OFF-Topic / Misc.Discuss Hubble photo's in the Current forums; I thought this picture was good enought o post for all to enjoy.
http://www.spaceflightnow.com/news/n...8galaxyonedge/
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This is a unique Hubble Space Telescope view of the disk galaxy NGC 5866 tilted nearly edge-on to our line-of-sight.
Hubble's sharp vision reveals a crisp dust lane dividing the galaxy into two halves. The image highlights the galaxy's structure: a subtle, reddish bulge surrounding a bright nucleus, a blue disk of stars running parallel to the dust lane, and a transparent outer halo.
Some faint, wispy trails of dust can be seen meandering away from the disk of the galaxy out into the bulge and inner halo of the galaxy. The outer halo is dotted with numerous gravitationally bound clusters of nearly a million stars each, known as globular clusters. Background galaxies that are millions to billions of light-years farther away than NGC 5866 are also seen through the halo.
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Great pics syscom! Hubble is being replaced (I think) by a newer teloscope that will be able to take even better photos, I for one look forward to seeing them.
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The Great Nebula of orion has always held a fascination for me.
This is a stellar nursury with proto-stars being formed and lots of newly minted stars illuminating this grand object of the cosmos.
This dramatic image offers a peek inside a cavern of roiling dust and gas where thousands of stars are forming. The image, taken by the Advanced Camera for Surveys (ACS) aboard NASA's Hubble Space Telescope, represents the sharpest view ever taken of this region, called the Orion Nebula. More than 3,000 stars of various sizes appear in this image. Some of them have never been seen in visible light. These stars reside in a dramatic dust-and-gas landscape of plateaus, mountains, and valleys that are reminiscent of the Grand Canyon.
The Orion Nebula is a picture book of star formation, from the massive, young stars that are shaping the nebula to the pillars of dense gas that may be the homes of budding stars. The bright central region is the home of the four heftiest stars in the nebula. The stars are called the Trapezium because they are arranged in a trapezoid pattern. Ultraviolet light unleashed by these stars is carving a cavity in the nebula and disrupting the growth of hundreds of smaller stars. Located near the Trapezium stars are stars still young enough to have disks of material encircling them. These disks are called protoplanetary disks or "proplyds" and are too small to see clearly in this image. The disks are the building blocks of solar systems.
The bright glow at upper left is from M43, a small region being shaped by a massive, young star's ultraviolet light. Astronomers call the region a miniature Orion Nebula because only one star is sculpting the landscape. The Orion Nebula has four such stars. Next to M43 are dense, dark pillars of dust and gas that point toward the Trapezium. These pillars are resisting erosion from the Trapezium's intense ultraviolet light. The glowing region on the right reveals arcs and bubbles formed when stellar winds - streams of charged particles ejected from the Trapezium stars — collide with material.
The faint red stars near the bottom are the myriad brown dwarfs that Hubble spied for the first time in the nebula in visible light. Sometimes called "failed stars," brown dwarfs are cool objects that are too small to be ordinary stars because they cannot sustain nuclear fusion in their cores the way our Sun does. The dark red column, below, left, shows an illuminated edge of the cavity wall.
The Orion Nebula is 1,500 light-years away, the nearest star-forming region to Earth. Astronomers used 520 Hubble images, taken in five colors, to make this picture. They also added ground-based photos to fill out the nebula. The ACS mosaic covers approximately the apparent angular size of the full moon.
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A Glowing Pool of Light: Planetary Nebula NGC 3132
NGC 3132 is a striking example of a planetary nebula. This expanding cloud of gas, surrounding a dying star, is known to amateur astronomers in the southern hemisphere as the "Eight-Burst" or the "Southern Ring" Nebula.
The name "planetary nebula" refers only to the round shape that many of these objects show when examined through a small visual telescope. In reality, these nebulae have little or nothing to do with planets, but are instead huge shells of gas ejected by stars as they near the ends of their lifetimes. NGC 3132 is nearly half a light year in diameter, and at a distance of about 2000 light years is one of the nearer known planetary nebulae. The gases are expanding away from the central star at a speed of 9 miles per second.
