صور رومانسيه

اضافاتها ™SaRa on 7:34 م التعليقات (0)

صور كارتون جميله

اضافاتها ™SaRa on 10:10 م التعليقات (2)

صورلطائر النورس ...جميله جدا

اضافاتها ™SaRa on 2:45 م التعليقات (0)

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.


Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Picture of Seagull - Free Pictures - FreeFoto.com

Picture of a Seagull.

Read more!

عِلْم الفلك من القرون الوسطى مِنْ ديرِ ملك

اضافاتها ™SaRa on 2:18 م التعليقات (0)

2009 April 17
See Explanation.  Clicking on the picture will download  the highest resolution version available.

Medieval Astronomy from Melk Abbey
Credit: Paul Beck (Univ. Vienna), Georg Zotti (Vienna Inst. Arch. Science)
Copyright: Library of Melk Abbey, Frag. 229

Explanation: Discovered by accident, this manuscript page provides graphical insight to astronomy in medieval times, before the Renaissance and the influence of Nicolaus Copernicus, Tycho de Brahe, Johannes Kepler, and Galileo. The intriguing page is from lecture notes on astronomy compiled by the monk Magister Wolfgang de Styria before the year 1490 at Melk Abbey in Austria. The top panels clearly illustrate the necessary geometry for a lunar (left) and solar eclipse in the Earth-centered Ptolemaic system. At lower left is a diagram of the Ptolemaic view of the solar system and at the lower right is a chart to calculate the date of Easter Sunday in the Julian calendar. Text at the upper right explains the movement of the planets according to the Ptolemaic system. The actual manuscript page is on view at historic Melk Abbey as part of a special exhibition during the International Year of Astronomy.

المصدر

Read more!

NGC 1333 Stardust

اضافاتها ™SaRa on 2:00 م التعليقات (0)

2009 April 18
See Explanation.  Clicking on the picture will download  the highest resolution version available.

NGC 1333 Stardust
Credit & Copyright: Stephen Leshin

Explanation: NGC 1333 is seen in visible light as a reflection nebula, dominated by bluish hues characteristic of starlight reflected by dust. A mere 1,000 light-years distant toward the heroic constellation Perseus, it lies at the edge of a large, star-forming molecular cloud. This striking close-up view spans about 4 light-years at the estimated distance of NGC 1313. It shows details of the dusty region along with hints of contrasting emission in red jets and glowing gas from recently formed stars. In fact, NGC 1333 contains hundreds of stars less than a million years old, most still hidden from optical telescopes by the pervasive stardust. The chaotic environment may be similar to one in which our own Sun formed over 4.5 billion years ago.

المصدر

Read more!

منظر بالقرب من الثقب الاسود

اضافاتها ™SaRa on 1:46 م التعليقات (0)

2009 April 19
See Explanation.  Clicking on the picture will download the highest resolution version available.

The View Near a Black Hole
Drawing Credit: April Hobart, CXC

Explanation: In the center of a swirling whirlpool of hot gas is likely a beast that has never been seen directly: a black hole. Studies of the bright light emitted by the swirling gas frequently indicate not only that a black hole is present, but also likely attributes. The gas surrounding GRO J1655-40, for example, has been found to display an unusual flickering at a rate of 450 times a second. Given a previous mass estimate for the central object of seven times the mass of our Sun, the rate of the fast flickering can be explained by a black hole that is rotating very rapidly. What physical mechanisms actually cause the flickering -- and a slower quasi-periodic oscillation (QPO) -- in accretion disks surrounding black holes and neutron stars remains a topic of much research.

المصدر

Read more!

صور اسماك غريبه

اضافاتها ™SaRa on 1:34 م التعليقات (0)

Robot Fish

Axolotl

Mudskipper

Slander Lanternfish

Deep-sea stargazer

Giant Hatchetfish



Dumbo Octopus


Eelpout


Black-lip Rattail

Humpback Anglerfish


Coelacanth


Northern Seahorse

Longhorn Cowfish


Leafy Sea Dragon


Lumpfish


Atlantic Wolffish

Lionfish


Fangtooth Fish

Black Chimaera


Clown Triggerfish


Longlure Frogfish


Black Swallower


Mantis Shrimp


صوراسماك صورحيوانات صور غريبه صور عجيبه صور متنوعه صور جديده

Read more!