| Risultati della ricerca nelle immagini - "ring" |
APOLLO 15 AS 15 84-11257 G-1.jpgAS 15-84-11257 - Layering?146 visiteOriginal caption:"123:19:35 MT. Rightward from AS 84-11256 with good overlap. Note the apparent layering in the formation just below center on the right. The mare surface is believed to have been built up in a series of relatively thin lava flows with some impact 'weathering' of each fresh surface before the next flow. A cross-section would show a series of thin, horizontal layers".
|
|
APOLLO 15 AS 15 84-11257 HR-2.jpgAS 15-84-11257 - Layering? (HR) - detail mgnf126 visitenessun commento
|
|
Aeroshell - Mars Artwork.jpgThe Aeroshell174 visitenessun commento
|
|
Comets-Comet_Siding_Spring-PIA12836.jpgComet Siding Spring54 visiteCaption NASA:"Is it a bird, or a plane? It's comet Siding Spring streaking across the sky, as seen by NASA's Wide-field Infrared Survey Explorer, or WISE.
The comet, also known as C/2007 Q3, was discovered in 2007 by observers in Australia. The snowball-like mass of ice and dust spent billions of years orbiting in the deep freeze of the Oort Cloud, a spherical cloud of comets surrounding our Solar System. At some point, it got knocked out of this orbit and onto a course that brings it closer to the Sun. Sunlight has warmed the Comet, causing it to shed ices and dust in a long tail that trails behind it.
On October 7, 2009, comet Siding Spring passed as close as 1,2 Astronomical Units from Earth and 2,25 Astronomical Units from the Sun (an Astronomical Unit - AU - is the distance between the Sun and Earth). Now, the comet is leaving the warmer, more hospitable neighborhood of the Solar System and heading back out to chillier parts. In this view, longer wavelengths of InfraRed Light are red and shorter wavelengths are blue.
The comet appears red because it is more than ten times colder than the surrounding stars. Colder objects give off more of their light at longer wavelengths.
An ice cube, for example, pours out a larger fraction of its light at longer InfraRed wavelengths than a cup of hot tea emits".MareKromium
|
|
ESP_011631_1515_RED_abrowse.jpgInside Hellas Basin (Natural Colors; credits: Lunar Explorer Italia)85 visiteThis image shows part of the floor of an impact crater on the Northern Rim of the giant Hellas Basin.
Hellas includes the lowest elevations on Mars, and may have once held lakes or seas; layered rock outcrops occur around much of the edge of the basin. At this site, a large impact crater (about 90 kM across) was partly filled by layered rocks. These rocks on the crater floor are now eroding and forming strange pits.
Here, the layers are mostly exposed on a steep slope which cuts across much of the image. On this slope, they crop out as rocky stripes, some continuous and others not. The material between the stripes is mostly covered by debris, but some areas of exposed rock are visible. The slope is capped by a thick, continuous layer that armors it against erosion; once this cap is gone, the lower material is removed rapidly, forming the steep slope. At the base of this slope, rocks on the floor of the pit appear bright and heavily fragmented by cracks known as joints. The variation in rock types suggests that the rocks here were deposited by multiple processes or in different environments. Sites like this may preserve a record of conditions on early Mars.
Mars Local Time: 15:55 (middle afternoon)
Coord. (centered): 28,4° South Lat. and 57,1° East Long.
Spacecraft altitude: 256,9 Km (such as about 160,6 miles)
Original image scale range: 25,7 cm/pixel (with 1 x 1 binning) so objects ~51,4 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,3°
Phase Angle: 60,1°
Solar Incidence Angle: 60° (meaning that the Sun is about 30° above the Local Horizon)
Solar Longitude: 193,8° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
|
|
ESP_023803_1345_RED_abrowse.jpgClay-bearing Layered Deposit located within an Unnamed Crater, North of Proctor Crater (Absolute Natural Colors; credits for the additoonal process. and color.: Dr Paolo C. Fienga - Lunexit Team)206 visiteMars Local Time: 14:19 (Early Afternoon)
Coord. (centered): 45,4° South Lat. and 28,0° East Long.
