03 dezembro 2014

Sharpless 249 and the Jellyfish Nebula



Normally faint and elusive, the Jellyfish Nebula is caught in this alluring telescopic mosaic. The scene is anchored right and left by two bright stars, Mu and Eta Geminorum, at the foot of the celestial twin while the Jellyfish Nebula is the brighter arcing ridge of emission with dangling tentacles below and right of center. In fact, the cosmic jellyfish is part of bubble-shaped supernova remnant IC 443, the expanding debris cloud from a massive star that exploded. Light from the explosion first reached planet Earth over 30,000 years ago. Like its cousin in astrophysical waters the Crab Nebula supernova remnant, the Jellyfish Nebula is known to harbor a neutron star, the remnant of the collapsed stellar core. An emission nebula cataloged as Sharpless 249 fills the field at the upper left. The Jellyfish Nebula is about 5,000 light-years away. At that distance, this narrowband composite image would be about 300 light-years across.



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socialjusticekoolaid: HAPPENING NOW (12/3/14): Thousands are...









































socialjusticekoolaid:




HAPPENING NOW (12/3/14): Thousands are pouring into the streets in NYC in memory of Eric Garner and in protest of another killer cop who got away with murder. SHUT. IT. DOWN. #staywoke #farfromover



Livestream



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December 3rd 1894: Robert Louis Stevenson diesOn this day in...



Robert Louis Stevenson (1850 - 1894)





Stevenson's tomb on Mt Vaea on Upolu island in Samoa



December 3rd 1894: Robert Louis Stevenson dies



On this day in 1894, the author Robert Louis Stevenson died aged 44. Stevenson was best known for his works ‘Treasure Island’, ‘Kidnapped’ and ‘The Strange Case of Dr Jekyll & Mr Hyde’. He is considered one of the greatest authors of the 19th century. Stevenson died on the evening of 3rd December 1894. He was talking to his wife and trying to open a bottle of wine when he said “What’s that!” and asked his wife “Does my face look strange?”. He then collapsed and died a few hours later from what was most likely a cerebral hemorrhage.


On Stevenson’s tomb is inscribed his ‘Requiem’:



"Under the wide and starry sky,


Dig the grave and let me lie.

Glad did I live and gladly die,

And I laid me down with a will.

This be the verse you grave for me:

Here he lies where he longed to be;

Home is the sailor, home from sea,

And the hunter home from the hill.”


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Photo




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NASA's Orion Spacecraft Prepared for Launch



NASA’s Orion spacecraft, mounted atop a United Launch Alliance Delta IV Heavy rocket, is visible inside the Mobile Service Tower where the vehicle is undergoing launch preparations, Wednesday, Dec. 3, 2014, Cape Canaveral Air Force Station's Space Launch Complex 37, Florida. Orion is NASA’s new spacecraft built to carry humans, designed to allow us to journey to destinations never before visited by humans, including an asteroid and Mars. Photo Credit: NASA/Bill Ingalls



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Today we’ve got five Edison quotes that will fire you up!

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npr: Viruses can spread through the air in two ways: inside...





npr:



Viruses can spread through the air in two ways: inside large droplets that fall quickly to the ground (red), or inside tiny droplets that float in the air (gray). In the first route, called droplet transmission, the virus can spread only about 3 to 6 feet from an infected person. In the second route, called airborne transmission, the virus can travel 30 feet or more.


Ebola In The Air: What Science Says About How The Virus Spreads


Illustration credit: Adam Cole/NPR



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ANNA FREUD GOOGLE DOODLE Latest Google doodle celebrating the...





ANNA FREUD GOOGLE DOODLE

Latest Google doodle celebrating the life and work of Anna Freud, born on this day in 1895.


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That's One Big Bird


The largest flying bird that ever lived on Earth, Pelagornis sandersi, had a wing-span of 20 feet 11 in. (6.4 meters), which is about two times that of the largest living flying bird, the Royal Albatross


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Brave Last Words

onlooker: "Tu trembles, Bailly?" ("Do you tremble, Bailly?")

Bailly: "Oui, mais c'est seulement de froid." ("Yes, but it is only the cold.")



Bailly was an indisputable leader during the earliest days of the French Revolution. He became unpopular, and after unsuccessfully trying to go into retirement, he was arrested. Bailly was brought before the Revolutionary Tribunal in Paris, speedily tried, and sentenced to death the next day. Those were his last words.
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mahhhvelousscaaarvelis: Spirograph, developed by British...





mahhhvelousscaaarvelis:



Spirograph, developed by British engineer Denys Fisher and first sold in 1965.



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