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| Risultati della ricerca nelle immagini - "SST" |
1 - Milky Way - SST-1.jpgThe Milky Way (infrared vision - SST) - 1102 visite"...La Scienza ha sue Regole, ci dicono, e vanno rispettate se si vuol essere scienziati: daccordo. Ma sono le Regole della Scienza o piuttosto le regole di chi decide come fare Scienza?
la realt a stabilire le modalit per la sua conoscenza o non sono piuttosto dogmi imposti da chi si fatto il nido su una cattedra universitaria?..."
Paolo Cortesi
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1 - Milky Way - SST-2.jpgThe Milky Way (infrared vision - SST) - 284 visite"...non esiste, a mio parere, una 'Scienza in s': esiste la Scienza Universale - che non conosciamo e che, forse, non compete a noi conoscere - ed esiste la Scienza Umana - e cio quella fatta dagli uomini, a loro immagine e somiglianza, ed in virt di tale somiglianza essa piena di concetti ed intuizioni giuste, ma pure traboccante di errori ed imprecisioni.
Dire che la Scienza Universale e la Scienza Umana sono la stessa cosa o che condividono la medesima Natura, equivale a dire che Dio e l'Uomo sono la stessa cosa e condividono la medesima Natura.
Ora, dato che su quest'ultimo assunto io ho qualche serio dubbio, mi accontento di pensare che la nostra Scienza sia solo "figliastra" della Scienza Universale e, se cos realmente fosse, me ne rallegrerei, poich un rapporto imperfetto comunque meglio della mancanza di rapporto..."
P.C. Floegers - "In the Paradox"
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2-Milky Way - SST.jpgThe center of the Milky Way: what's behind the dust!105 visite"...Delere licebit quod non edideris; (sed) nescit vox missa reverti..."
(Orazio)
"...Si pu cancellare tutto ci che rimane inespresso; ma una volta che si parlato, nulla di quanto detto potr mai essere restituito al silenzio..."
("...Voce dal sen fuggita - Pi richiamar non vale; - Non si rattien lo strale - Quando dall'arco usc..." - Metastasio)
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A-The Sun from Spitzer - spicules_sst_big.jpgSun "Spicules" from the Sptizer Space Telescope (SST)134 visiteCaption NASA originale: "Pictured above is perhaps the highest resolution image yet of the enigmatic "Solar Flux Tubes" known as "Spicules". Spicules dot the above frame of solar active region, but they are particularly evident as a carpet of dark tubes on the right. Time-sequenced images have recently shown that spicules "Life-span" is of about 5 minutes, starting out as tall tubes of rapidly rising gas but eventually fading as the gas peaks and falls back down to the Sun".
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Aquila Star Cluster - SST.jpgAquila Star Cluster - SST109 visite"...Nell'universo delle probabilit, regna l'improbabile..."
(anonimo)
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Beta_Pictoris~0.jpgBeta Pictoris104 visite
Oben am Himmel steht ein einsamer Stern,
Da wohnt unsere Liebe,
So weit entfernt...
Hab' dich lang nicht mehr gesehen,
Ich denk' auch gar nicht mehr an dich;
Ich kann schon wieder aufrecht gehen,
Das konnt' ich vor paar Wochen nicht...
Hast gesagt du hast 'nen andern
Hab' gesagt ist mir egal,
Du wirst endlos weiter wandern,
Und fr mich war's freier Fall,
Ich kann ohne dich nicht leben...
Hab' ich gedacht das war nicht wahr,
Und oben am Himmel steht ein einsamer Stern:
Da wohnt unsere Liebe, so weit entfernt...
So wurde aus 'ner Sonne nur ein kalter Planet,
Der Lichtjahre weg (der Lichtjahre weg),
Am Nachthimmel steht (am Nachthimmel steht)...
Und schau' ich mal zum Himmel nach dem kleinen Stern,
Dann denke ich an dich ich tu'
Das immer noch gern...
