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Εργαλεία Θεμάτων Αξιολόγηση: Αξιολόγηση θέματος: 91 Ψήφοι, 4,95 κατά μέσο όρο. Τρόποι εμφάνισης
  #3901  
Παλιά 15-08-17, 09:36
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Τελευταία φορά Online: Σήμερα 09:07
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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

15 Aug 2017



Stars, Gas, and Dust Battle in the Carina Nebula

Image Credit & Copyright: Bastien Foucher

Explanation: Chaos reigns in the Carina Nebula where massive stars form and die. Striking and detailed, this close-up of a portion of the famous nebula is a combination of light emitted by hydrogen (shown in red) and oxygen (shown in blue). Dramatic dark dust knots and complex features revealed are sculpted by the winds and radiation of Carina's massive and energetic stars. One iconic feature of the Carina Nebula is the dark V-shaped dust lane that occurs in the top half of the image. The Carina Nebula spans about 200 light years, lies about 7,500 light years distant, and is visible with binoculars toward the southern constellation of Carina. In a billion years after the dust settles -- or is destroyed, and the gas dissipates -- or gravitationally condenses, then only the stars will remain -- but not even the brightest ones.

Tomorrow's picture: interplanetary dust

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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  #3902  
Παλιά 16-08-17, 09:31
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Τελευταία φορά Online: Σήμερα 09:07
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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

16 Aug 2017



Stars, Gas, and Dust Battle in the Carina Nebula

Image Credit & Copyright: Tamas Ladanyi (TWAN)

Explanation: Just after moonrise on August 12 this grain of cosmic sand fell by the sea, its momentary flash part of the annual Perseid Meteor Shower. To create the Perseid meteors, dust along the orbit of periodic comet Swift-Tuttle is swept up by planet Earth. The cometary debris plows through the atmosphere at nearly 60 kilometers per second and is quickly vaporized at altitudes of 100 kilometers or so. Perseid meteors are often bright and colorful, like the one captured in this sea and night skyscape. Against starry sky and faint Milky Way the serene view looks south and west across the Adriatic Sea, from the moonlit Dalmatian coast toward the island of Brac.

Tomorrow's picture: pixels in space

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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An eye for an eye, will make us all blind... Mahatma Ghandi

Τελευταία επεξεργασία από το χρήστη pazo : 17-08-17 στις 09:34
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  #3903  
Παλιά 17-08-17, 09:28
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Τελευταία φορά Online: Σήμερα 09:07
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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

17 Aug 2017



NGC 2442: Galaxy in Volans

Image Credit & Copyright: Tamas Ladanyi (TWAN)

Explanation: Distorted galaxy NGC 2442 can be found in the southern constellation of the flying fish, (Piscis) Volans. Located about 50 million light-years away, the galaxy's two spiral arms extending from a pronounced central bar have a hook-like appearance in wide-field images. But this mosaicked close-up, constructed from Hubble Space Telescope and European Southern Observatory data, follows the galaxy's structure in amazing detail. Obscuring dust lanes, young blue star clusters and reddish star forming regions surround a core of yellowish light from an older population of stars. The sharp image data also reveal more distant background galaxies seen right through NGC 2442's star clusters and nebulae. The image spans about 75,000 light-years at the estimated distance of NGC 2442.

Tomorrow's picture: birds of a feather

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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VmF Skisters of Mercy ©
An eye for an eye, will make us all blind... Mahatma Ghandi

Τελευταία επεξεργασία από το χρήστη pazo : 17-08-17 στις 09:33
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  #3904  
Παλιά 18-08-17, 09:17
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Τελευταία φορά Online: Σήμερα 09:07
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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

18 Aug 2017



Perseids over the Pyrénées

Image Credit & Copyright: Jean-Francois Graffand

Explanation: This mountain and night skyscape stretches across the French Pyrenees National Park on August 12, near the peak of the annual Perseid meteor shower. The multi-exposure panoramic view was composed from the Col d'Aubisque, a mountain pass, about an hour before the bright gibbous moon rose. Centered is a misty valley and lights from the region's Gourette ski station toward the south. Taken over the following hour, frames capturing some of the night's long bright perseid meteors were aligned against the backdrop of stars and Milky Way.

Tomorrow's picture: 38 years ago

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
__________________
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An eye for an eye, will make us all blind... Mahatma Ghandi
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  #3905  
Παλιά 19-08-17, 09:23
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Τελευταία φορά Online: Σήμερα 09:07
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

19 Aug 2017



Total Solar Eclipse of 1979

Image Credit & Copyright: Jimmy Westlake (Colorado Mountain College)

Explanation: From cold, clear skies over Riverton, Manitoba, Canada, planet Earth, the solar corona surrounds the silhouette of the New Moon in this telescopic snapshot of the total solar eclipse of February 26, 1979. Thirty eight years ago, it was the last total solar eclipse visible from the contiguous United States. The narrow path of totality ran through the northwestern states of Washington, Oregon, Idaho, Montana, and North Dakota before crossing into Canadian provinces Saskatchewan, Manitoba, Ontario and Quebec. Following the upcoming August 21, 2017 total solar eclipse crossing the U.S. from coast to coast, an annular solar eclipse will be seen in the continental United States on October 14, 2023, visible along a route from Northern California to Florida. Then, the next total solar eclipse to touch the continental U.S. will track across 13 states from from Texas to Maine on April 8, 2024.

Tomorrow's picture: eclipse eve

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
__________________
VmF Skisters of Mercy ©
An eye for an eye, will make us all blind... Mahatma Ghandi

Τελευταία επεξεργασία από το χρήστη pazo : Σήμερα στις 09:03
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