IC 1805: The Heart Nebula

Explanation: Sprawling across almost 200 light-years, emission nebula IC 1805 is a mix of glowing interstellar gas and dark dust clouds, its nickname is the Heart Nebula. About 7,500 light-years away in the Perseus spiral arm of our galaxy, stars were born in IC 1805. In fact, near the cosmic heart's center are the massive hot stars of a newborn star cluster also known as Melotte 15, about 1.5 million years young. A little ironically, the Heart Nebula is located in the constellation Cassiopeia. From Greek mythology, the northern constellation is named for a vain and boastful queen. This deep view of the region around the Heart Nebula, cropped from a larger mosaic, spans about 2.5 degrees on the sky or about 5 times the diameter of the Full Moon.

Ref

Amazing natural phenomena to see before it's too late

Reference

TV Show : Nature's Most Amazing Events

Origin of current influenza H1N1 virus

A Triple Sunrise

Explanation: How can the same Sun rise three times? 2009 July 10, a spectacular triple sunrise was photographed at about 4:30 am over Gdansk Bay in Gdansk, Poland. Clearly, our Sun rises only once. Some optical effect is creating at least two mirages of the Sun -- but which effect? In the vast majority of similarly reported cases, mirages of the brightest object in the frame can be traced to reflections internal to the camera taking the images. Still, the above image is intriguing because a sincere photographer claims the effect was visible to the unaided eye, and because the photographer took several other frames that show variants of the same effect. Therefore, polite readers are invited to debate whether the above image captures a particularly spectacular example of common reflections inside a standard digital camera, shows one of the most spectacular examples of atmospheric lensing yet recorded, or was caused by something completely different.
http://antwrp.gsfc.nasa.gov/apod/ap090804.html

The Same Color Illusion

Explanation: Are square A and B the same color? They are. Are too. The above illusion, called the same color illusion, illustrates that purely human observations in science may be ambiguous or inaccurate. Even such a seemingly direct perception as relative color. Similar illusions exist on the sky, such as the size of the Moon near the horizon, or the apparent shapes of astronomical objects. The advent of automated, reproducible, measuring devices such as CCDs have made science in general and astronomy in particular less prone to, but not free of, human-biased illusions.

http://apod.nasa.gov/apod/ap091004.html

La Météo aujourd'hui : Images sattelites

الرضا بقضاء الله وقدره

دَعِ الأيام تفعـل مـا تشـاء
وطب نفساً إذا حكم القضـاء

ولا تجزع لحادثـة الليالـي
فما لـحوادث الدنيا بقـاء

وكن رجلاً على الأهوال جلداً
وشيمتك السماحـة والوفـاء

وإن كثرت عيوبك في البرايا
وسَرَّك أن يكـون لهـا غطـاء

تستر بالسخاء فكـل عيـبٍ
يغطيه كمـا قيـل السخـاء

ولا تَرَ للأعـادي قـط ذلاً
فإن شماتـة الأعـداء بـلاء

ولا تَرْجُ السماحة من بخيـلٍ
فما في النار للظمـآن مـاء

ورزقك ليس ينقصه التأنـي
وليس يزيد في الرزق العناء

ولا حزن يدوم ولا سـرور
ولا بؤس عليـك ولا رخـاء

إذا ما كنت ذا قلـب قنـوعٍ
فأنت ومالـك الدنيـا سـواء

ومن نزلت بساحتـه المنايـا
فلا أرض تقيـه ولا سمـاء

Great Image from Notional Geographic

Chi3r

إذا المـرء لا يرعـاك إلا تكلـفـــــــــاً...
فدعـه ولا تكثـر عليـه التأسـفـــــــــــــا

ففي الناس أبدال وفي الترك راحــة...
وفي القلب صبر للحبيب ولـو جفــــــــــا

فما كل مـن تهـواه يهـواك قلبـــــــه...
ولا كل من صافيته لـك قـد صفـــــــــــــا

إذا لم يكـن صفـو الـوداد طبيعــــــــة...
فلا خير فـي خـل يجـيء تكلفــــــــــــــــا

ولا خير فـي خـل يخـون خليلــــــــــه...
ويلقـاه مـن بعـد المـودة بالجفــــــــــــــا

وينكـر عيشـاً قـد تقـادم عـهــــــــــده...

ويظهر سراً كان بالأمس فـي خفـــــــــــا

Extrait min Mou9addamt Ibn Khaldoun