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Pillars of Creation is a photograph taken by the #Hubble #Space #Telescope of elephant trunks of interstellar gas and dust in the Eagle #Nebula, some 6,500-7,000 light years from #Earth. They are so named because the gas and dust are in the process of creating new stars, while also being eroded by the light from nearby stars that have recently formed. Taken on April 1, 1995, it was named one of the top ten photographs from Hubble by #Space.com. The #astronomersresponsible for the photo were Jeff Hester and Paul Scowen from Arizona State University. The region was rephotographed by #ESA's Herschel Space Observatory in 2011, and again by the Hubble in 2014 (see below).
#NASA #Esa #Space #Nebula
#NASA #Esa #Space #Nebula
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Dwarf Galaxy NGC 4625
In this image, taken by the Hubble Space Telescope, you can see NGC 4625. It is a dwarf galaxy, located in the constellation of Canes Venatici (The Hunting Dogs. https://goo.gl/fuxi94), about 30 million light-years away from Earth.
NGC 4625 is showing just one spiral arm, another oddity is the fact that its disk is about four times as big in the ultraviolet part of the spectrum, compared to the visible part of it. A lot of young and very hot stars, mainly producing ultraviolet radiation, are "hiding" in this part.
The reason for this peculiarities it not totally understood, however interaction with the nearby galaxy NGC 4618 (https://goo.gl/YTyMWa) could be a factor in it, as the gas it the outermost regions of NGC 4618 seems to have been affected by NGC 4625.
NGC 4625 was discovered April 9th, 1787, by the English astronomer William Herschel (https://goo.gl/E9YsKH).
More on it here:
https://www.spacetelescope.org/images/potw1746a/
https://en.wikipedia.org/wiki/NGC_4625
More on dwarf galaxies:
https://en.wikipedia.org/wiki/Dwarf_galaxy
More on the morphological classification of galaxies:
https://en.wikipedia.org/wiki/Galaxy_morphological_classification
Image credit: NGC 4625 ESA/Hubble & NASA https://goo.gl/bG7vfn CC BY 4.0 https://goo.gl/hNRHCd
Thank you for your interest in this Astronomy/Astrophysics collection. Maybe add me on Google+ (+Pierre Markuse) and Twitter (https://twitter.com/Pierre_Markuse) or have a look at the Space/Space Technology collection here: https://goo.gl/5KP0wx
#science #astronomy #astrophysics #ngc4625 #galaxy #dwarfgalaxy #hubble #hst #space #photography #ngc4618
In this image, taken by the Hubble Space Telescope, you can see NGC 4625. It is a dwarf galaxy, located in the constellation of Canes Venatici (The Hunting Dogs. https://goo.gl/fuxi94), about 30 million light-years away from Earth.
NGC 4625 is showing just one spiral arm, another oddity is the fact that its disk is about four times as big in the ultraviolet part of the spectrum, compared to the visible part of it. A lot of young and very hot stars, mainly producing ultraviolet radiation, are "hiding" in this part.
The reason for this peculiarities it not totally understood, however interaction with the nearby galaxy NGC 4618 (https://goo.gl/YTyMWa) could be a factor in it, as the gas it the outermost regions of NGC 4618 seems to have been affected by NGC 4625.
NGC 4625 was discovered April 9th, 1787, by the English astronomer William Herschel (https://goo.gl/E9YsKH).
