:00

№ 1671 N14 W08 03 Cso 0090 04 078 Beta
№ 1672 S17 W29 01 Axx 0010 01 097 Alpha
№ 1673 S10 E56 11 Cso 0100 05 012 Beta
№ 1675 N12 E31 09 Bxo 0010 03 036 Beta
№ 1676 S18 E78 01 Hax 0030 02 350 Alpha

 

วันที่ 19 กุมภาพันธ์ พบจุดดับขยายตัว เป็นลางบอกเหตุถึงแผ่นดินไหวเกิน 6 ริตเตอร์ ภายใน 3 วันข้างหน้า และพบพายุสุริยะขนาดใหญ่ทิศทางตรงกับโลก ซึ่งคาดว่าจะเดินทางมาถึงโลกในวันที่ 22 กุมภาพันธ์ เวลา 18 UTC +/- 7 ชั่วโมง (ตีหนึ่ง 23 กุมภาพันธ์)

http://www.truth4thai.org/planetaryalignment/Feb_2013

 

Coronal Holes: 19 Feb 13



Solar wind flowing from this sinuous coronal hole could reach Earth as early as Feb. 21st. Credit: SDO/AIA.

 

A GREEN LEMMON: At the moment there are three significant comets plunging toward the sun: Comet ISON, Comet Pan-STARRS, and Comet Lemmon. The most beautiful so far is this one:

A GREEN LEMMON:: ปัจจุบันมีดาวหางที่วิ่งเข้าหาดวงอาทิตย์ลูกสำคัญๆ 3 ลูก ได้แก่ ดาวหาง ISON, ดาวหาง Pan-STARRS และดาวหาง Lemmon. และดวงที่สวยที่สุดตอนนี้คือ ดวงนี้แหล่ะ



They came from outer space--and you can have one! Genuine meteorites are now on sale in the Space Weather Store.

"Comet Lemmon has a beautiful tail with lovely fine structure," says Phil Hart of Lake Eppalock, Victoria, Australia, who photographed it on Feb. 17th.

The comet is now slightly closer to the sun than Earth. Solar heating has turned it into a binocular object (magnitude +5.5 to +6) barely visible to the human eye, but dazzling through backyard telescopes, as shown in Hart's photo above.

Comet Lemmon's verdant color comes from two of the gases boiling off its nucleus: cyanogen (CN: a poisonous gas found in many comets) and diatomic carbon (C2). Both substances glow green when illuminated by sunlight in the near-vacuum of space.

The combination of its colorful atmosphere and filamentary tail make this comet visually striking. Ultimately, Comet Pan-STARRS and especially Comet ISON could surpass it, but for now the most beautiful comet in the solar system appears to be a green Lemmon. More about Comet Lemmon: 3D orbit, ephemeris, light curves.

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

 

CHANCE OF FLARES: New sunspot AR1678 has developed a delta-class magnetic field that harbors energy for strong explosions. NOAA forecasters estimate a 45% chance of M-flares and a 15% chance of X-flares during the next 24 hours.

โอกาสที่จะเกิด Flare - จุดดับใหม่ AR1678 ได้พัฒนาเป็นสนามแม่เหล็ก class delta แล้ว จะทำให้เกิดพลังงานที่ระเบิดได้รุนแรง โอกาสเกิด M-flare 45%, X-flare 15% ภายใน 24 ชั่วโมงนี้

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

№ 1671 N16 W59 02 Hsx 0090 03 074 Alpha

№ 1673 S11 E04 16 Cao 0080 08 010 Beta

№ 1675 N12 W23 01 Hsx 0050 03 038 Alpha

№ 1676 S19 E26 02 Cso 0050 03 348 Beta

№ 1677 S28 E26 01 Axx 0010 01 349 Alpha

№ 1678 N11 W54 13 Dkc 0360 08 068 Beta-Gamma-Delta

№ 1679 S14 E30 01 Axx 0010 01 344 Alpha

Coordinates and other characteristics of active regions are issued for February 21, 2013 00:31 UT

