HistoryNet.com RSS
ArmchairGeneral.com RSS

HistoryNet.com Articles
America's Civil War
American History
Aviation History
British Heritage
Civil War Times
MHQ
Military History
Vietnam
Wild West
World War II

ACG Online
ACG Magazine
Stuff We Like
War College
History News
Tactics 101
Carlo D'Este
Books

ACG Gaming
Boardgames
PC Game Reviews

ACG Network
Contact Us
Our Newsletter
Meet Our Staff
Advertise With Us

Sites We Support
HistoryNet.com
Once A Marine
The Art of Battle
Game Squad
Mil. History Podcast
Russian Army - WW2
Achtung Panzer!
Mil History Online

Go Back   Armchair General and HistoryNet >> The Best Forums in History > History Library > Research, Reference and Historical Study > Science

Notices and Announcements

Science Discussions about hard science.

Reply
 
Thread Tools Display Modes
  #961  
Old 21 Apr 12, 19:03
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

3 ATs
Image Credit & Copyright: Yuri Beletsky (ESO) Explanation: Despite their resemblance to R2D2, these three are not the droids you're looking for. Instead, the enclosures house 1.8 meter Auxiliary Telescopes (ATs) at Paranal Observatory in the Atacama Desert region of Chile. The ATs are designed to be used for interferometry, a technique for achieving extremely high resolution observations, in concert with the observatory's 8 meter Very Large Telescope units. A total of four ATs are operational, each fitted with a transporter that moves the telescope along a track allowing different arrays with the large unit telescopes. To work as an interferometer, the light from each telescope is then brought to a common focal point by a system of mirrors in underground tunnels. Above these three ATs, the Large and Small Magellanic Clouds are the far far away satellite galaxies of our own Milky Way. In the clear and otherwise dark southern skies, planet Earth's greenish atmospheric airglow stretches faintly along the horizon.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #962  
Old 22 Apr 12, 14:04
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

Flowing Barchan Sand Dunes on Mars
Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA Explanation: When does Mars act like a liquid? Although liquids freeze and evaporate quickly into the thin atmosphere of Mars, persistent winds may make large sand dunes appear to flow and even drip like a liquid. Visible on the above image right are two flat top mesas in southern Mars when the season was changing from Spring to Summer. A light dome topped hill is also visible on the far left of the image. As winds blow from right to left, flowing sand on and around the hills leaves picturesque streaks. The dark arc-shaped droplets of fine sand are called barchans, and are the interplanetary cousins of similar Earth-based sand forms. Barchans can move intact a downwind and can even appear to pass through each other. When seasons change, winds on Mars can kick up dust and are monitored to see if they escalate into another of Mars' famous planet-scale sand storms.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #963  
Old 26 Apr 12, 10:30
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

Evaporating Blobs of the Carina Nebula
Image Credit: ESA/Hubble, NASA Explanation: No, they are not alive -- but they are dying. The unusual blobs found in the Carina nebula, some of which are seen floating on the upper right, might best be described as evaporating. Energetic light and winds from nearby stars are breaking apart the dark dust grains that make the iconic forms opaque. Ironically the blobs, otherwise known as dark molecular clouds, frequently create in their midst the very stars that later destroy them. The floating space mountains pictured above by the orbiting Hubble Space Telescope span a few light months. The Great Nebula in Carina itself spans about 30 light years, lies about 7,500 light years away, and can be seen with a small telescope toward the constellation of Keel (Carina).
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #964  
Old 29 Apr 12, 01:18
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

A Dangerous Sunrise on Gliese 876d
Illustration Credit & Copyright: Inga Nielsen (Hamburg Obs., Gate to Nowhere) Explanation: On planet Gliese 876d, sunrises might be dangerous. Although nobody really knows what conditions are like on this close-in planet orbiting variable red dwarf star Gliese 876, the above artistic illustration gives one impression. With an orbit well inside Mercury and a mass several times that of Earth, Gliese 876d might rotate so slowly that dramatic differences exist between night and day. Gliese 876d is imagined above showing significant volcanism, possibly caused by gravitational tides flexing and internally heating the planet, and possibly more volatile during the day. The rising red dwarf star shows expected stellar magnetic activity which includes dramatic and violent prominences. In the sky above, a hypothetical moon has its thin atmosphere blown away by the red dwarf's stellar wind. Gliese 876d excites the imagination partly because it is one of the few extrasolar planets known to be in or near to the habitable zone of its parent star.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #965  
Old 02 May 12, 09:04
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

Saturn's Moon Helene in Color
Image Credit: NASA/JPL/SSI; Color Composite: Daniel Machácek Explanation: Although its colors may be subtle, Saturn's moon Helene is an enigma in any light. The moon was imaged in unprecedented detail last June as the robotic Cassini spacecraft orbiting Saturn swooped to within a single Earth diameter of the diminutive moon. Although conventional craters and hills appear, the above image also shows terrain that appears unusually smooth and streaked. Planetary astronomers are inspecting these detailed images of Helene to glean clues about the origin and evolution of the 30-km across floating iceberg. Helene is also unusual because it circles Saturn just ahead of the large moon Dione, making it one of only four known Saturnian moons to occupy a gravitational well known as a stable Lagrange point.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #966  
Old 06 May 12, 22:20
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

