| |
| Ultimi arrivi - Saturn: the "Ringed Beauty" and His Moons |
Saturn-N00080469-00.jpgShooting Star or Alien Spaceship in-transit? (1)140 visiteQuesta coppia di frame la riteniamo semplicemente straordinaria poichè essa potrebbe essere una nuova prova tangibile del verificarsi di un evento di grande significato e valore.
La nostra sensibilità ed esperienza ci dicono che la striscia che appare in entrambi i frames (i quali, per giunta, sono consecutivi) è l'evidenza di un fenomeno unitario e NON è un image-artifact.
E' la "tessitura" dello streak a dirci che non si tratta di un image artifact, bensì di un corpo il quale emana luce propria e che si sta muovendo davanti ad una delle fotocamere di Cassini. Dopo aver effettuato un rapido calcolo, ci sentiamo pure di dire che, con ogni probabilità, l'oggetto ripreso è una meteora che sta precipitando verso le profondità dell'atmosfera di Saturno (e questa sarebbe la seconda individuata da Lunexit).
Note: il frame N00080469 è stato ottenuto da una distanza di 793.230 Km da Saturno; il frame N00080470, invece, è stato ottenuto da una distanza di 791.553 Km.
Considerato lo scarto di 1677 Km tra il primo ed il secondo frame e supponendo che Cassini si stia muovendo radialmente rispetto a Saturno e ad una velocità di circa 9 Km al secondo (fonte NASA), possiamo agevolmente calcolare che le due immagini sono state ottenute a distanza di 3 minuti e 10 secondi (circa) l'una dall'altra.
Ora, se la velocità di ingresso di una meteora nell'atmosfera di un Pianeta (qualsiasi Pianeta), è difficilmente inferiore (diciamo mediamente pari) ai 30.000 Km orari, ne deriva che il nostro "corpo celeste non identificato" dovrebbe aver percorso, in 1 minuto di "corsa", circa 500 Km (il che pure significa una "corsa" di circa 1600 Km in poco più di 3 minuti).
Tenuto conto della distanza Cassini/corpo celeste non identificato e dell'ampiezza del campo visivo della Sonda, a nostro parere, i conti (almeno da un punto di vista teorico) ci sembra che tornino.
Pertanto, nel silenzio della NASA (come degli altri Scienziati, Ricercatori ed Appassionati che si occupano di questa Materia), noi battezziamo questo "bolide" come il nome di LNXT2-08-04-2007.
Se avete commenti o annotazioni da fare in ordine a questa (possibile) scoperta, Vi invitiamo a contattarci.Apr 08, 2007
|
|
Saturn-N00080470-01.jpgShooting Star or Alien Spaceship in-transit? (2)113 visiteCaption NASA frame (1): "N00080469.jpg was taken on April 07, 2007 and received on Earth April 07, 2007. The camera was pointing toward SATURN-RINGS at approximately 793,230 kilometers away, and the image was taken using the CL1 and GRN filters. This image has not been validated or calibrated".
Caption NASA frame (2): "N00080470.jpg was taken on April 07, 2007 and received on Earth April 07, 2007. The camera was pointing toward SATURN-RINGS at approximately 791,533 kilometers away, and the image was taken using the BL1 and CL2 filters. This image has not been validated or calibrated". Apr 08, 2007
|
|
Saturn-PIA08911.jpgSaturn: the Ringed Beauty57 visiteCaption NASA:"(...) This infrared view from high above Saturn's Ring-Plane highlights the contrast in the cloud bands, the dimly glowing rings and their shadows on the Gas Giant Planet. The overall effect is stirring.
This view looks toward the unlit side of the Rings from about 48° above the Ring-Plane.
The image was taken with the Cassini spacecraft wide-angle camera using a combination of spectral filters sensitive to wavelengths of polarized infrared light.
The view was obtained on Feb. 12, 2007 at a distance of approx. 1,7 MKM (about 1 MMs) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 144°.
Image scale is roughly 191 Km (about 119 miles) per pixel".Apr 06, 2007
|
|
Prometheus-PIA08910.jpgRestless Prometheus...66 visiteCaption NASA:"Prometheus draws a fresh streamer of material from the F-Ring as it passes the Ring's interior edge. The streamer will continuously shear out as it orbits the planet, becoming more elongated and increasingly aligned with the F-Ring with time.
A single large crater is the principle feature visible on Prometheus (102 Km, or about 63 miles across) in this view. The moon is lit partly by bright Sunlight and partly by reflected light from Saturn.
This view looks toward the unlit side of the rings from about 57° above the Ring-Plane.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 11, 2007 at a distance of approx. 1,7 MKM (about 1,1 MMs) from Prometheus and at a Sun-Prometheus-spacecraft, or phase, angle of 130°.
