NEARCHUS: The Whirlpool Galaxy as photographed by NASA..[ 4011 ]

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.........

Thursday, June 5, 2014

The Whirlpool Galaxy as photographed by NASA..[ 4011 ]

By Mike Krumboltz, Yahoo News 18 hours ago Yahoo News

The Whirlpool Galaxy as photographed by NASA's Chandra X-Ray Observatory (NASA).

The Whirlpool Galaxy as photographed by NASA's Chandra X-Ray Observatory (NASA).

This just in: The universe is an amazing, mysterious and — as it turns out — largely purple place.

A new photograph of the Whirlpool Galaxy taken by NASA's Chandra X-Ray Observatory gives amateur astronomers a stunning look at the swirl of stars and space.

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Also known as M51, the galaxy is 30 million light years away from Earth, in the constellation Canes Venatici in the Northern Hemisphere.

Not surprisingly, the image wasn't taken on an iPhone. The picture combines data from more than 232 hours of observation time, according to NASA.

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The image is a composite. Purple indicates regions that feature X-ray sources. Red, green and blue indicate optical data from the Hubble Space Telescope. Previous studies of M51 revealed about 100 X-ray sources, according to NASA. This newest study indicated nearly 500.

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The majority of the X-ray sources are X-ray binaries, NASA explains. "These systems consist of pairs of objects where a compact star, either a neutron star or, more rarely, a black hole, is capturing material from an orbiting companion star."

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While the Whirlpool Galaxy does resemble our own Milky Way, there is at least one notable difference. The upper-right portion of the image shows the galaxy is in the process of merging with another galaxy.

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