Most Colourful View
of Universe Captured by Hubble Space Telescope
Astronomers using NASA's Hubble Space Telescope have
assembled a comprehensive picture of the evolving universe – among the most
colourful deep space images ever captured by the 24-year-old telescope.
Researchers say the image, in new study called the
Ultraviolet Coverage of the Hubble Ultra Deep Field, provides the missing link
in star formation. The Hubble Ultra Deep Field 2014 image is a composite of
separate exposures taken in 2003 to 2012 with Hubble's Advanced Camera for
Surveys and Wide Field Camera 3.
_________________________
Φωτογραφία της ατμόσφαιρας της γης
Earth's Atmospheric Layers
International Space Station astronauts captured this photo of Earth's
atmospheric layers on July 31, 2011, revealing the troposphere (orange-red),
stratosphere and above. Satellite instruments allow scientists to better
understand the chemistry and dynamics occurring within and between these layers
_______________________________________________________
Φωτογραφία από τον Άρη
Curiosity Mars Rover Beside Sandstone Target 'Windjana'
This image from the Navigation Camera (Navcam) on NASA's
Curiosity Mars rover shows a sandstone slab on which the rover team has
selected a target, "Windjana," for close-up examination and possible
drilling. The target is on the approximately 2-foot-wide
(60-centimeter-wide) rock seen in the right half of this view.
The Navcam's left-eye camera took this image during the
609th Martian day, or sol, of Curiosity's work on Mars (April 23, 2014). The
rover's name is written on the covering for a portion of the robotic arm, here
seen stowed at the front of the vehicle.
The sandstone target's informal name comes from Windjana
Gorge in Western Australia. If this target meets criteria set by
engineers and scientists, it could become the mission's third drilled rock and
the first that is not mudstone.
The rock is within a waypoint location called "the
Kimberley," where sandstone outcrops with differing resistance to wind
erosion result in a stair-step pattern of layers. Windjana is within what
the team calls the area's "middle unit," because it is intermediate
between rocks that form buttes in the area and lower-lying rocks that show a
pattern of striations.
NASA's Jet Propulsion Laboratory, a division of the
California Institute of Technology, Pasadena, manages the Mars Science
Laboratory Project for NASA's Science Mission Directorate, Washington. JPL
designed and built the project's Curiosity rover and the rover's Navcam.
Image Credit: NASA/JPL-Caltech
_________________________________________________________________________________
Φωτογραφία νεφελώματος
Hubble's Messier 5
"Beautiful Nebula discovered between the Balance
[Libra] & the Serpent [Serpens] ..." begins the description of the 5th
entry in 18th century astronomer Charles Messier's famous catalog of nebulae
and star clusters. Though it appeared to Messier to be fuzzy and round and
without stars, Messier 5 (M5) is now known to be a globular star cluster,
100,000 stars or more, bound by gravity and packed into a region around 165
light-years in diameter. It lies some 25,000 light-years away. Roaming the halo
of our galaxy, globular star clusters are ancient members of the Milky Way. M5
is one of the oldest globulars, its stars estimated to be nearly 13 billion
years old. The beautiful star cluster is a popular target for Earthbound
telescopes. Of course, deployed in low Earth orbit on April 25, 1990, the
Hubble Space Telescope has also captured its own stunning close-up view that
spans about 20 light-years near the central region of M5. Even close to its
dense core at the left, the cluster's aging red and blue giant stars and
rejuvenated blue stragglers stand out in yellow and blue hues in the sharp
color image.
Image Credit: NASA, Hubble Space Telescope, ESA
_________________________
Το νεφέλωμα Sharpless 140
In the quest to better
understand the birth of stars and the formation of new worlds, astronomers have
used NASA's Spitzer Space Telescope to examine the massive stars contained in a
cloudy region called Sharpless 140. This cloud is a star-forming microcosm that
exhibits, within a relatively small area, all of the classic manifestations of
stellar birth.