Jeder Blick nach oben, erinnert mich daran;
Dass es Dinge gibt (Dass es Dinge gibt),
Die man nicht halten kann (die man nicht halten kann)...
Ich hab' gedacht ich msste sterben,
Als du sagtest es ist aus;
Um mich herum nur'n Haufen Scherben,
Ich dacht' da komm' ich niemals raus...
Dabei fing mein ganzes Leben
Als du weggingst eigentlich an...
Und oben am Himmel steht ein einsamer Stern,
Da wohnt unsere Liebe, so weit entfernt;
So wurde aus 'ner Sonne nur ein kalter Planet,
Der Lichtjahre weg (der Lichtjahre weg),
Am Nachthimmel steht (am Nachthimmel steht)...
Und schau' ich mal zum Himmel nach dem kleinen Stern,
Dann denke ich an dich ich tu' das immer noch gern;
Jeder Blick nach oben, erinnert mich daran,
Dass es Dinge gibt (dass es Dinge gibt),
Die man nicht halten kann (die man nicht halten kann)...
So denke ich manchmal, still an dich,
Weil ganz vergessen kann, ich dich nicht,
Ein Stern ist ein Stern und kein schwarzes Loch,
Es wird immer so sein, es wird immer zu sein...
Verdammt ich lieb' dich noch!
Und oben am Himmel steht ein einsamer Stern,
Da wohnt unsere Liebe,
So weit entfernt,
So wurde aus 'ner Sonne nur ein kalter Planet,
Der Lichtjahre weg ,
Der Lichtjahre weg)...
Am Nachthimmel steht (am Nachthimmel steht)
Und schau' ich mal zum Himmel nach dem kleinen Stern,
Dann denke ich an dich ich tu' das immer noch gern,
Jeder Blick nach oben, erinnert mich daran
Dass es Dinge gibt (dass es Dinge gibt)
Die man nicht halten kann (die man nicht halten kann)...
By Matthias ReimMareKromium
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BlackWidowNebula-SST-PIA03544.jpgThe "Black Widow" Nebula74 visite"...Lo spettacolo che gli si offriva da lass era incredibilmente bello: una vasta pianura, dall'aspetto ancora evanescente a causa della bruma che il calore del sole stava dissolvendo, apriva la scena.
A seguire, un dolcissimo corpo collinoso che, degradando lentamente, portava a posare lo sguardo su un enorme tavolato azzurro e luccicante pi del Cielo.
Il desiderio di spiccare un salto che lo portasse a poggiare i piedi su quelle terre per un istante tent la sua mente al punto da rivolgere, quasi d'istinto, nuovamente lo sguardo verso quegli uccelli che, veleggiando sopra ed intorno a lui, sembravano invitarlo ad unirsi a loro. Si spogli e si avvicin al ciglio dello strapiombo che si apriva sotto di lui e con lenti movimenti delle braccia cominci ad imitarne il loro volo in una mistica trasfigurazione di gesti e di sensi..."
Giuseppe Spina - "La Scalata"
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Cartwheel_5panel.jpgThe "Cartwheel Galaxy"60 visite"...La frase pi ricorrente I virus non sono n forme di vita n materia inanimata. Non proprio ortodosso definire unentit dicendo ci che non Cosa se ne ricava? Non sono organismi biologici, non si riproducono e non si evolvono autonomamente, ma sono composti di materia, che per dotata di mobilit. In parole povere, i virus sono delle macchine..."
Alessio Feltri
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Cassiopeia_A-PIA11748.jpgSNR Cassiopeia "A"52 visiteFor the first time, a multiwavelength three-dimensional reconstruction of a SuperNova Remnant has been created. This stunning visualization of Cassiopeia A, or Cas A, the result of an explosion approximately 330 years ago, uses data from several telescopes: X-ray data from NASA's Chandra X-ray Observatory, InfraRed data from NASA's Spitzer Space Telescope and optical data from the National Optical Astronomy Observatory 4-meter telescope at Kitt Peak, Ariz., and the Michigan-Dartmouth-MIT 2.4-meter telescope, also at Kitt Peak. In this visualization, the green region is mostly Iron observed in X-rays. The yellow region is a combination of Argon and Silicon seen in X-rays, optical, and infrared including jets of Silicon plus outer debris seen in the optical. The red region is cold debris seen in the infrared. Finally, the blue reveals the outer blast wave, most prominently detected in X-rays.
