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Εργαλεία Θεμάτων Αξιολόγηση: Αξιολόγηση θέματος: 4 Ψήφοι, 5,00 κατά μέσο όρο. Τρόποι εμφάνισης
  #1  
Παλιά 06-11-07, 14:46
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Τελευταία φορά Online: 12-11-16 10:12
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Η διαστημική φωτογραφία της ημέρας

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Τελευταία επεξεργασία από το χρήστη pazo : 06-11-07 στις 20:46
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The Following 8 Users Say Thank You to Xenios For This Useful Post:
CORSAIR (01-08-11), Easty (24-11-16), fifisrikos (09-08-14), globalklima (19-04-10), Μηδεν_ενα (18-09-10), maralin (05-02-11), Nikoscot (18-11-10), TASOS131313 (16-04-12)
  #2  
Παλιά 21-05-17, 10:36
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Τελευταία φορά Online: Σήμερα 19:17
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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.

21 May 2017



In the Center of the Lagoon Nebula

Image Credit: Hubble, A. Caulet (ST-ECF, ESA), NASA

Explanation: The center of the Lagoon Nebula is a whirlwind of spectacular star formation. Visible on the lower left, at least two long funnel-shaped clouds, each roughly half a light-year long, have been formed by extreme stellar winds and intense energetic starlight. The tremendously bright nearby star, Hershel 36, lights the area. Vast walls of dust hide and redden other hot young stars. As energy from these stars pours into the cool dust and gas, large temperature differences in adjoining regions can be created generating shearing winds which may cause the funnels. This picture, spanning about 5 light years, was taken in 1995 by the orbiting Hubble Space Telescope. The Lagoon Nebula, also known as M8, lies about 5000 light years distant toward the constellation of Sagittarius.

Tomorrow's picture: canyon sky triangle

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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  #3  
Παλιά 22-05-17, 10:23
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Τελευταία φορά Online: Σήμερα 19:17
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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.

22 May 2017



A Zodiacal Sky over Horseshoe Bend

Image Credit & Copyright: David Lane

Explanation: What's causing the unusual ray of white light extending upward from the central horizon? Dust orbiting the Sun. At certain times of the year, a band of sun-reflecting dust from the inner Solar System rises prominently before sunrise and is called zodiacal light. The dust originates mostly from faint Jupiter-family comets and slowly spirals into the Sun. Pictured, in front of the zodiacal light, is a spectacular view of Horseshoe Bend of the Colorado River. Emitted from well behind the zodiacal light is a spectacular sky that includes many bright stars including Sirius, several blue star clusters including the Pleiades, and an assortment of red nebula including Barnard's Loop in Orion. The 30-image composite was taken earlier this month in nearly complete darkness only six inches from the edge of a dangerous cliff.

Tomorrow's picture: approaching jupiter

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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  #4  
Παλιά 24-05-17, 09:12
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Τελευταία φορά Online: Σήμερα 19:17
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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.

24 May 2017



NGC 4565: Galaxy on Edge

Image Credit & Copyright: Lóránd Fényes

Explanation: Is our Galaxy this thin? We believe so. Magnificent spiral galaxy NGC 4565 is viewed edge-on from planet Earth. Also known as the Needle Galaxy for its narrow profile, bright NGC 4565 is a stop on many telescopic tours of the northern sky, in the faint but well-groomed constellation Coma Berenices. This sharp, colorful image reveals the galaxy's bulging central core cut by obscuring dust lanes that lace NGC 4565's thin galactic plane. An assortment of other background galaxies is included in the pretty field of view, with neighboring galaxy NGC 4562 at the upper left. NGC 4565 itself lies about 40 million light-years distant and spans some 100,000 light-years. Easily spotted with small telescopes, sky enthusiasts consider NGC 4565 to be a prominent celestial masterpiece Messier missed.

Tomorrow's picture: open space

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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  #5  
Παλιά Χθες, 08:35
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Τελευταία φορά Online: Σήμερα 19:17
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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.

25 May 2017



Star Cluster, Spiral Galaxy, Supernova

Image Credit & Copyright: Paolo Demaria

Explanation: A cosmic snapshot from May 19, this colorful telescopic field of view spans about 1 degree or 2 full moons on the sky. Spiky in appearance, foreground Milky Way stars are scattered toward the royal constellation Cepheus while stars of open cluster NGC 6939 gather about 5 thousand light-years in the distance near the top of the frame. Face-on spiral galaxy NGC 6946 is toward the lower left nearly 22 million light-years away. The helpful red lines identify recently discovered supernova SN 2017eaw, the death explosion of a massive star nestled in the galaxy's bluish spiral arms. In fact in the last 100 years, 10 supernovae have been discovered in NGC 6946. By comparison, the average rate of supernovae in our Milky Way is about 1 every 100 years or so. Of course, NGC 6946 is also known as The Fireworks Galaxy.


Tomorrow's picture: pixels in space

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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  #6  
Παλιά Σήμερα, 09:12
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Τελευταία φορά Online: Σήμερα 19:17
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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.

26 May 2017



Spiral Galaxy NGC 6744

Image Credit & Copyright: Daniel Verschatse

Explanation: Big, beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way. It lies some 30 million light-years distant in the southern constellation Pavo appearing as a faint, extended object in small telescopes. We see the disk of the nearby island universe tilted towards our line of sight. This remarkably distinct and detailed galaxy portrait covers an area about the angular size of the full moon. In it, the giant galaxy's yellowish core is dominated by the light from old, cool stars. Beyond the core, spiral arms filled with young blue star clusters and pinkish star forming regions sweep past a smaller satellite galaxy at the lower left, reminiscent of the Milky Way's satellite galaxy the Large Magellanic Cloud.

Tomorrow's picture: colorful clouds + 1

ΠΗΓΗ: http://apod.nasa.gov/apod/astropix.html
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