Sharpless 140 lies almost 3,000 light-years from Earth in the constellation
Cepheus. At its heart is a cluster of three deeply embedded young stars, which
are each several thousand times brighter than the sun. Though they are
strikingly visible in this image from Spitzer's infrared array camera, they are
completely obscured in visible light, buried within the core of the surrounding
dust cloud.
The extreme youth of at least one of these stars is indicated by the presence
of a stream of gas moving at high velocities. Such outflows are signatures of
the processes surrounding a star that is still gobbling up material as part of
its formation.
The bright red bowl, or arc, seen in this image traces the outer surface of the
dense dust cloud encasing the young stars. This arc is made up primarily of
organic compounds called polycyclic aromatic hydrocarbons, which glow on the
surface of the cloud. Ultraviolet light from a nearby bright star outside of
the image is "eating away" at these molecules. Eventually, this light
will destroy the dust envelope and the masked young stars will emerge.
This false-color image was taken on Oct. 11, 2003.
_________________________
Ο Βόρειος πόλος της Σελήνης
NASA Releases First Interactive Mosaic of Lunar North
Pole
Scientists, using cameras aboard NASA's Lunar Reconnaissance Orbiter (LRO),
have created the largest high resolution mosaic of our moon’s north polar
region. The six-and-a-half feet (two-meters)-per-pixel images cover an area
equal to more than one-quarter of the United States.
The images making up the mosaic were taken by the two LRO Narrow Angle
Cameras, which are part of the instrument suite known as the Lunar
Reconnaissance Orbiter Camera (LROC). The cameras can record a tremendous
dynamic range of lit and shadowed areas.
Web viewers can zoom in and out, and pan around an area. Constructed from
10,581 pictures, the mosaic provides enough detail to see textures and subtle
shading of the lunar terrain. Consistent lighting throughout the images makes it
easy to compare different regions.
_________________________
Κοσμικός... πίνακας
Υπέρoxη
εικόνα της «κόκκινης κηλίδας» του Δία
ΔΗΜΟΣΙΕΥΣΗ: 11:10
Most Colourful View
of Universe Captured by Hubble Space Telescope
Astronomers using NASA's Hubble Space Telescope have
assembled a comprehensive picture of the evolving universe – among the most
colourful deep space images ever captured by the 24-year-old telescope.
Researchers say the image, in new study called the
Ultraviolet Coverage of the Hubble Ultra Deep Field, provides the missing link
in star formation. The Hubble Ultra Deep Field 2014 image is a composite of
separate exposures taken in 2003 to 2012 with Hubble's Advanced Camera for
Surveys and Wide Field Camera 3.
_________________________
Φωτογραφία της ατμόσφαιρας της γης
Earth's Atmospheric Layers
International Space Station astronauts captured this photo of Earth's atmospheric layers on July 31, 2011, revealing the troposphere (orange-red), stratosphere and above. Satellite instruments allow scientists to better understand the chemistry and dynamics occurring within and between these layers_______________________________________________________
Φωτογραφία από τον Άρη
Curiosity Mars Rover Beside Sandstone Target 'Windjana'
This image from the Navigation Camera (Navcam) on NASA's
Curiosity Mars rover shows a sandstone slab on which the rover team has
selected a target, "Windjana," for close-up examination and possible
drilling. The target is on the approximately 2-foot-wide
(60-centimeter-wide) rock seen in the right half of this view.
The Navcam's left-eye camera took this image during the
609th Martian day, or sol, of Curiosity's work on Mars (April 23, 2014). The
rover's name is written on the covering for a portion of the robotic arm, here
seen stowed at the front of the vehicle.
The sandstone target's informal name comes from Windjana
Gorge in Western Australia. If this target meets criteria set by
engineers and scientists, it could become the mission's third drilled rock and
the first that is not mudstone.
The rock is within a waypoint location called "the
Kimberley," where sandstone outcrops with differing resistance to wind
erosion result in a stair-step pattern of layers. Windjana is within what
the team calls the area's "middle unit," because it is intermediate
between rocks that form buttes in the area and lower-lying rocks that show a
pattern of striations.
NASA's Jet Propulsion Laboratory, a division of the
California Institute of Technology, Pasadena, manages the Mars Science
Laboratory Project for NASA's Science Mission Directorate, Washington. JPL
designed and built the project's Curiosity rover and the rover's Navcam.
