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Beatriz Villarroel talks about her #SETI research looking for disappearing stars. Did she find one?
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El Instituto #SETI
#SetiAtHome .Next #SETITalks
#SearchforExtraterrestrialIntelligence (#SETI). "Diamond" Planets May Have Hosted the First Life in the Universe https://www.outerplaces.com/science/item/12384-carbon-planets-may-have-hosted-the-first-life-in-the-universe
#SetiAtHome .Next #SETITalks
#SearchforExtraterrestrialIntelligence (#SETI). "Diamond" Planets May Have Hosted the First Life in the Universe https://www.outerplaces.com/science/item/12384-carbon-planets-may-have-hosted-the-first-life-in-the-universe
24/11/17
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El Instituto #SETI
#SetiAtHome .Next #SETITalks
#SearchforExtraterrestrialIntelligence (#SETI).
Universe’s first life on diamond planets? http://earthsky.org/space/universes-first-life-on-diamond-planets
#SetiAtHome .Next #SETITalks
#SearchforExtraterrestrialIntelligence (#SETI).
Universe’s first life on diamond planets? http://earthsky.org/space/universes-first-life-on-diamond-planets
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SETI@home is a #scientific #experiment, based at #UCBerkeley, that uses Internet-connected #computers in the #SearchforExtraterrestrialIntelligence (#SETI). You can participate by running a free program that downloads and analyzes #radiotelescope #data
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Mega galactic fusion..
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.. Mega galactic fusion ..
The subject of this NASA/ESA Hubble Space Telescope image is known as NGC 3597. It is the product of a collision between two good-sized galaxies, and is slowly evolving to become a giant elliptical galaxy. This type of galaxy has grown more and more common as the universe has evolved, with initially small galaxies merging and progressively building up into larger galactic structures over time.
NGC 3597 is located approximately 150 million light-years away in the constellation of Crater (The Cup). Astronomers study NGC 3597 to learn more about how elliptical galaxies form — many ellipticals began their lives far earlier in the history of the universe. Older ellipticals are nicknamed “red and dead” by astronomers because these bloated galaxies are not anymore producing new, bluer stars, and are thus packed full of old and redder stellar populations.
Before infirmity sets in, some freshly formed elliptical galaxies experience a final flush of youth, as is the case with NGC 3597. Galaxies smashing together pool their available gas and dust, triggering new rounds of star birth. Some of this material ends up in dense pockets initially called proto-globular clusters, dozens of which festoon NGC 3597. These pockets will go on to collapse and form fully-fledged globular clusters, large spheres that orbit the centers of galaxies like satellites, packed tightly full of millions of stars.
Text credit: European Space Agency
Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt
The subject of this NASA/ESA Hubble Space Telescope image is known as NGC 3597. It is the product of a collision between two good-sized galaxies, and is slowly evolving to become a giant elliptical galaxy. This type of galaxy has grown more and more common as the universe has evolved, with initially small galaxies merging and progressively building up into larger galactic structures over time.
NGC 3597 is located approximately 150 million light-years away in the constellation of Crater (The Cup). Astronomers study NGC 3597 to learn more about how elliptical galaxies form — many ellipticals began their lives far earlier in the history of the universe. Older ellipticals are nicknamed “red and dead” by astronomers because these bloated galaxies are not anymore producing new, bluer stars, and are thus packed full of old and redder stellar populations.
Before infirmity sets in, some freshly formed elliptical galaxies experience a final flush of youth, as is the case with NGC 3597. Galaxies smashing together pool their available gas and dust, triggering new rounds of star birth. Some of this material ends up in dense pockets initially called proto-globular clusters, dozens of which festoon NGC 3597. These pockets will go on to collapse and form fully-fledged globular clusters, large spheres that orbit the centers of galaxies like satellites, packed tightly full of millions of stars.
Text credit: European Space Agency
Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt
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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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China's Race to Find Aliens First - Great feature article about #SETI, #Astronomy, #Civilisations' behaviors and the #History of #Sciences in #China :
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aquí os presento una noticia, el #METI (una subdivisión del #SETI) envía señales a un planeta (#Planeta_Gj273b y su #estrella_Gj273y) ubicado en la #constelación_de_Canis_Minor desobedeciendo a sus superiores (el SETI, #comunidad_científica y #comunidad_astronómica)
al final recomiendo un libro llamado el mito de las naciones escrito por Patrick J. Geary.
https://youtu.be/7kMbRv6Aduw
al final recomiendo un libro llamado el mito de las naciones escrito por Patrick J. Geary.
https://youtu.be/7kMbRv6Aduw
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Super-Earth 55 Cancri e Could Have Thick, Earth-Like Atmosphere
By sci-news.com
A hot, rocky exoplanet called 55 Cancri e likely has an atmosphere thicker than Earth’s, with ingredients that could be similar to those of Earth’s atmosphere, according to a study by researchers from NASA’s Jet Propulsion Laboratory (JPL), Caltech, and the University of California, Berkeley.
This artist’s impression shows the super-Earth 55 Cancri e orbiting the Sun-like star 55 Cancri A. Image credit: NASA / JPL-Caltech.
#Astronomy #NASA #Hubble #ESA #SETI #ISS #Science #Science64
By sci-news.com
A hot, rocky exoplanet called 55 Cancri e likely has an atmosphere thicker than Earth’s, with ingredients that could be similar to those of Earth’s atmosphere, according to a study by researchers from NASA’s Jet Propulsion Laboratory (JPL), Caltech, and the University of California, Berkeley.
This artist’s impression shows the super-Earth 55 Cancri e orbiting the Sun-like star 55 Cancri A. Image credit: NASA / JPL-Caltech.
#Astronomy #NASA #Hubble #ESA #SETI #ISS #Science #Science64
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