NEARCHUS: NASA Image of the Day, May 7th [ 1192 ]

The Hellenic Navy (HN) (Greek: Πολεμικό Ναυτικό, Polemikó Naftikó, abbreviated ΠΝ) is the naval force of Greece, part of the Greek Armed Forces. The modern Greek navy has its roots in the naval forces of various Aegean Islands, which fought in the Greek War of Independence. During the periods of monarchy (1833–1924 and 1936–1973) it was known as the Royal Navy (Βασιλικόν Ναυτικόν, Vasilikón Naftikón, abbreviated ΒΝ).The total displacement of all the navy's vessels is approximately 150,000 tons.The motto of the Hellenic Navy is "Μέγα το της Θαλάσσης Κράτος" from Thucydides' account of Pericles' oration on the eve of the Peloponnesian War. This has been roughly translated as "Great is the country that controls the sea". The Hellenic Navy's emblem consists of an anchor in front of a crossed Christian cross and trident, with the cross symbolizing Greek Orthodoxy, and the trident symbolizing Poseidon, the god of the sea in Greek mythology. Pericles' words are written across the top of the emblem. "The navy, as it represents a necessary weapon for Greece, should only be created for war and aim to victory."...............The Hellenic Merchant Marine refers to the Merchant Marine of Greece, engaged in commerce and transportation of goods and services universally. It consists of the merchant vessels owned by Greek civilians, flying either the Greek flag or a flag of convenience. Greece is a maritime nation by tradition, as shipping is arguably the oldest form of occupation of the Greeks and a key element of Greek economic activity since the ancient times. Nowadays, Greece has the largest merchant fleet in the world, which is the second largest contributor to the national economy after tourism and forms the backbone of world shipping. The Greek fleet flies a variety of flags, however some Greek shipowners gradually return to Greece following the changes to the legislative framework governing their operations and the improvement of infrastructure.

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This is a bilingual blog in English and / or Greek and you can translate any post to any language by pressing on the appropriate flag....Note that there is provided below a scrolling text with the 30 recent posts...Αυτό είναι ένα δίγλωσσο blog στα Αγγλικά η/και στα Ελληνικά και μπορείτε να μεταφράσετε οποιοδήποτε ποστ σε οποιαδήποτε γλώσσα κάνοντας κλικ στη σχετική σημαία. Σημειωτέον ότι παρακάτω παρέχεται και ένα κινούμενο κείμενο με τα 30 πρόσφατα ποστς....This is a bilingual blog in English and / or Greek and you can translate any post to any language by pressing on the appropriate flag....Note that there is provided below a scrolling text with the 30 recent posts...Αυτό είναι ένα δίγλωσσο blog στα Αγγλικά η/και στα Ελληνικά και μπορείτε να μεταφράσετε οποιοδήποτε ποστ σε οποιαδήποτε γλώσσα κάνοντας κλικ στη σχετική σημαία. Σημειωτέον ότι παρακάτω παρέχεται και ένα κινούμενο κείμενο με τα 30 πρόσφατα ποστς.........

Friday, May 7, 2010

NASA Image of the Day, May 7th [ 1192 ]

The latest NASA "Image of the Day" image.

Assembly Line of Stars

The constellation Vulpecula is a veritable entire assembly line of newborn stars. The diffuse glow reveals the widespread cold reservoir of raw material that our Milky Way galaxy has in stock for building stars.

Large-scale turbulence from the giant colliding galactic flows causes this material to condense into the web of filaments seen in this image.

As the stellar material becomes colder and denser, gravitational forces take over and fragment these filaments into chains of stellar embryos that can finally collapse to form baby stars.

These scientific results from the European Space Agency's Herschel infrared space observatory are revealing previously hidden details of star formation.

New images show thousands of distant galaxies furiously building stars and beautiful star-forming clouds draped across the Milky Way.

One image captures an ‘impossible’ star in the act of formation. Presented on May 6, 2010, during a major scientific symposium held at ESA, the results challenge old ideas of star birth, and open new roads for future research.

Herschel’s observation of the star-forming cloud RCW 120 also revealed an embryonic star which may become one of the biggest and brightest stars in our galaxy within the next few hundred thousand years.

The star already contains eight to ten times the mass of our sun and is still surrounded by an additional 2,000 solar masses of gas and dust from which it can feed.

More on the new results and images from ESA's Herschel, visit http://www.esa.int/SPECIALS/Herschel/index.html. Image credit: ESA/Hi-GAL Consortium

Παρασκευή, 7 Μάιος 2010 7:00:00 πμ

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