| Piú votate |
APOLLO 13 AS 13-62-8898-1.jpgAS 13-62-8898 - A "streak" in the Sky?246 visiteUn'altra immagine enigmatica e...unexplaianable, come - ahinoi... - tante altre. Le domande che ci sovvengono allorchè ci troviamo ad analizzare un frame di questo tipo sono le solite (e qui ci appoggiamo alla "scuola del Prof. Hoagland"): si tratta di un riflesso? E' un photoartifact? E' un oggetto "reale" (ivi: una cosiddetta "Anomalia Orbitale")?
A nostro parere, se volete darci un piccolo credito (non fosse altro perchè abbiamo, in più di 8 anni di lavoro, esaminato quasi l'intero Apollo Image Catalog) questo frame rappresenta un'autentica Anomalia Orbitale - e cioè, per i meno esperti, un "oggetto fisico (quindi non un riflesso o un photoartifact) che si trova all'esterno della Navicella USA e che "transita" o "si libra" nelle sue prossimità". Molto interessante il successivo detail mgnf realizzato dall'Amico "OldGrey" il quale, a nostro avviso, va a dare ulteriore supporto alla teoria che vorrebbe escludere il semplice riflesso o il difetto della pellicola.
(9 voti)
|
|
NGC-0281-0.jpgNGC 281 - Emission Nebula69 visite"...Restore to them, this very day, their fields, their vineyards, their olive orchards and their houses, and the interest on money, grain, wine and oil that you have been exacting from them..."
Nehemiah, 5:11
(9 voti)
|
|
ZP-Pluto System 01.jpgPluto's System: first scheme of the possible orbits60 visiteHubble reveals two previously undetected satellites likely orbiting Pluto in the same plane as Pluto's moon, Charon. The two objects are estimated to have diameters between 30/40 and 100/125 miles (such as from about 48/64 and 160/200 Km) and both orbit roughly 27.000 miles (about 43.000 Km) from Pluto.
(9 voti)
|
|
ZL-The Moons of Pluto.jpgNew "moons" for Pluto? Early news (first picture at LR)60 visiteTwo small moons have been discovered orbiting Pluto, bringing the Planet's retinue of known satellites to 3 and leaving scientist to wonder how it could be.
The newfound moons orbit about 27.000 miles (44.000 Km) from Pluto, more than twice as far as Charon, Pluto's other satellite, and they are 5000 times dimmer than Charon.
Preliminary observations suggest they are in circular orbits around Pluto and in the same plane as Charon, said Hal Weaver of the Johns Hopkins Applied Physics Laboratory.
"That suggests they probably formed at the same time as Charon" Weaver told SPACE.com in a telephone interview. NASA planned a teleconference with reporters to announce the discovery.
While scientists had predicted there might be more moons, the newfound setup is surprising nonetheless, in part because Pluto is smaller than our own Moon.
"It's almost like a mini Solar System" Weaver said.
How can something about 70% the size of Earth's Moon have all these satellites? How can that happen?".
(9 voti)
|
|
NGC-3242-HST.jpgNGC 3242 - The "Ghost of Jupiter" Nebula (HST)60 visite"...Nihil parens illa rerum omnium sine ingentibus causis genuit..."
(Plinio)
"...Nulla (la Natura) ha prodotto senza che sussistessero validi motivi..." (ovvero: tutto quanto esiste in Natura serve ad uno scopo, altrimenti ... non esisterebbe!)
(9 voti)
|
|
AB-AB-vg2_2686312.gifThe limb of Uranus62 visiteOriginal caption:"Voyager 2 image of the limb of Uranus from about 694.000 Km. This narrow angle view is about 5.100 Km across and was taken 12 hours after closest approach. The image is centered at -10, 212 and North is up. (Voyager 2, FDS 26863.12)".
(9 voti)
|
|
Earth From Mars.jpgMy "Day", your "Night"104 visiteThough Earthlings will be able to get a good look at Mars during close approach, NASA's 2 Rovers on Mars will not be able to see Earth. That's because at the moment, Earth is on the daytime side of Mars. As shown in the top half of this artist's rendering, when it's nighttime on Earth, it's daytime on Mars. After Earth passes Mars, the Rovers will be able to see the sunlit side of Earth again just before dawn. The bottom half of this illustration shows what the Rovers would see if they looked toward Earth.
(9 voti)
|
|
Ganymede-PIA00707.jpgFine details of Ganymede icy-surface59 visiteDramatic view of fine details in ice hills and valleys in an unnamed region on Jupiter's moon Ganymede. North is to the top of the picture and the sun illuminates the surface from the left. The finest details that can be discerned in this picture are only 11 mt across (similar to the size of an average house) some 2000 times better than previous images of this region. The bright areas in the left hand version are the sides of hills facing the sun; the dark areas are shadows. In the right hand version the processing has been changed to bring out details in the shadowed regions that are illuminated by the bright hillsides. The brightness of some of the hillsides is so high that the picture elements "spill over" down the columns of the picture. The image was taken on June 28, 1996 from a distance of about 1000 Km.