This image, captured by NASA's Hubble Space Telescope, clearly shows two stars near the center of the nebula, a bright white one, and an adjacent, fainter companion to its upper right. (A third, unrelated star lies near the edge of the nebula.) The faint partner is actually the star that has ejected the nebula. This star is now smaller than our own Sun, but extremely hot. The flood of ultraviolet radiation from its surface makes the surrounding gases glow through fluorescence. The brighter star is in an earlier stage of stellar evolution, but in the future it will probably eject its own planetary nebula.
In the Heritage Team's rendition of the Hubble image, the colors were chosen to represent the temperature of the gases. Blue represents the hottest gas, which is confined to the inner region of the nebula. Red represents the coolest gas, at the outer edge. The Hubble image also reveals a host of filaments, including one long one that resembles a waistband, made out of dust particles which have condensed out of the expanding gases. The dust particles are rich in elements such as carbon. Eons from now, these particles may be incorporated into new stars and planets when they form from interstellar gas and dust. Our own Sun may eject a similar planetary nebula some 6 billion years from now.
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This active region of star formation in the Large Magellanic Cloud (LMC), as photographed by NASA's Hubble Space Telescope, unveils wispy clouds of hydrogen and oxygen that swirl and mix with dust on a canvas of astronomical size. The LMC is a satellite galaxy of the Milky Way.
This particular region within the LMC, referred to as N 180B, contains some of the brightest known star clusters. The hottest blue stars can be brighter than a million of our Suns. Their intense energy output generates not only harsh ultraviolet radiation but also incredibly strong stellar "winds" of high-speed, charged particles that blow into space. The ultraviolet radiation ionizes the interstellar gas and makes it glow, while the winds can disperse the interstellar gas across tens or hundreds of light-years. Both actions are evident in N 180B.
Also visible etched against the glowing hydrogen and oxygen gases are 100 light-year-long dust streamers that run the length of the nebula, intersecting the core of the cluster near the center of the image. Perpendicular to the direction of the dark streamers, bright orange rims of compact dust clouds appear near the bottom right of and top left corners of the image. These dark concentrations are on the order of a few light-years in size. Also visible among the dust clouds are so-called "elephant trunk" stalks of dust. If the pressure from the nearby stellar winds is great enough to compress this material and cause it to gravitationally contract, star formation might be triggered in these small dust clouds. These dust clouds are evidence that this is still a young star-formation region.
This image was taken with Hubble's Wide Field Planetary Camera 2 in 1998 using filters that isolate light emitted by hydrogen and oxygen gas. To create a color composite, the data from the hydrogen filter were colorized red, the oxygen filter were colorized blue, and a combination of the two filters averaged together was colorized green. The amalgamation yields pink and orange hydrogen clouds set amid a field of soft blue oxygen gas. Dense dust clouds block starlight and glowing gas from our view point.
__________________ "Pilot to copilot..... what are those mountain goats doing up here in the clouds?"
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CAPE CANAVERAL, Fla. (AP) -- NASA will send a space shuttle to repair the 16-year-old Hubble Space Telescope, agency Administrator Michael Griffin announced Tuesday, reversing his predecessor's decision to nix the mission.
Griffin's announcement was greeted eagerly by astronomers who feared Hubble would deteriorate before the end of the decade without new sensors and replacements for its aging batteries.
The rehab mission, likely launching in May 2008 using space shuttle Discovery, would keep Hubble working until about 2013. Its estimate cost is $900 million.
The Hubble telescope has captured some of the most spectacular images of the universe, popularizing astronomy while at the same time advancing our understanding of space.
It has enabled direct observation of the universe as it was 12 billion years ago, discovered black holes at the center of many galaxies, provided measurements that helped establish the size and age of the universe and offered evidence that the expansion of the universe is accelerating.
"The Hubble telescope has been the greatest telescope since Galileo invented the first one," said U.S. Sen. Barbara Mikulski, D-Md., a fierce champion of Hubble, which is operated out of Maryland. "It has gone to look at places in the universe that we didn't know existed before."
The repair mission crew will include three veterans of the last Hubble mission, in 2002, and four astronauts on their first space trip, Griffin said.
Former NASA Administrator Sean O'Keefe had canceled a Hubble repair mission in the wake of the Columbia shuttle disaster that killed seven astronauts in 2003. O'Keefe believed the risks were too great and the remaining shuttle missions should focus on completing construction of the international space station.
