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Terra_Sirenum-PIA14366-PCF-LXTT.jpgFeatures of Terra Sirenum (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)66 visitenessun commentoMareKromium
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Fake_Sunrise.jpgTotally Beautiful, but totally Fake66 visiteImmagine pubblicata sulla prestigiosa Rubrica "NASA - Astronomy Picture of the Day" il giorno 10 Ottobre 2011. Si tratta di un esempio ulteriore di come il "fake-ben-fatto" (e pure assai suggestivo) abbia un successo ed un seguito sempre più eclatanti.
Noi, che pure adoriamo il Genere "Fantasy" (al quale questa foto appartiene per non meno del 99%) umilmente, dissentiamo e diciamo che un'immagine come questa (in sè - lo ripetiamo a chiare lettere - davvero molto affascinante e particolare) meritava senz'altro un riconoscimento, ma NON quello del "NASA - Picture of the Day". MareKromium
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SOL0003-NLA_398828283EDR_F0030004NCAM00504M-GB-LXTT-IPF.jpgHorizon and Sky - Sol 3 (RAW Natural Colors; credits for the additional process. and color.: Dr Gianluigi Barca/Lunar Explorer Italia/Italian Planetary Foundation) 66 visitenessun commentoMareKromium
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Craters-Unnamed_Crater-Terra_Cimmeria-PIA16266-PCF-LXTT-IPF.jpgUnnamed Crater with Gullies and Dunefield in Terra Cimmeria (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)66 visiteIn this frame, taken by the NASA - Mars Odyssey Orbiter during its 49.393rd orbit around the Red Planet, several Gullies of different shapes, depths and sizes located on the Southern Rim of an Unnamed Impact Crater in Terra Cimmeria can be seen. As you may easily notice, there are way more Gullies on the North-facing Inner Rim (such as the Southern Inner Rim) of this Unnamed Crater, and the reason of such a remarkable difference is found, most likely, in the circumstance that the Southern Region of the Crater itself gets more Sun-related warming than the other one, which is corresponding to the South-facing Inner Rim (such as the Northern Inner Rim).
Also well visible towards the top of the picture, right at the base of the Northern Inner Slopes (Wall) of this Unnamed Cimmerian Impact Crater, there is a small and Dark Dunefield (probably formed - once you take into duly consideration the peculiar-looking shapes and surroundings of the Dunes forming it - by "Migrating Dunes". Dunes which may contain, among Dust, Rocky Sands and Volcanic Ashes, also a significant amount of Iron Oxide). It must be said, however, that a Surface Feature like this last one (---> the Dark Dunefield), is really very common, specifically at these Middle (Southern) Latitudes.
Latitude: 48,25° South
Longitude: 129,612° East
Instrument: VIS
Captured: February, 1st, 2013
This frame (which is an Original Mars Odyssey Orbiter b/w frame published on the NASA - Planetary Photojournal with the ID n. PIA 16266) has been additionally processed and then colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Mars Odyssey Orbiter and then looked down, towards the Surface of Mars), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.MareKromium
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ZZ-Mercury-Craters-Mena_Crater-PIA17786-PCF-LXTT-IPF-01.jpgMena Crater, in detail (Possible Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)66 visiteIn this simple, and yet very interesting picture, taken by the NASA - MESSENGER Spacecraft on November, 13, 2013, we can get a relatively close look at the fresh, Bright-Rayed Impact Crater known as Mena (note: due to the distance between the Spacecraft and the Mercurian Surface, the Bright Rays of Mena Crater can just be barely seen in this image).
As you may want to notice, solidified Impact Melt formed some kind of a "Heart-shaped" and smooth Pond that is mostly concentrated on the South/Western Side of the Crater Floor; the quite obvious (---> very clear, easy to see) asymmetry existing between the aforementioned South/Western Side of the Floor and some (actually, a large) portion of its North/Eastern one, is due to the fact that Mena Crater did not form on a Flat Surface, but on the Sloping Rim of a much older Impact Crater (as it will be better seen tomorrow's contextual APOD).
Date acquired: November, 13th, 2013
Image Mission Elapsed Time (MET): 26657614
Image ID: 5189176
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 0,24° South
Center Longitude: 235,30° East
Solar Incidence Angle: 54,7° (meaning that the Sun, at the time that the picture was taken, was about 35,3° above the imaged Local Mercurian Horizon)
Emission Angle: 23,4°
Sun-Mercury-Messenger (or "Phase") Angle: 71,0°
This frame (which is an Original NASA - MESSENGER Spacecraft's b/w and NON Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 17786) has been additionally processed, contrast enhanced, magnified to aid the visibility of the details, Gamma corrected and then colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - MESSENGER Spacecraft and then looked down, towards the Western Edge of the Mercurian Impact Crater "Mena"), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among other things, the existence of different Elements (Minerals) present on the Surface of Mercury, each having a different Albedo (---> Reflectivity) and Chemical Composition.MareKromium
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101955-Bennu-001.gif101955 Bennu - North Polar Rotation (GIF-Movie)66 visiteCaption NASA:"This series of MapCam images was taken over the course of about 4 hours and 19 minutes on Dec. 4, 2018, as OSIRIS-REx made its first pass over 101955 Bennu’s North Pole.
The images were captured as the Spacecraft was inbound toward 101955 Bennu, shortly before its closest approach of the Asteroid’s Pole.
As the Asteroid rotates and grows larger in the field of view, the range to the center of 101955 Bennu shrinks from about 7,1 to 5,8 miles (such as about 11,4 to 9,3 Km).
This first pass was one of the five Flyovers of 101955 Bennu’s Poles and Equator that OSIRIS-REx conducted during its Preliminary Survey of the Asteroid".MareKromium
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3I-ATLAS_05.gif3I/ATLAS - Orbital Path (GIF-Movie)66 visitenessun commentoMareKromium
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SATURN-RINGSTRUCTURE-61896main_pia06349-516-387.jpgThe structure of the "Rings"65 visitenessun commento
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IO 2.jpgIo & Jupiter (from Cassini)65 visiteL'immenso Giove ed il piccolo (ma affascinante e VIVO, geologicamente parlando) Io, in un transito immortalato dalla Sonda Cassini, in transito accanto al Signore degli Dei ed in viaggio verso il Sistema di Saturno.
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Epimetheus from Voyager 1.jpgEpimetheus from Voyager 165 visiteUn'altra "Luna Minore" di Saturno, dalla forma bizzarra.
Forse un'altra "preda" dell'abbraccio gravitazionale di Saturno?
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Helene from Voyager 2.jpgHelene from Voyager 265 visiteAnche per "Helene" vale quanto detto per Epimetheus e le altre Lune Minori di Saturno: forme irregolari e dimensioni davvero modeste. Schegge (frammenti) di corpi più grandi i quali, oggi, ci rammentano catastrofi planetarie occorse in epoche remote, o dei semplici KBO, catturati da Saturno mentre si trovavano a passare nelle prossimità del Gigante Anellato?
Voi che dite?
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SOL191-2N143334314EFF7400P1745L0M1.jpgMars' rocky terrain (5) and bright-clear Sky65 visitenessun commento
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