Image Credit: NASA/JPL-Caltech
_________________________________________________________________________________
Φωτογραφία νεφελώματος
Hubble's Messier 5
"Beautiful Nebula discovered between the Balance
[Libra] & the Serpent [Serpens] ..." begins the description of the 5th
entry in 18th century astronomer Charles Messier's famous catalog of nebulae
and star clusters. Though it appeared to Messier to be fuzzy and round and
without stars, Messier 5 (M5) is now known to be a globular star cluster,
100,000 stars or more, bound by gravity and packed into a region around 165
light-years in diameter. It lies some 25,000 light-years away. Roaming the halo
of our galaxy, globular star clusters are ancient members of the Milky Way. M5
is one of the oldest globulars, its stars estimated to be nearly 13 billion
years old. The beautiful star cluster is a popular target for Earthbound
telescopes. Of course, deployed in low Earth orbit on April 25, 1990, the
Hubble Space Telescope has also captured its own stunning close-up view that
spans about 20 light-years near the central region of M5. Even close to its
dense core at the left, the cluster's aging red and blue giant stars and
rejuvenated blue stragglers stand out in yellow and blue hues in the sharp
color image.
Image Credit: NASA, Hubble Space Telescope, ESA
_________________________
Το νεφέλωμα Sharpless 140
In the quest to better
understand the birth of stars and the formation of new worlds, astronomers have
used NASA's Spitzer Space Telescope to examine the massive stars contained in a
cloudy region called Sharpless 140. This cloud is a star-forming microcosm that
exhibits, within a relatively small area, all of the classic manifestations of
stellar birth.
Sharpless 140 lies almost 3,000 light-years from Earth in the constellation Cepheus. At its heart is a cluster of three deeply embedded young stars, which are each several thousand times brighter than the sun. Though they are strikingly visible in this image from Spitzer's infrared array camera, they are completely obscured in visible light, buried within the core of the surrounding dust cloud.
The extreme youth of at least one of these stars is indicated by the presence of a stream of gas moving at high velocities. Such outflows are signatures of the processes surrounding a star that is still gobbling up material as part of its formation.
The bright red bowl, or arc, seen in this image traces the outer surface of the dense dust cloud encasing the young stars. This arc is made up primarily of organic compounds called polycyclic aromatic hydrocarbons, which glow on the surface of the cloud. Ultraviolet light from a nearby bright star outside of the image is "eating away" at these molecules. Eventually, this light will destroy the dust envelope and the masked young stars will emerge.
This false-color image was taken on Oct. 11, 2003.
Sharpless 140 lies almost 3,000 light-years from Earth in the constellation Cepheus. At its heart is a cluster of three deeply embedded young stars, which are each several thousand times brighter than the sun. Though they are strikingly visible in this image from Spitzer's infrared array camera, they are completely obscured in visible light, buried within the core of the surrounding dust cloud.
The extreme youth of at least one of these stars is indicated by the presence of a stream of gas moving at high velocities. Such outflows are signatures of the processes surrounding a star that is still gobbling up material as part of its formation.
The bright red bowl, or arc, seen in this image traces the outer surface of the dense dust cloud encasing the young stars. This arc is made up primarily of organic compounds called polycyclic aromatic hydrocarbons, which glow on the surface of the cloud. Ultraviolet light from a nearby bright star outside of the image is "eating away" at these molecules. Eventually, this light will destroy the dust envelope and the masked young stars will emerge.
This false-color image was taken on Oct. 11, 2003.
_________________________
Ο Βόρειος πόλος της Σελήνης
NASA Releases First Interactive Mosaic of Lunar North
Pole
Scientists, using cameras aboard NASA's Lunar Reconnaissance Orbiter (LRO),
have created the largest high resolution mosaic of our moon’s north polar
region. The six-and-a-half feet (two-meters)-per-pixel images cover an area
equal to more than one-quarter of the United States.