More on it here:
https://www.spacetelescope.org/images/potw1746a/
https://en.wikipedia.org/wiki/NGC_4625
More on dwarf galaxies:
https://en.wikipedia.org/wiki/Dwarf_galaxy
More on the morphological classification of galaxies:
https://en.wikipedia.org/wiki/Galaxy_morphological_classification
Image credit: NGC 4625 ESA/Hubble & NASA https://goo.gl/bG7vfn CC BY 4.0 https://goo.gl/hNRHCd
Thank you for your interest in this Astronomy/Astrophysics collection. Maybe add me on Google+ (+Pierre Markuse) and Twitter (https://twitter.com/Pierre_Markuse) or have a look at the Space/Space Technology collection here: https://goo.gl/5KP0wx
#science #astronomy #astrophysics #ngc4625 #galaxy #dwarfgalaxy #hubble #hst #space #photography #ngc4618
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Hubble Space Telescope Spots Cosmic Snake
http://www.sci-news.com/astronomy/hubble-cosmic-snake-05447.html
#astronomy #space #science #Hubble #NASA #ESA
http://www.sci-news.com/astronomy/hubble-cosmic-snake-05447.html
#astronomy #space #science #Hubble #NASA #ESA
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"Using Hubble, astronomers recently looked at several such images of the Cosmic Snake, each with a different level of magnification." | SciTech Daily
#galaxies #GravitationalLensing #Hubble
#galaxies #GravitationalLensing #Hubble
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EDWIN HUBBLE, November 20, 1889 - September 28, 1953
#EdwinHubble #EdwinPowellHubble #Hubble #Missouri #USA #astronomer #extragalacticAstronomy #cosmologist #recessionalVelocity #HubblesLaw #HubbleSequence #HubbleSpace #nebulae #galaxies #MadeleineBianchi #EricMaurer #photographer #SkatetrixSportCompany #videodvd #birthday #remember #socialnetwork
#EdwinHubble #EdwinPowellHubble #Hubble #Missouri #USA #astronomer #extragalacticAstronomy #cosmologist #recessionalVelocity #HubblesLaw #HubbleSequence #HubbleSpace #nebulae #galaxies #MadeleineBianchi #EricMaurer #photographer #SkatetrixSportCompany #videodvd #birthday #remember #socialnetwork
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From Newborn Universe..
By +Giovanni Lo Cascio
#Astronomy #NASA #Hubble #ESA #SETI #ISS #Science #Science64
By +Giovanni Lo Cascio
#Astronomy #NASA #Hubble #ESA #SETI #ISS #Science #Science64
HST.. From Newborn Universe..
Two of NASA's Great Observatories, the Spitzer and Hubble Space Telescopes, have teamed up to "weigh" the stars in several distant galaxies. One of these galaxies, among the most distant ever seen, appears to be unusually massive and mature for its place in the young universe.
This came as a surprise to astronomers. The earliest galaxies in the universe are commonly thought to have been much smaller associations of stars that gradually merged to build large galaxies like our Milky Way.
"This galaxy, named HUDF-JD2, appears to have 'bulked up' amazingly quickly, within the first few hundred million years after the big bang. It made about eight times more mass in stars than are found in our own Milky Way today, and then, just as suddenly, it stopped forming new stars," said Dr. Bahram Mobasher of the Space Telescope Science Institute, Baltimore, and the European Space Agency, Paris.
The galaxy was pinpointed among approximately 10,000 others in a small patch of sky called the Hubble Ultra Deep Field. The galaxy is believed to be about as far away as the most distant known galaxies. It represents an era when the universe was only 800 million years old. That is about five percent of the universe's age of 14 billion years.
Scientists studying the Ultra Deep Field found this galaxy in Hubble's infrared images. They expected it to be young and small, like other known galaxies at similar distances. Instead, they found evidence the galaxy is remarkably mature and much more massive. Its stars appear to have been in place for a long time.
Hubble's optical-light Ultra Deep Field image is the deepest image ever taken, yet this galaxy was not evident. This indicates much of the galaxy's optical light has been absorbed by traveling billions of light-years through intervening hydrogen gas. The galaxy was detected using Hubble's near-infrared camera and multi-object spectrometer. It was also detected by an infrared camera on the Very Large Telescope at the European Southern Observatory. At those longer infrared wavelengths, it is very faint and red.
The big surprise is how much brighter the galaxy is in longer-wavelength infrared images from the Spitzer Space Telescope. Spitzer is sensitive to the light from older, redder stars, which should make up most of the mass in a galaxy. The infrared brightness of the galaxy suggests it is massive. "This would be quite a big galaxy even today," said Dr. Mark Dickinson of the National Optical Astronomy Observatory, Tucson, Ariz. "At a time when the universe was only 800 million years old, it's positively gigantic."
Spitzer observations were also independently reported by Dr. Laurence Eyles from the University of Exeter in the United Kingdom and Dr. Haojing Yan of the Spitzer Science Center, Pasadena, Calif. They also revealed evidence for mature stars in more ordinary, less massive galaxies at similar distances, when the universe was less than one billion years old.
The new observations reported by Mobasher extend this notion of surprisingly mature "baby galaxies" to an object which is perhaps 10 times more massive, and which seemed to form its stars even earlier in the history of the universe.
