| Risultati della ricerca nelle immagini - "20" |
A Streak in the Saturn_s Space (1).jpgA "Streak" in the Sky of Saturn (1) - N00008770494 visiteEcco la prima delle due straordinarie immagini catturate dalla Sonda Cassini/Huygens mentre era impegnata a riprendere scorci dello Spazio di Saturno il giorno 4 Agosto 2004, ad una distanza di poco più di 8 milioni di km dal Pianeta Anellato. Un oggetto luminoso (molto luminoso!) in movimento passa davanti all'obbiettivo della Sonda: gli altri corpi celesti che si vedono sullo sfondo dell'immagine (stelle) sono tutti puntiformi. Proprio a giudicare dal quantitativo di stelle visibili sullo sfondo...
|
|
A Streak in the Saturn_s Space (2)~0.jpgA "Streak" in the Sky of Saturn (2) - N00008771407 visite...(poche) riteniamo che immagini come queste due abbiano richiesto un'esposizione decisamente breve. In ogni caso, preso atto della circostanza per cui è rimasta impressa una striscia di luce mentre le stelle sullo sfondo sono rimaste puntiformi, possiamo ragionevolmente ritenere che l'oggetto luminoso inquadrato ERA IN MOVIMENTO rispetto allo sfondo stellato il quale invece è - per definizione! - FISSO.
Questa striscia è peraltro identica a quella lasciata da un altro corpo luminoso in movimento...
|
|
AB-Another Streak in the Sky.jpgThe 2nd "Streak" in the Sky of Saturn - W00000828185 visiteMa ecco che, improvvisamente, accade qualcosa. La traccia luminosa che vediamo questa volta è assai meno brillante di quella del 4 Agosto, ma l'Anomalia è comunque del tutto evidente. Cosa è successo? E' successo che, ancora una volta, un oggetto luminoso in movimento lungo una traiettoria lineare è passato davanti ad uno degli "occhi elettronici" di Cassini/Huygens, facendosi "immortalare". Noi abbiamo battezzato questa seconda Anomalia con il nome di "Saturn PF2-08-2004". A quando la Terza?!?...
|
|
Asteroids-Asteroid_2002JF56-PIA09230-01.jpgFormer "Unknown Asteroid" is now "Asteroid 2002 JF56"57 visiteThe two "spots" in this image are a composite of two images of asteroid 2002 JF56 taken on June 11 and June 12, 2006, with the Multispectral Visible Imaging Camera (MVIC) component of the New Horizons Ralph imager. In the bottom image, taken when the asteroid was about 3,36 MKM (approx. 2,1 MMs) away from the Spacecraft, 2002 JF56 appears like a dim star. At top, taken at a distance of about 1,34 MKM (such as about 833.000 miles), the object is more than a factor of six brighter.
The best current, estimated diameter of the asteroid is approx. 2,5 Km.
The asteroid observation was a chance for the New Horizons team to test the spacecraft's ability to track a rapidly moving object. On June 13 New Horizons came to within about 102.000 Km of the small asteroid, when the Spacecraft was nearly 368 MKM (about 228 MMs) from the Sun and about 273 MKM (approx 170 MMs) from Earth.MareKromium
|
|
Asteroids-Asteroid_2007-TU24.jpgAsteroid 2007 TU24 (Radar View)55 visiteAsteroid 2007 TU24 passed by the Earth yesterday, posing no danger. The space rock, estimated to be about 250 mt across, coasted by just outside the orbit of Earth's Moon. The passing was not very unusual - small rocks strike Earth daily, and in 2003 a rock the size of a bus passed inside the orbit of the Moon, being detected only after passing. TU24 was notable partly because it was so large. Were TU24 to have struck land, it might have caused a magnitude 7 earthquake and left a city-sized crater. A perhaps larger danger would have occurred were TU24 to have struck the ocean and raised a large tsunami.
This radar image was taken 2 days ago. The Arecibo Radio Telescope in Puerto Rico broadcast radar that was reflected by the asteroid and then recorded by the Byrd Radio Telescope in Green Bank, West Virginia. The resulting image shows TU24 to have an oblong and irregular shape. TU24 was discovered only three months ago, indicating that other potentially hazardous asteroids might lurk in our Solar System currently undetected. Objects like TU24 are hard to detect because they are so faint and move so fast. Humanity's ability to scan the sky to detect, catalog, and analyze such objects has increased notably in recent years.
MareKromium
|
|
KeelerMoon-PIA07584.jpgS/2005 S1: the "Keeler-Gap" Moon53 visiteCassini's cameras were retargeted to capture the tiny Keeler Gap Moon S/2005 S1, visible at the center and first discovered by Cassini a few months ago. Waves raised in the gap edges by the Keeler moonlet's gravity are clearly visible here. Scientists can use the height of the waves to determine the little moon's mass.
The Keeler moon is 7 Km (about 4,3 miles) across and orbits within its 42-km (about 26-mile) wide gap. The much larger Encke Gap (325 Km, or 200 miles wide) is seen here at the upper right (...). This image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 1, 2005, at a distance of approx. 853.000 Km (or about 530.000 miles) from Saturn. The image scale is 5 Km (3 miles) per pixel. The image has been contrast-enhanced and magnified by a factor of 3 to aid visibility.
|
|
Sagittarius_M-8_and_M-20.jpgSagittarius Region110 visite"In order for Life to have appeared spontaneously on Earth, there first had to be hundreds of millions of protein molecules wandering in the Universe. The Ninth Configuration.
But given the size of the planet Earth, and the one of the Universe, do you know how long it would have taken for just one of these protein molecules to appear entirely by chance?
Roughly ten to the two hundred and forty-third power billions of years. And I find that far, far more fantastic than simply believing in God".MareKromium
|
|
ZO-Saturn_New_Moon-S2008-S1-PIA11503.jpgSaturn's New Moon S/2008 S156 visiteCaption NASA:"A bright arc within Saturn's faint G-Ring holds a tiny gift: a small moonlet is just visible as a short streak near the ansa of the G-Ring Arc in the top of two versions of the same image.
The second (bottom) version of the image has been brightened to enhance the visibility of the G-Ring. The other streaks in this version of the image are stars smeared by the camera's long exposure time of 26". This version of the image shows a gap in the G-Ring which was faintly visible in an earlier Cassini movie (see PIA08327).
This view looks toward the sunlit side of the Rings from about 1° below the Ring-Plane. The image was taken in Visible Light with the Cassini Spacecraft narrow-angle camera on Jan. 28, 2009. The view was acquired at a distance of approx. 1,2 MKM (such as about 746.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 27°.
Image scale is roughly 7 Km (a little more than 4 miles) per pixel".MareKromium
|
|
| 8 immagini su 1 pagina(e) |
|