The images making up the mosaic were taken by the two LRO Narrow Angle
Cameras, which are part of the instrument suite known as the Lunar
Reconnaissance Orbiter Camera (LROC). The cameras can record a tremendous
dynamic range of lit and shadowed areas.
Web viewers can zoom in and out, and pan around an area. Constructed from
10,581 pictures, the mosaic provides enough detail to see textures and subtle
shading of the lunar terrain. Consistent lighting throughout the images makes it
easy to compare different regions.
_________________________
Κοσμικός... πίνακας
Πραγματικά η
εικόνα μοιάζει με ένα πίνακα ζωγραφικής. Credit: (NASA/JPL)
Χιούστον
Μια πραγματικά υπέροχη εικόνα της «κόκκινης κηλίδας» του
Δία έδωσε στη δημοσιότητα η NASA. Η εικόνα αποτελεί
σύνθεση φωτογραφιών που είχε τραβήξει το σκάφος Voyager 1 το
1979 από τον γίγαντα αερίου του ηλιακού μας συστήματος.
H κηλίδα
Η «κόκκινη κηλίδα» του Δία είναι μια μόνιμη καταιγίδα, ένας αντικυκλώνας, που
βρίσκεται 22 μοίρες νότια του ισημερινού του γίγαντα του ηλιακού μας
συστήματος. Η κόκκινη κηλίδα είναι τόσο μεγάλη ώστε θα μπορούσαν να «χωρέσουν»
μέσα σε αυτή 2-3 πλανήτες σαν τη Γη.
Οι ειδικοί εκτιμούν ότι αυτή η γιγάντια σε εύρος και ένταση καταιγίδα ξεκίνησε
πριν από περίπου 300 χρόνια. Υπάρχουν πολλά αναπάντητα ερωτηματικά για αυτό το
εντυπωσιακό φαινόμενο για αυτό και αποτελεί μόνιμο στόχο των επιστημόνων.
_______________________________________________
Μια πραγματικά υπέροχη εικόνα της «κόκκινης κηλίδας» του
Δία έδωσε στη δημοσιότητα η NASA. Η εικόνα αποτελεί
σύνθεση φωτογραφιών που είχε τραβήξει το σκάφος Voyager 1 το
1979 από τον γίγαντα αερίου του ηλιακού μας συστήματος. H κηλίδα
Η «κόκκινη κηλίδα» του Δία είναι μια μόνιμη καταιγίδα, ένας αντικυκλώνας, που βρίσκεται 22 μοίρες νότια του ισημερινού του γίγαντα του ηλιακού μας συστήματος. Η κόκκινη κηλίδα είναι τόσο μεγάλη ώστε θα μπορούσαν να «χωρέσουν» μέσα σε αυτή 2-3 πλανήτες σαν τη Γη.
Οι ειδικοί εκτιμούν ότι αυτή η γιγάντια σε εύρος και ένταση καταιγίδα ξεκίνησε πριν από περίπου 300 χρόνια. Υπάρχουν πολλά αναπάντητα ερωτηματικά για αυτό το εντυπωσιακό φαινόμενο για αυτό και αποτελεί μόνιμο στόχο των επιστημόνων.
Solar
flares are powerful bursts of radiation, appearing as giant flashes of light in
the SDO images. Harmful radiation from a flare cannot pass through Earth's
atmosphere to physically affect humans on the ground, however -- when intense
enough -- they can disturb the atmosphere in the layer where GPS and
communications signals travel.
__________________________________________________________________________
Image Credit & Copyright: César Blanco González
____________________________
Η
λιμνοθάλασσα των άστρων
Εντυπωσιακό κοσμικό μαιευτήριο σε απόσταση 5 χιλιάδων ετών φωτός
ΔΗΜΟΣΙΕΥΣΗ:
13:57
Η νέα εντυπωσιακή εικόνα της λιμνοθάλασσας των άστρων. Credit: (ESO+VPHAS+team)
Παρανάλ,
Χιλή
Μια νέα εντυπωσιακή εικόνα από το Νεφέλωμα Λιμνοθάλασσας κατέγραψε το
τηλεσκόπιο VLT στη Χιλή. Το νεφέλωμα με κωδική ονομασία Μ8 και NGC 6523
βρίσκεται σε απόσταση πέντε χιλιάδων ετών φωτός από εμάς στον αστερισμό του
Τοξότη. Το νεφέλωμα έχει διάμετρο 100 ετών φωτός και σε αυτό υπάρχουν
κολοσσιαίες ποσότητες κοσμικής σκόνης δημιουργώντας έτσι ένα γιγάντιο
εργοστάσιο παραγωγής νέων και μεγάλης λαμπρότητας άστρων.