 

Giant sunspot that's SIX TIMES the diameter of Earth has formed in less than 48 hours - and could lead to solar flares

จุดดับใหญ่ ใหญ่ว่าเส้นผ่านศูนย์กลางโลกถึง 6 เท่า ก่อตัวขึ้นภายใน 48 ชั่วโมง และสามารถทำให้เกิด solar flare ได้

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UBLISHED: 17:59 GMT, 21 February 2013 | UPDATED: 07:49 GMT, 22 February 2013

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A giant sunspot that is at least six times the diameter of Earth has formed on the Sun in less than 48 hours, Nasa has announced.

Sunspots are dark spots on the surface of the Sun which appear as turbulent magnetic fields in its surface rearrange and realign.

The massive sunspot, which formed over the course of Tuesday and Wednesday, quickly evolved into an unstable configuration, and could lead to solar flares, which can interrupt our radio communications.



Nasa scientists spotted the huge sunspot forming through instruments on the agency's Solar Dynamics Observatory, one of several spacecraft that monitor the Sun's weather.

'Over the course of February 19-20, 2013, scientists watched a giant sunspot form in under 48 hours,' said Karen Fox, a spokesman for Nasa.

'It has grown to over six Earth diameters across but its full extent is hard to judge since the spot lies on a sphere not a flat disk.'

The sunspot identified by Nasa is formed of several dark blemishes on the surface on the Sun which have evolved rapidly over the past couple of days.
NASA'S SUN WATCHER: THE SOLAR DYNAMICS OBSERVATORY

The Solar Dynamics Observatory contains a suite of instruments that will provide observations leading to a more complete understanding of the solar dynamics that drive variability in the Earth's environment.

This set of instruments:

Measures the extreme ultraviolet spectral irradiance of the Sun at a rapid cadence
Measures the Doppler shifts due to oscillation velocities over the entire visible disk
Makes high-resolution measurements of the longitudinal and vector magnetic field over the entire visible disk
Makes images of the chromosphere and inner corona at several temperatures at a rapid cadence
Makes those measurements over a significant portion of a solar cycle to capture the solar variations that may exist in different time periods of a solar cycle

Sunspots are caused by intense magnetic activity and are actually cooler than the rest of the Sun, which leaves them clearly visible as dark spots in the photosphere.

In reality, if the sunspot were isolated from the surrounding photosphere it would be brighter than an electric arc.

Ms Fox added: 'The spot quickly evolved into what's called a delta region, in which the lighter areas around the sunspot, the penumbra, exhibit magnetic fields that point in the opposite direction of those fields in the center, dark area.

'This is a fairly unstable configuration that scientists know can lead to eruptions of radiation on the sun called solar flares.'

The observation comes as the Sun is gearing up for the most active phase of its 11-year solar cycle.

The Sun's magnetic field lines are the most distorted at this time due to the magnetic field on the solar equator rotating at a slightly faster pace than at the solar poles.

This causes large numbers of sunspots appear, and the Sun's irradiance output grows by about 0.1 per cent.

The increased energy output of solar maxima can impact global climate and recent studies have shown some correlation with regional weather patterns.

The solar cycle takes an average of about 11 years to go from one solar maximum to the next, with an observed variation in duration of 9 to 14 years for any given solar cycle.

Large solar flares often occur during a maximum. For example, the Solar storm of 1859 struck the Earth with such intensity the northern lights could be seen as far south as Rome.

The last solar maximum was in 2000. In 2006 NASA initially expected a solar maximum in 2010 or 2011, and thought that it could be the strongest since 1958.

However, more recent projections say the maximum should arrive in autumn of 2013 and be the smallest sunspot cycle since 1906.

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กลุ่มจุดดับทั้งหลาย (เยอะและใหญ่มั๊ก)



credit: www.solarham.net

 

[ame=http://www.youtube.com/watch?v=ah5Xc9ROS7E]The News - 3MIN News February 19, 2013 Solar Eruptions in Progress - YouTube[/ame]