Image scale is roughly 10 Km (about 6 miles) per pixel".Apr 06, 2007
|
|
The_Rings-PIA08908.jpgA huge clump in the F-Ring56 visiteCaption NASA:"The F-Ring dissolves into a fuzzy stream of particles -- rather different from its usual appearance of a narrow, bright core flanked by dimmer ringlets.
Also notable here is the bright clump of material that flanks the Ring's core.
This view looks toward the unlit side of the rings from about 58° above the Ring-Plane.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 10, 2007 at a distance of approx. 1,7 MKM (such about 1,1 MMs) from Saturn. Image scale is roughly 10 Km (about 6 miles) per pixel".Apr 02, 2007
|
|
Hyperion-N00040272~0.jpgThe "True Colors" of Hyperion, according to Lunexit57 visitenessun commentoMar 30, 2007
|
|
Atlas-PIA08906.jpgAtlas and the F-Ring56 visiteCaption NASA:"The Cassini spacecraft gazes toward the multiple strands of the ever-changing F-Ring, also sighting Atlas at its station just beyond the A-Ring edge.
A few faint background stars are visible in the image. Atlas, which appears left of center, is 32 kilometers (20 miles across).
This view looks toward the unlit side of the Rings from about 58 degrees above the ringplane.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 10, 2007 at a distance of approx. 1,7 MKM (such as about 1,1 MMs) from Atlas and at a Sun-Atlas-spacecraft, or phase, angle of 128°. Image scale is roughly 10 Km (such as about 6 miles) per pixel".MareKromiumMar 30, 2007
|
|
Saturn-PIA08366.jpgSaturn and Rhea59 visiteCaption NASA:"A serene orb of ice is set against the gentle pastel clouds of giant Saturn. Rhea transits the face of the gas giant, whose darkened Rings and their planet-hugging shadows appear near upper right.
Rhea is the second largest of Saturn's moons.
This view looks toward the unilluminated side of the Rings from about 3° above the Ring-Plane.
Images taken using red, green and blue spectral filters were combined to create this natural color view. The view was acquired with the wide-angle camera on Feb. 4, 2007. Cassini acquired the view at a distance of approx. 1,2 MKM (about 700.000 miles) from Saturn and approx. 679.000 Km (about 422.000 miles) from Rhea.
Image scale is roughly 68 Km (about 42 miles) per pixel on Saturn and about 40 Km (about 25 miles) per pixel on Rhea". Mar 28, 2007
|
|
Saturn-PIA08367.jpgSouthern Saturn58 visiteCaption NASA:"Cassini takes in a sweeping view of Saturn's South Polar Region as the planet's shadow masks the Rings and bright, icy Mimas looks on from left.
This view looks toward the lit side of the Rings from about 28° below the Ring-Plane.
Images taken using red, green and blue spectral filters were combined to create this color view. The view was acquired with the wide-angle camera on Feb. 20, 2007, at a distance of approximately 1 MKM (about 600.000 miles) from Saturn.
Image scale is roughly 58 Km (about 36 miles) per pixel".Mar 28, 2007
|
|
Saturn-PIA09185.jpgThe Saturnian "Hexagon" and Aurora59 visiteThis nighttime view of Saturn's north pole by the visual and infrared mapping spectrometer on NASA's Cassini orbiter reveals a dynamic, active planet at least 75 kilometers (47 miles) below the normal cloud tops seen in visible light. Clearly revealed is the bizarre six-sided hexagon feature present at the north pole.
This image is one of the first clear images of the north polar region ever acquired from a unique polar perspective. In this image, the blue color shows high-altitude emissions from atmospheric molecules excited by charged particles smashing into the atmosphere along Saturn's powerful magnetic field lines, producing the aurora at very high altitudes in Saturn's atmosphere. The red color indicates the amount of 5-micron wavelength radiation, or heat, generated in the depths of the warm interior of Saturn that escapes the planet. Clouds blocking this light are revealed as silhouettes against the background thermal glow of the planet.
This image is among the first to capture the entire hexagonal feature and north polar region in one shot. It is also one of the first polar views using Saturn's thermal glow at 5 microns (seven times the wavelength visible to the human eye) as the light source. This allows polar cloud features to be revealed during the persistent nighttime conditions under way during north polar winter.
The hexagonal feature was originally discovered by NASA's Voyager spacecraft in 1980, but those images and subsequent ground-based telescope images suffered from poor viewing perspectives, which placed the feature and the north pole at the extreme northern limb (edge) in those images.