_________________________
Το Μεγα(λοπρεπές) Νεφέλωμα
Εκπλητική
φωτογραφία του πιο κοντινού εργοστάσιου παραγωγής άστρων
ΔΗΜΟΣΙΕΥΣΗ: 16/01/2014 10:43
Μοιάζει με πίνακα
ζωγραφικής αλλά είναι το εντυπωσιακό Μέγα Νεφέλωμα του Ωρίωνα. Credit:
NASA/JPL-Caltech
Πασαντίνα
Η NASA έδωσε στη δημοσιότητα μια νέα εντυπωσιακή
ομολογουμένως εικόνα από το Μέγα Νεφέλωμα του Ωρίωνα. Ο αστερισμός του Ωρίωνα
διαθέτει πολλά νεφελώματα αλλά το Μέγα Νεφέλωμα, που είναι επίσης γνωστό ως M42, είναι το πιο «δραστήριο» και
ενδιαφέρον για τους επιστήμονες. Βρίσκεται σε απόσταση περίπου 1350 ετών φωτός
από τη Γη και η διάμετρός του εκτιμάται ότι είναι 24 έτη φωτός. Η μελέτη του
έχει αποκαλύψει πολλά μυστικά για τη διαδικασία σχηματισμού άστρων και πλανητών
καθώς και για διάφορα κοσμικά φαινόμενα. Η νέα φωτογραφία που δείχνει το
νεφέλωμα σε όλη του την μεγαλοπρέπεια αποτελεί προϊόν επεξεργασίας από εικόνες
που τράβηξε πρόσφατα το διαστημικό τηλεσκόπιο Spitzer.
Οι τελευταίες φωτογραφίες από τη NASA
Φωτογραφία του αστεροειδή ΒΕΣΤΑ
_____________________________________________________
Φωτογραφίες από το διαστημικό τηλεσκόπιο CHANDRA
------------------------------------------------------------------------------
Νέες φωτογραφίες από τη ΝΑΣΑ
_______________________________
The Butterfly Nebula
The bright clusters and nebulae of planet Earth's night sky are often named for flowers or insects. Though its wingspan covers over 3 light-years, NGC 6302 is no exception. With an estimated surface temperature of about 250,000 degrees C, the dying central star of this particular planetary nebula has become exceptionally hot, shining brightly in ultraviolet light.
The Moon and Sun
Two or three times a year, NASA's Solar Dynamics Observatory observes the moon traveling across the sun, blocking its view.
Big Brother to the Milky Way
This image from NASA's Galaxy Evolution Explorer shows NGC 6744, one of the galaxies most similar to our Milky Way in the local universe.
Colliding Galaxy Pair
This striking NASA Hubble Space Telescope image, which shows what looks like the profile of a celestial bird, belies the fact that close encounters between galaxies are a messy business. This interacting galaxy duo is collectively called Arp 142. The pair contains the disturbed, star-forming spiral galaxy NGC 2936, along with its elliptical companion, NGC 2937 at lower left.