In the Center of the Omega Nebula
Image Credit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin (STScI), G. Hartig (STScI), ACS Science Team, and ESA Explanation: In the depths of the dark clouds of dust and molecular gas known as the Omega Nebula, stars continue to form. The above image from the Hubble Space Telescope's Advanced Camera for Surveys shows exquisite detail in the famous star-forming region. The dark dust filaments that lace the center of Omega Nebula were created in the atmospheres of cool giant stars and in the debris from supernova explosions. The red and blue hues arise from glowing gas heated by the radiation of massive nearby stars. The points of light are the young stars themselves, some brighter than 100 Suns. Dark globules mark even younger systems, clouds of gas and dust just now condensing to form stars and planets. The Omega Nebula lies about 5000 light years away toward the constellation of Sagittarius. The region shown spans about 3000 times the diameter of our Solar System.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #967  
Old 07 May 12, 06:34
Persephone's Avatar
Persephone Persephone is offline
General of the Forums
United_States
Best Pin-Up Of World War II 
 
Real Name: Maggie
Join Date: May 2010
Location: The Left Coast
Posts: 10,871
Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100]
Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100] Persephone is a pillar of the community [1100]


What you’re seeing is from the NASA/ESA satellite Solar and Heliospheric Observatory, or SOHO. It stares at the Sun all the time, monitoring its activity. This image, from May 3, 2012 is from the LASCO C3, one of the cameras on board. It has a little metal paddle (called an occulter) to block the ferocious light of the Sun; that’s the black bar and circle. The white outline is the position of the Sun and its size in the image.

You can see an emerging coronal mass ejection on the left: that’s the bulb-shaped thingy. It’s actually an incredibly violent expulsion of a billion tons of subatomic particles hurled away at high speed due to the explosive discharge of the Sun’s magnetic field.

You can also see streamers coming from the Sun; those are places where particles flow freely into space from the Sun. Basically, the magnetic field of the Sun trails into space in those locations, allowing the wind to escape.

Look on the left. See that weird dot with the horizontal line through it? That’s Jupiter! The line is not real; it’s where the camera got overexposed by the planet (digital detectors — like your phone camera — convert photons of light into electrons, and if a source is too bright, the electrons overflow the pixels like water from a bucket. The way the camera works, the electrons flow along the horizontal grid of pixels, creating these lines. This is called "blooming").

Jupiter has been gracing our sky for months, but has been getting further west every night, closing the apparent distance between it and the Sun. It’s on the opposite side of the Sun from us, at a distance of almost 900 million kilometers (550 million miles).
__________________

"A wise man can learn more from a foolish question than a fool can learn from a wise answer." ~ Bruce Lee

Reply With Quote
  #968  
Old 09 May 12, 00:49
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

Supermoon Over Paris
Image Credit & Copyright: VegaStar Carpentier Explanation: Did you see that full Moon Saturday night? Dubbed a supermoon, the latest fully illuminated moon appeared slightly larger than usual because it occurred unusually near the closest point in its orbit to Earth. Pictured above, the supermoon was captured Saturday night rising behind the top of the Eiffel Tower in Paris, France. Of course, the angular extent of the moon in comparison to foreground objects can be adjusted just by changing the observer's distance to the foreground object. When compared to nearby objects the moon may appear tiny, but when compared to distant objects -- the moon may appear huge. Next month yet another full moon is expected, this one appearing about one percent smaller.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #969  
Old 13 May 12, 08:34
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

Spiral Galaxy NGC 1672 from Hubble
Image Credit: NASA, ESA, Hubble Heritage Team (STScI/AURA) Hubble Heritage (STScI/AURA);
Acknowledgment: L. Jenkins (GSFC/U. Leicester) Explanation: Many spiral galaxies have bars across their centers. Even our own Milky Way Galaxy is thought to have a modest central bar. Prominently barred spiral galaxy NGC 1672, pictured above, was captured in spectacular detail in image taken by the orbiting Hubble Space Telescope. Visible are dark filamentary dust lanes, young clusters of bright blue stars, red emission nebulas of glowing hydrogen gas, a long bright bar of stars across the center, and a bright active nucleus that likely houses a supermassive black hole. Light takes about 60 million years to reach us from NGC 1672, which spans about 75,000 light years across. NGC 1672, which appears toward the constellation of the Dolphinfish (Dorado), is being studied to find out how a spiral bar contributes to star formation in a galaxy's central regions.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #970  
Old 13 May 12, 13:37
G David Bock's Avatar
G David Bock G David Bock is offline
General of the Forums
United_States
5 Year Service Ribbon Best Pin-Up Of World War II 
 
Real Name: G David Bock
Join Date: Jul 2007
Location: Bellingham, Washington
Posts: 7,744
G David Bock is a jewel in the rough [500]
G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500] G David Bock is a jewel in the rough [500]
This may be a temp. unless someone wants to cut and paste here,
Milky Way over Stonehenge Memorial
http://www.coasttocoastam.com/photo/...henge-Memorial
__________________
Whiskey for my men, and beer for my horses.