(9 voti)
|
|
Io-PIA00715.jpgIo: three views of the one and the same60 visiteThree views of the full disk of Jupiter's volcanic moon, Io, each shown in natural and enhanced color. These three views, taken by Galileo in late June 1996, show about 75 percent of Io's surface. North is up. The top disks are intended to show the satellite in natural color (but colors will vary with display devices) while the bottom disks show enhanced color (near-infrared-, green-, and violet-filtered images) to highlight details of the surface. These images reveal that some areas on Io are truly red, whereas much of the surface is yellow or light greenish. (Accurate natural color renditions were not possible from the Voyager images taken during the 1979 flybys because there was no coverage in the red.) The reddish materials may be associated with very recent fragmental volcanic deposits (pyroclastics) erupted in the form of volcanic plumes. Dark materials appear in flows and on caldera floors. Bright white materials correspond to sulfur dioxide frost, and bright yellow materials appear to be in new flows such as those surrounding Ra Patera. The red material may be unstable since the color appears to fade over time. This fading appears to occur most rapidly in the equatorial region and more slowly over the polar regions; surface temperature may control the rate of transformation. Comparisons of these images to those taken by the Voyager spacecraft 17 years ago have revealed that many changes have occurred on Io. Since that time, about a dozen areas at least as large as the state of Connecticut have been resurfaced. Io's diameter is 3632 km.
(9 voti)
|
|
Dione-PIA07745-6~1.jpgDione's horizon (full)60 visiteUn commento, a chiusura della panoramica sull'orizzonte di Dione - così come visto dalla Sonda Cassini mentre si allontanava da questa "Luna di Ghiaccio" (o "Icy-Moon", come dice la NASA) - ci pare giusto farlo cercando di concentrarci sul significato "profondo" delle immagini e sul possibile motivo per cui la visione di Saturno e del suo Sistema non pare incontrare un grande interesse da parte dei Lettori. Abbiamo già detto che, in fondo, quello che "cattura" di più l'attenzione è ciò che si trova - sempre relativamente - "più vicino" a noi: la Luna e Marte, su tutti. Ma esistono anche altri fattori condizionanti:
1) l'eco "mediatica" dell'evento. Di Marte, ogni tanto, si parla; della Luna...già di meno. Ma di Saturno, ve lo possiamo garantire, non si parla mai;
2) il modo di "porgere" l'evento. La NASA (e l'ESA) non stimolano MAI l'immaginazione e l'immaginario dei Lettori (Tecnici ed "Amateurs"), ma si limitano a fornire solo aridi dati sulla cui accuratezza, per giunta, si potrebbe discutere per anni.
(9 voti)
|
|
Mimas-PIA07608.jpgMimas and the Rings59 visiteOriginal caption:"Saturn's shadow spreads across the Rings here, extending beyond the F-Ring and its tenuous, flanking ringlets. This view catches Saturn's moon Mimas on its day-long sojourn around the Planet.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 24, 2005, at a distance of approx. 2,1 MKM (such as about 1,3 MMs) from Mimas and at a phase angle of 84°. The image scale is 13 Km (about 8 miles) per pixel".
(9 voti)
|
|
NGC-0253-2.jpgNGC 253 - "Dusty" Spiral Galaxy57 visite"...Si trovò al centro di una visione che cavalcò vorticosamente il Creato, dall’inizio dei tempi ad un oltre che non tenne più conto del Tempo. I primi istanti dell’Universo gli passarono davanti come enormi maree di luci che diedero presto posto a più densi laghi di materia ancora incandescente che, presto, divennero rocce, alberi e creature che gli venivano incontro attraversandolo come fosse trasparente mentre si allontanavano dalla scena.
A mano a mano che la velocità diminuiva, anche gli eventi sembravano congelare le loro forme e concentrarsi sempre più in un unico scenario, eletto quasi a rappresentanza di quanto continuava a succedere nel resto del Creato. La velocità delle visioni rallentò ancora, fino a fermarsi su una piccola radura dove una creatura minuta, pelosa ed alquanto malferma sulle gambe, era lì in piedi a guardarsi intorno, come se stesse aspettando o cercando qualcosa..."
Giuseppe Spina - "Proiezioni"
(9 voti)
|
|
| 25332 immagini su 2111 pagina(e) |
 |
|
|
|
|
160 | |
|
|
|
|