The strong brightness of the hexagon feature indicates that it is primarily a clearing in the clouds, which extends deep into the atmosphere, at least down to the 3-bar (3-Earth atmospheres pressure) level, about 75 kilometers (47 miles) below the clouds and hazes seen in visible wavelengths. Thick clouds border both sides of the narrow feature, as indicated by the adjacent dark lanes paralleling the bright hexagon. This image and other images acquired over a 12-day period between Oct. 30 and Nov. 11, 2006, show that the feature is nearly stationary, and likely is an unusually strong pole-encircling planetary wave that extends deep into the atmosphere.
This image was acquired by the Cassini visual and infrared mapping spectrometer on Oct. 29, 2006, from an average distance of 905,000 kilometers (562,340 miles) above the clouds.
Mar 28, 2007
|
|
Saturn-PIA09186.jpgNight view of the "Hexagon"60 visiteThis nighttime view of Saturn's north pole by the visual and infrared mapping spectrometer onboard NASA's Cassini orbiter clearly shows a bizarre six-sided hexagon feature encircling the entire north pole. This is one of the first clear images taken of the north polar region ever acquired from a unique polar perspective.
In this image, the red color indicates the amount of 5-micron wavelength radiation, or heat, generated in the warm interior of Saturn that escapes the planet. Clouds near 3-bar (about 100 kilometers or 62 miles deeper than seen in visible wavelengths) block the light, revealing them in silhouette against the background thermal glow of Saturn. The bluish color shows sunlight striking the far limb (edge) of the planet, showing that the entire north pole is under the nighttime conditions characteristic of polar winter, as on Earth.
This image is the first to capture the entire feature and north polar region in one shot, and is also the first polar view using Saturn's thermal glow at 5 microns (seven times the wavelength visible to the human eye) as the light source. This allows the pole to be revealed during the persistent nighttime conditions under way during winter. The hexagon feature was originally discovered by NASA's Voyager spacecraft in 1980, but those historic images and subsequent ground-based telescope images suffered from poor viewing perspectives, which placed the feature and the north pole at the extreme northern limb (edge) in those images.
In the new infrared images, the strong brightness of the hexagon feature indicates that it is primarily a clearing in the clouds, which extends deep into the atmosphere, at least some 75 kilometers (47 miles) underneath the typical upper hazes and clouds seen in the daytime imagery by Voyager. Thick clouds border both sides of the narrow feature, as indicated by the adjacent dark lanes paralleling the bright hexagon. This and other images acquired over a 12-day period between Oct. 30 and Nov. 11, 2006, show that the feature is nearly stationary, and likely is an unusually strong pole-encircling planetary wave that extends deep into the atmosphere.
This image was acquired with the Cassini visual and infrared mapping spectrometer on Oct. 30, 2006, from an average distance of 1.3 million kilometers (807,782 miles).
Nota Lunexit: ed ora, quanto ci scommettiamo che, entro (al massimo) 48 ore, il Prof. Hoagland e la Sua Scuola (e, probabilmente, tanti altri Guru della Scienza di Confine) inizieranno a parlare - con estrema saccenza - di "artificialità" dell'Esagono e (perchè no?) della probabile natura artificiale di tutto il Gigante Anellato?
Stay tuned!Mar 28, 2007
|
|
Saturn-PIA09187.gifWatch the "Hexagon" rotate! (GIF-Movie)58 visiteThis nighttime movie of the depths of the North Pole of Saturn taken by the VIMS onboard NASA's Cassini Orbiter reveals a dynamic, active planet lurking underneath the ubiquitous cover of upper-level hazes. The defining feature of Saturn's North Polar Regions -- the six-sided hexagon feature -- is clearly visible in the image.
Here, brightness indicates the amount of 5-micron (seven times the wavelength visible to the human eye) radiation, or heat, generated in the depths of the warm interior of Saturn that escapes the planet. Clouds at a depth equivalent to 3-Earth-atmospheres pressure block the light radiating from below, revealing themselves in dark silhouette against the background thermal glow of the Planet. These deep clouds lie some 75 Km (about 47 miles) underneath the typical ammonia hazes and clouds seen in visual imagery and are likely composed of ammonia-hydrosulfide, although some may be composed of water, as on Earth.
A prominent feature seen in this polar view is a strange hexagon wave feature circumscribing the north pole.
This nighttime movie was acquired over a one-hour period on Nov. 10, 2006, from an average distance of 1.03 million kilometers (621,000 miles) above Saturn's clouds.
Mar 28, 2007
|
|
| 2245 immagini su 188 pagina(e) |
|
|
|
|
|
84 | |
|
|
|
|
|
|