Who controls the Spice, controls the Universe!
Reply With Quote
Sponsored Links

  #971  
Old 14 May 12, 23:11
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Quote:
Originally Posted by G David Bock View Post
This may be a temp. unless someone wants to cut and paste here,
Milky Way over Stonehenge Memorial
http://www.coasttocoastam.com/photo/...henge-Memorial




Nice One!
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #972  
Old 14 May 12, 23:12
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

The Hydra Cluster of Galaxies
Image Credit & Copyright: Angus Lau Explanation: Two stars within our own Milky Way galaxy anchor the foreground of this cosmic snapshot. Beyond them lie the galaxies of the Hydra Cluster. In fact, while the spiky foreground stars are hundreds of light-years distant, the Hydra Cluster galaxies are over 100 million light-years away. Three large galaxies near the cluster center, two yellow ellipticals (NGC 3311, NGC 3309) and one prominent blue spiral (NGC 3312), are the dominant galaxies, each about 150,000 light-years in diameter. An intriguing overlapping galaxy pair cataloged as NGC 3314 is just above and left of NGC 3312. Also known as Abell 1060, the Hydra galaxy cluster is one of three large galaxy clusters within 200 million light-years of the Milky Way. In the nearby universe, galaxies are gravitationally bound into clusters which themselves are loosely bound into superclusters that in turn are seen to align over even larger scales. At a distance of 100 million light-years this picture would be about 1.3 million light-years across.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #973  
Old 16 May 12, 07:35
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

Star Formation in the Tarantula Nebula
Image Credit: NASA, ESA, ESO, D. Lennon (ESA/STScI) et al., and the Hubble Heritage Team (STScI/AURA) Explanation: The largest, most violent star forming region known in the whole Local Group of galaxies lies in our neighboring galaxy the Large Magellanic Cloud (LMC). Were the Tarantula Nebula at the distance of the Orion Nebula -- a local star forming region -- it would take up fully half the sky. Also called 30 Doradus, the red and pink gas indicates a massive emission nebula, although supernova remnants and dark nebula also exist there. The bright knot of stars left of center is called R136 and contains many of the most massive, hottest, and brightest stars known. The above image is one of the largest mosaics ever created by observations of the Hubble Space Telescope and has revealed unprecedented details of this enigmatic star forming region. The image is being released to celebrate the 22nd anniversary of Hubble's launch.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #974  
Old 17 May 12, 10:24
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

Herschel's Cygnus X
Credit: ESA/PACS/SPIRE/ Martin Hennemann & Frédérique Motte,
Laboratoire AIM Paris-Saclay, CEA/Irfu - CNRS/INSU - Univ. Paris Diderot, France Explanation: The Herschel Space Observatory's infrared view of Cygnus X spans some 6x2 degrees across one of the closest, massive star forming regions in the plane of our Milky Way galaxy. In fact, the rich stellar nursery already holds the massive star cluster known as the Cygnus OB2 association. But those stars are more evident by the region cleared by their energetic winds and radiation near the bottom center of this field, and are not detected by Herschel instruments operating at long infrared wavelengths. Herschel does reveal the region's complex filaments of cool gas and dust that lead to dense locations where new massive stars are forming. Cygnus X lies some 4500 light-years away toward the heart of the northern constellation of the Swan. At that distance this picture would be almost 500 light-years wide.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
  #975  
Old 18 May 12, 18:26
Torien's Avatar
Torien Torien is offline
General of the Forums
United_States
Distinguished Service Award 5 Year Service Ribbon 100 Greatest Generals, 2008 Most Decisive Battle Campaign, 2008 
Greatest Westerns Campaign Greatest Spy Movies Campaign Greatest Blunders Campaign Best Pin-Up Of World War II 
SPQR Campaign 
 
Join Date: Jan 2008
Location: North Canton, Ohio
Posts: 13,752
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]
Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+] Torien has achieved enlightenment [1200+]

GALEX: The Andromeda Galaxy
Credit: GALEX, JPL-Caltech, NASA Explanation: A mere 2.5 million light-years away, the Andromeda Galaxy really is just next door as large galaxies go. So close, and spanning some 260,000 light-years, it took 11 different image fields from the Galaxy Evolution Explorer (GALEX) satellite's telescope to produce this gorgeous portrait of the spiral galaxy in ultraviolet light. While its spiral arms stand out in visible light images of Andromeda (also known as M31), the arms look more like rings in the GALEX ultraviolet view, dominated by hot, young, massive stars. As sites of intense star formation, the rings have been interpreted as evidence Andromeda collided with its smaller neighboring elliptical galaxy M32 more than 200 million years ago. The large Andromeda galaxy and our own Milky Way are the dominant members of the local galaxy group.
__________________
History is the version of past events that people have decided to agree upon. Napoleon Bonaparte
_________
BoRG
__________
"I am Arthur, King of the Britons!"
Reply With Quote
Reply

Please bookmark this thread if you enjoyed it!


Thread Tools
Display Modes



Forum Jump

All times are GMT -4. The time now is 23:07.
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2014, vBulletin Solutions, Inc.