Mobasher's team estimated the distance to this galaxy by combining information provided by the Hubble, Spitzer, and Very Large Telescope observations. The relative brightness of the galaxy at different wavelengths is influenced by the expanding universe and allows astronomers to estimate its distance. They can also get an idea of the make-up of the galaxy in terms of the mass and age of its stars.
While astronomers generally believe most galaxies were built piecewise by mergers of smaller galaxies, the discovery of this object suggests at least a few galaxies formed quickly long ago. For such a large galaxy, this would have been a tremendously explosive event of star birth.
JPL manages the Spitzer Space Telescope mission for NASA. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology in Pasadena.The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency. The Very Large Telescope is a project of the European Southern Observatory at the Paranal Observatory in Atacama, Chile.
Credit : NASA / JPL Caltech
Two of NASA's Great Observatories, the Spitzer and Hubble Space Telescopes, have teamed up to "weigh" the stars in several distant galaxies. One of these galaxies, among the most distant ever seen, appears to be unusually massive and mature for its place in the young universe.
This came as a surprise to astronomers. The earliest galaxies in the universe are commonly thought to have been much smaller associations of stars that gradually merged to build large galaxies like our Milky Way.
"This galaxy, named HUDF-JD2, appears to have 'bulked up' amazingly quickly, within the first few hundred million years after the big bang. It made about eight times more mass in stars than are found in our own Milky Way today, and then, just as suddenly, it stopped forming new stars," said Dr. Bahram Mobasher of the Space Telescope Science Institute, Baltimore, and the European Space Agency, Paris.
The galaxy was pinpointed among approximately 10,000 others in a small patch of sky called the Hubble Ultra Deep Field. The galaxy is believed to be about as far away as the most distant known galaxies. It represents an era when the universe was only 800 million years old. That is about five percent of the universe's age of 14 billion years.
Scientists studying the Ultra Deep Field found this galaxy in Hubble's infrared images. They expected it to be young and small, like other known galaxies at similar distances. Instead, they found evidence the galaxy is remarkably mature and much more massive. Its stars appear to have been in place for a long time.
Hubble's optical-light Ultra Deep Field image is the deepest image ever taken, yet this galaxy was not evident. This indicates much of the galaxy's optical light has been absorbed by traveling billions of light-years through intervening hydrogen gas. The galaxy was detected using Hubble's near-infrared camera and multi-object spectrometer. It was also detected by an infrared camera on the Very Large Telescope at the European Southern Observatory. At those longer infrared wavelengths, it is very faint and red.
The big surprise is how much brighter the galaxy is in longer-wavelength infrared images from the Spitzer Space Telescope. Spitzer is sensitive to the light from older, redder stars, which should make up most of the mass in a galaxy. The infrared brightness of the galaxy suggests it is massive. "This would be quite a big galaxy even today," said Dr. Mark Dickinson of the National Optical Astronomy Observatory, Tucson, Ariz. "At a time when the universe was only 800 million years old, it's positively gigantic."
Spitzer observations were also independently reported by Dr. Laurence Eyles from the University of Exeter in the United Kingdom and Dr. Haojing Yan of the Spitzer Science Center, Pasadena, Calif. They also revealed evidence for mature stars in more ordinary, less massive galaxies at similar distances, when the universe was less than one billion years old.
The new observations reported by Mobasher extend this notion of surprisingly mature "baby galaxies" to an object which is perhaps 10 times more massive, and which seemed to form its stars even earlier in the history of the universe.
Mobasher's team estimated the distance to this galaxy by combining information provided by the Hubble, Spitzer, and Very Large Telescope observations. The relative brightness of the galaxy at different wavelengths is influenced by the expanding universe and allows astronomers to estimate its distance. They can also get an idea of the make-up of the galaxy in terms of the mass and age of its stars.
While astronomers generally believe most galaxies were built piecewise by mergers of smaller galaxies, the discovery of this object suggests at least a few galaxies formed quickly long ago. For such a large galaxy, this would have been a tremendously explosive event of star birth.
JPL manages the Spitzer Space Telescope mission for NASA. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology in Pasadena.The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency. The Very Large Telescope is a project of the European Southern Observatory at the Paranal Observatory in Atacama, Chile.
Credit : NASA / JPL Caltech
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