Most of the material shown in this visualization is debris from the explosion that has been heated by a shock moving inwards. The red material interior to the yellow/orange ring has not yet encountered the inward moving shock and so has not yet been heated. These unshocked debris were known to exist because they absorb background radio light, but they were only recently discovered in infrared emission with Spitzer. The blue region is composed of gas surrounding the explosion that was heated when it was struck by the outgoing blast wave, as clearly seen in Chandra images.
To create this visualization, scientists took advantage of both a previously known phenomenon the Doppler effect and a new technology that bridges astronomy and medicine. When elements created inside a supernova, such as Iron, Silicon and Argon, are heated they emit light at certain wavelengths. Material moving towards the observer will have shorter wavelengths and material moving away will have longer wavelengths. Since the amount of the wavelength shift is related to the speed of motion, one can determine how fast the debris are moving in either direction.
Because Cas A is the result of an explosion, the stellar debris is expanding radially outwards from the explosion center. Using simple geometry, the scientists were able to construct a 3-D model using all of this information. A program called 3-D Slicer modified for astronomical use by the Astronomical Medicine Project at Harvard University in Cambridge, Mass. was used to display and manipulate the 3-D model. Commercial software was then used to create the 3-D fly-through.
The blue filaments defining the blast wave were not mapped using the Doppler Effect because they emit a different kind of light synchrotron radiation that does not emit light at discrete wavelengths, but rather in a broad continuum. The blue filaments are only a representation of the actual filaments observed at the blast wave.
This visualization shows that there are two main components to this supernova remnant: a spherical component in the outer parts of the remnant and a flattened (disk-like) component in the inner region. The spherical component consists of the outer layer of the star that exploded, probably made of helium and carbon. These layers drove a spherical blast wave into the diffuse gas surrounding the star.
The flattened component that astronomers were unable to map into 3-D prior to these Spitzer observations consists of the inner layers of the star. It is made from various heavier elements, not all shown in the visualization, such as Oxygen, Neon, Silicon, Sulphur, Argon and Iron.
High-velocity plumes, or jets, of this material are shooting out from the explosion in the plane of the disk-like component mentioned above. Plumes of Silicon appear in the North/East and South/West, while those of Iron are seen in the South/East and North. These jets were already known and Doppler velocity measurements have been made for these structures, but their orientation and position with respect to the rest of the debris field had never been mapped before now.
This new insight into the structure of Cas A gained from this 3-D visualization is important for astronomers who build models of supernova explosions. Now, they must consider that the outer layers of the star come off spherically, but the inner layers come out more disk-like with high-velocity jets in multiple directions.MareKromium
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Centaurus A-SST-1.jpgCentaurus A - SST (HR)56 visite"...Nusquam tuta Fides..."
(Virgilio)
"...La Fede non al sicuro in nessun luogo..."
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Centaurus A-SST-PIA06007_modest.jpgCentaurus A - SST92 visite"...An elliptical galaxy located 11 million light-years from Earth, Centaurus A is one of the brightest sources of radio waves in the sky. These radio waves indicate the presence of a supermassive black hole, which may be "feeding" off the leftover galactic meal.
A high-speed jet of gas can be seen shooting above the plane of the galaxy (the faint, fuzzy feature pointing from the center toward the upper left)..."
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Centaurus_Region~0.jpgCentaurus Region52 visite"...Aquila muscas non captat..."
(Binder)
"...L'Aquila non cattura le mosche..."MareKromium
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