Griffin, however, said Tuesday that he was convinced the Hubble mission could be conducted after the last three shuttle flights demonstrated astronauts' ability to inspect the spacecraft in-flight and make repairs, even in hard-to-reach places.
"The safety of our crew conducting this mission will be as much as we can possibly do," Griffin said. "We're not going to risk a crew in order to do a Hubble mission."
Unlike the remaining 14 shuttle flights needed to finish space station construction, astronauts going to Hubble wouldn't have a refuge in the event of a catastrophic problem like the one that doomed Columbia. NASA would have another shuttle on the launch pad, ready to make an emergency rescue trip in case of trouble.
The Hubble mission would add two new camera instruments to the telescope, upgrade aging batteries and stabilizing equipment, add new guidance sensors and repair a light-separating spectrograph. Griffin named the crew members as veterans Scott Altman, John Grunsfeld and Michael Massimino, and rookies Greg Johnson, Andrew Feustel, Mike Good and Megan McArthur.
Hubble was launched in 1990 with a faulty primary mirror that prevented it from focusing, and it quickly became the butt of jokes. Three years later, astronauts Endeavour fixed the telescope's blurred vision in the first of four repair trips.
"The Hubble has been a roller coaster," said NASA Goddard Space Flight Center director Ed Weiler, Hubble's chief scientist from 1979 to 1998. "It really has."
__________________ "Pilot to copilot..... what are those mountain goats doing up here in the clouds?"
And I like this one. Rather humbling. I too read that NASA gave the go ahead to repair Hubble in 2008. Best $900 million they will ever spend.
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Here's some more pics (not hubble obviously). They offer somewhat of an understanding of how insignificant our little world is in the scheme of things. Now take the last pic and wrap your mind around my post above. Incomprehensible.
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"Some people spend an entire lifetime wondering if
they made a difference in the world. But, the [U.S.]
Marines don't have that problem."
-- Ronald Reagan
Have no idea why it posted the pics left to right. Sorry.
__________________
"Some people spend an entire lifetime wondering if
they made a difference in the world. But, the [U.S.]
Marines don't have that problem."
-- Ronald Reagan
NASA's Spitzer and Hubble Space Telescopes have teamed up to expose the chaos that baby stars are creating 1,500 light-years away in a cosmic cloud called the Orion nebula.
This striking infrared and visible-light composite indicates that four monstrously massive stars at the center of the cloud may be the main culprits in the familiar Orion constellation. The stars are collectively called the "Trapezium." Their community can be identified as the yellow smudge near the center of the image.
Swirls of green in Hubble's ultraviolet and visible-light view reveal hydrogen and sulfur gas that have been heated and ionized by intense ultraviolet radiation from the Trapezium's stars. Meanwhile, Spitzer's infrared view exposes carbon-rich molecules called polycyclic aromatic hydrocarbons in the cloud. These organic molecules have been illuminated by the Trapezium's stars, and are shown in the composite as wisps of red and orange. On Earth, polycyclic aromatic hydrocarbons are found on burnt toast and in automobile exhaust.
Together, the telescopes expose the stars in Orion as a rainbow of dots sprinkled throughout the image. Orange-yellow dots revealed by Spitzer are actually infant stars deeply embedded in a cocoon of dust and gas. Hubble showed less embedded stars as specks of green, and foreground stars as blue spots.
Stellar winds from clusters of newborn stars scattered throughout the cloud etched all of the well-defined ridges and cavities in Orion. The large cavity near the right of the image was most likely carved by winds from the Trapezium's stars.
Located 1,500 light-years away from Earth, the Orion nebula is the brightest spot in the sword of the Orion, or the "Hunter" constellation. The cosmic cloud is also our closest massive star-formation factory, and astronomers believe it contains more than 1,000 young stars.
The Orion constellation is a familiar sight in the fall and winter night sky in the northern hemisphere. The nebula is invisible to the unaided eye, but can be resolved with binoculars or small telescopes.
This image is a false-color composite where light detected at wavelengths of 0.43, 0.50, and 0.53 microns is blue. Light at wavelengths of 0.6, 0.65, and 0.91 microns is green. Light at 3.6 microns is orange, and 8.0 microns is red.
__________________ "Pilot to copilot..... what are those mountain goats doing up here in the clouds?"
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