Cosmic Collision Between Galaxies
This image from the NASA/ESA Hubble Space Telescope captures an ongoing cosmic collision between two galaxies — a spiral galaxy is in the process of colliding with a lenticular galaxy._______________
Τρεις φωτογραφίες από τη ΝΑΣΑ που ξεχωρίζουν
Μαύρη τρύπα εκτοξεύει δέσμες κυμάτων μεγάλης ισχύος στο γαλαξία
Αυτή η σύνθετη εικόνα ενός ξαλαξία δείχνει πως η τρομερή βαρύτητα μιας μαύρης τρύπας μπορεί να δημιουργήσει φαινόμενα με τεράστια ισχύ. Η μαύρη τρύπα έχει μάζα 100 εκατομμύρια φορές μεγαλύτερη από τη μάζα του δικού μας ήλιου. Οι δύο δέσμες αποτελούνται από σωματίδια που κινούνται με μεγάλη ραχύτητα και έχουν απεικονιστεί This composite image of a galaxy illustrates how the intense gravity of a supermassive black hole can ραδιοκύματα. Η κεντρική καφέ σφαίρα αποτελείται από υπερθερμα αέρια και έχει απεικονιστεί με ακτίνες Χ.
Το διαστημικό τηλεσκόπιο ΧάμπολHubble "βλέπει" τη γαλαξιακή κεφαλή αλόγου με διαφορετικό χρώμα
Αστρονόμοι , χρησιμοποιόντας το τηλεσκόποιο Χάμπολ φωτογράφισαν το σχηματισμό γαλαξιακών αερίων που έχει σχήμα κεφαλής αλόγου με υπερυθρο φώς.
Το τριαντάφυλο
Η περιστρεφόμενη επιφάνεια της καταιγίδας στο βόρειο πόλο του Κρόνου μοιάζει πολύ με ένα κόκκινο τριαντάφυλο.Φωτογραφήθηκε από το διαστημόπλοιο Κασσίνι. Έχει διάμετρο 2000 χιλιομέτρων (!!!) και πνέουν άνεμοι με ταχύτητα 540 χιλιόμετρα την ώρα (!!).
_______________________________________________________________________________
Φωτογραφίες από ηλιακές εκκρήξεις
Φωτογραφίες από το μη επανδρωμένο διαστημόπλοιο Κασσίνι
Meteors Meet Saturn's Rings
Five images of Saturn's rings, taken by NASA's Cassini spacecraft between 2009 and 2012, show clouds of material ejected from impacts of small objects into the rings. Clockwise from top left are two views of one cloud in the A ring, taken 24.5 hours apart, a cloud in the C ring, one in the B ring, and another in the C ring. Arrows in the annotated version point to the cloud structures, which spread out at visibly different angles than the surrounding ring features.The clouds of ejected material were visible because of the angle sunlight was hitting the Saturn system and the position of the spacecraft. The first four images were taken near the time of Saturn equinox, when sunlight strikes the rings at very shallow angles, nearly directly edge-on. During Saturn equinox, which occurs only every 14.5 Earth years, the ejecta clouds were caught in sunlight because they were elevated out of the ring plane. The last image was taken in 2012 at a very high-phase angle, which is the sun-Saturn-spacecraft angle. This geometry enabled Cassini to see the clouds of dust-sized particles in the same way that dust on a surface is easier to see when the viewer is looking toward a light source.
The angle that the clouds are canted gives the time elapsed since the cloud was formed (see PIA14941). The A ring cloud formed 24 hours before its first apparition in the top left box; it formed 48.5 hours before the top middle image. The other three clouds were approximately 13 hours, four hours, and one hour old (respectively) at the times they were seen. See PIA11674 for more information on ring impacts.
The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.
_____________________________________________________________________
Φωτογραφίες του Ήλιου
____________________________________________________________________
Νέες φωτογραφίες από τη ΝΑΣΑ
________________________________________________________________________
Εκρήξεις σουπερνόβα
______________________________________________________________________
Η πρώτη γυναίκα επικεφαλής του διεθνούς διαστημικού σταθμού.
Peggy Whitson
Άλλοι αστροναύτες του σταθμού
__________________________________________________________________
Φωτοιγραφίες από τον πλανήτη Άρη που έστειλε στη γη το διαστημικό όχημα curiosity
Κάλυψε απόσταση περίπου 800 μέτρων πάνω στην επιφάνεια του Άρη
__________________________________________________________________
Νέες φωτογραφίες από το τηλεσκόπιο Χαμπλ (Hubble)
Καταπληκτικές φωτογραφίες από το τηλεσκόπιο Χαμπλ (Hubble)
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