Spacecraft altitude: 253,0 Km (such as about 158,1 miles)
Original image scale range: 25,3 cm/pixel (with 1 x 1 binning) so objects ~ 76 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 6,5°
Sun-Mars-Spacecraft (or "Phase") Angle: 55,9°
Solar Incidence Angle: 51° (meaning that the Sun is about 39° above the Local Horizon)
Solar Longitude: 350,2° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromium
|
|
ESP_026061_1435-PCF-LXTT-002.jpgLayering on an Unnamed Southern Crater Rim (EDM - Absolute Natural Craters; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)80 visiteMars Local Time: 15:13 (early afternoon)
Coord. (centered): 36,4° South Lat. and 302,3° East Long.
Spacecraft altitude: 251,9 Km (such as about 157,4 miles)
Original image scale range: 50,4 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 51 cm across are resolved (with 4 x 4 binning)
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 1,2°
Sun - Mars - MRO (or "Phase") Angle: 75,0°
Solar Incidence Angle: 76° (meaning that the Sun is about 14° above the Local Horizon)
Solar Longitude: 71,6° (Northern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
|
|
OPP-SOL1329-1P246169558EFF8754P2379L2M1.jpgThe True Colors of Victoria - sample n. 4 (Sol 1329)55 visitenessun commentoMareKromium
|
|
OPP-SOL1342-1P247331287ESF8788P2396L6M1-1.jpgHighly Reflective Object on Victoria's Rim - Sol 1342 (credits: Dr Marco Faccin)75 visiteCosì come la NASA stessa ci ha insegnato, le colorizzazioni (sìano esse in colori veri, o approssimativamente veri, o falsi) non sono solamente un modo per rendere più "godibili" ai nostri occhi i frames in arrivo da Marte, anzi: la - chiamiamola così - "intrinseca bellezza" dell'immagine è un elemento minore.
Ciò che conta sono i dati che possiamo estrapolare dal quadro.
Da questa bellissima elaborazione - in falsi colori - di un frame Opportunity il quale ci mostra una porzione dell'inner rim di Victoria, emerge - con grande chiarezza - un rilievo curioso che non solo sembra essere "appoggiato" al gradino di roccia visibile nell'immagine, ma la cui albedo relativa (e cioè l'albedo del rilievo in rapporto all'albedo del paesaggio che lo circonda ed al quale accede) è elevata in maniera davvero eclatante.
Di che cosa si tratta?
Forse di un cristallo? Un frammento di metallo? Oppure una roccia "lucida"?
Qualunque cosa sia, è evidente l'"estraneità" del rilievo rispetto a quanto lo circonda.
Peccato che la NASA non abbia speso nemmeno una parola al riguardo...MareKromium
|
|
OPP-SOL862-1F204712713EFF73HJP1205R0M1-2.jpgHorizon, with tampering (detail mgnf) - Sol 86261 visitenessun commento
|
|
OPP-SOL878-1P206131502EFF74AZP2447R2M1.jpgCancellation?!? - Sol 87886 visitenessun commento ulteriore
|
|
OPP-SOL919-1N209771930EFF758ZP0785R0M1.jpgTotally Washed! - Sol 91968 visitePotremmo allietarVi con una serie di svariati frames inguardabili, nei quali la "piallatura" digitale ha (ancora una volta) raggiunto nuovi vertici prima insospettabili, ma abbiamo preferito offrirVi un solo "strazio" (per gli occhi e per il cuore), ma alquanto esemplificativo: tutto quello che si trova al di sopra della tracciatura rossa è - in maniera così ovvia da risultare del tutto irritante - stato "lavato via". Che si tratti, come molti pensano, di una sorta di "censura" alla buona, è probabile; che si tratti di un vizio nella trasmissione dell'immagine, diremmo che è improbabile; che si tratti di un effetto "naturale" dovuto - ad esempio - ad un leggero venticello che smuove e solleva nuvole di micropolveri (considerata la tessitura del suolo di Meridiani) a noi pare impossibile.
Per il resto...decidete Voi.
|
|
| 19 immagini su 2 pagina(e) |
1 |
|
