| |
| Risultati della ricerca nelle immagini - "1-Ceres" |
006-Ceres.jpg1-Ceres (natural colors, from HST - credits: NASA/ESA et al.)55 visiteThe Hubble image of Ceres on the reveals bright and dark regions on the asteroid's surface that could be topographic features, such as craters, and/or areas containing different surface material. Large impacts may have caused some of these features and potentially added new material to the landscape. The Texas-sized asteroid holds about 30 to 40% of the mass in the Asteroid Belt.
Ceres' round shape suggests that its interior is layered like those of terrestrial planets such as Earth. The asteroid may have a rocky inner core, an icy mantle, and a thin, dusty outer crust. The asteroid may even have water locked beneath its surface. It is approx. 590 miles (950 Km) across and was the first asteroid discovered in 1801.
The observation was made in visible and ultraviolet light between December 2003 and January 2004 with the HST Advanced Camera for Surveys. The color variations in the image show either a difference in texture or composition on Ceres' surface.
Astronomers need the close-up views of the Dawn spacecraft to determine the characteristics of these regional differences.
MareKromium
|
|
007-Ceres-PIA10235.jpg1-Ceres (natural colors, from HST - credits: NASA/ESA et al.)57 visiteCaption NASA:"This is a NASA Hubble Space Telescope color image of 1-Ceres, the largest object in the Asteroid Belt.
Astronomers enhanced the sharpness in these Advanced Camera for Surveys images to bring out features on Ceres' surface, including brighter and darker regions that could be asteroid impact features.
The observations were made in Visible and UV Light between December 2003 and January 2004.
The colors represent the differences between relatively red and blue regions. These differences may simply be due to variation on the surface among different types of material.
Ceres' round shape suggests that its interior is layered like those of terrestrial planets such as Earth. Ceres may have a rocky inner core, an icy mantle, and a thin, dusty outer crust inferred from its density and rotation rate of 9 hours. Ceres is approximately 590 miles (about 950 Km) across and was first discovered in 1801".MareKromium
|
|
008-Ceres-Dumas_300-PCF-LXTT.jpg1-Ceres from Keck Observatory105 visitenessun commentoMareKromium
|
|
009-1-Ceres-PIA19884-PCF-LXTT-IPF-1.jpgWhite Unnamed Crater on 1-Ceres (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)61 visiteToday's APOD is an Extra Detail Magnification (or "EDM", for short) of yesterday's Contextual (or "CTX", for short) Frame, taken by the NASA - Dawn Spacecraft that shows us a small White Crater (---> also informally known as "White Spot") that is located in the Northern Hemisphere of the Dwarf Planet named 1-Ceres.
Now, we ask you one (extremely complicated, in fact) question that you, however, should try to answer: why, on 1-Ceres, the huge and deep Impact Craters do not show "White Material" inside them, while, on the other hand, the small and shallow ones (Impact Craters) do? Probably because, but we, as IPF, cannot be sure of this (just like everyone else), the White Material, in the end, does not belong to/comes from the Sub-Surface of 1-Ceres (as we thought, at the beginning), but it belongs to/comes from the Impactors. And you, what do you think?...If you want to share your opinion, please, write us at alphacentauri@intercom.it
The picture was taken from an altitude of approx. 915 miles (such as about 1472,5461 Km) from the Surface, with a resolution of roughly 450 feet (such as about 137,16 meters) per pixel, was taken on August 21, 2015.
This image (which is a crop taken from an Original NASA - Dawn Spacecraft's b/w and NON Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19884 - Dawn HAMO Image 8) has been additionally processed, extra-magnified to aid the visibility of the details, contrast enhanced and sharpened, Gamma corrected and then colorized (according to an educated guess carried out by Dr Paolo C. Fienga-LXTT-IPF) in Absolute Natural Colors (such as the colors that a normal human eye would actually perceive if someone were onboard the NASA - Dawn Spacecraft and then looked ahead, towards the Surface of 1-Ceres), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.MareKromium
|
|
010-1-Ceres-PIA19898-PCF-LXTT-IPF.jpgUnnamed Crater on the Terminator of 1-Ceres (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)61 visiteThis simply beautiful Contextual (or "CTX", for short) Frame, taken by the NASA - Dawn Spacecraft on August, 26, 2015, shows us, among other interesting things, an Ancient and extremely Complex Unnamed Impact Crater (which seems to be characterized by the presence of an unusually-looking - we would say, as IPF, "columnarly-shaped", maybe? - Central Peak) that is located near the Terminator Line of the Dwarf Planet named 1-Ceres.
If you will pay attention to the frame, you might agree on the fact that the long shadows - which are very well visible all over the picture - make the whole scene - with its deeply complex Surface Details - even more suggestive.
The picture was taken from an altitude of approx. 915 miles (such as about 1472,5461 Km) from the Surface, with a resolution of roughly 450 feet (such as about 137,16 meters) per pixel, was taken on August 21, 2015.
This image (which is an Original NASA - Dawn Spacecraft's b/w and NON Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19898 - Dawn HAMO Image 20) has been additionally processed, extra-magnified to aid the visibility of the details, contrast enhanced and sharpened, Gamma corrected and then colorized (according to an educated guess carried out by Dr Paolo C. Fienga-LXTT-IPF) in Absolute Natural Colors (such as the colors that a normal human eye would actually perceive if someone were onboard the NASA - Dawn Spacecraft and then looked ahead, towards the Surface of 1-Ceres), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.MareKromium
|
|
011-1-Ceres-Full_Rotation.gif1-Ceres: Full Rotation (GIF-Movie - Credits: NASA/JPL)103 visitenessun commentoMareKromium
|
|
012-1-Ceres-PIA19620-PCF-LXTT-IPF.jpgHuge Mountain on 1-Ceres (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)66 visiteLocated just on the Limb (obviously, only from our point of view) of the so-called "Dwarf Planet" 1-Ceres, at about 7 o'clock of 1-Ceres' (highly uneven) disk, we can see - once again - the large Flat-Topped Mountain - about 3 miles (such as approx. 4,82802 Km) high, surrounded by (relatively) smooth Terrain - that we have already shown you in yesterday's APOD. Probably it is useless to say - but it is a good thing, in our opinion, as IPF, to underline this specific circumstance - the so-called Emission Angle here is very high. The "new" White Spot, as well as the white Material that we have noticed still in yesterday's APOD, are also clearly visible here, in this picture.
As we have already said in the past, also this specific frame is just one among the first snapshots coming from Dawn's second Mapping Orbit of 1-Ceres, which is carried out from an altitude of approx. 2700 miles (such as about 4345,218 Km). Even in this case, the Resolution is roughly 1400 feet (such as approx. 426,72 meters) per pixel.
The image (which is an Original NASA - Dawn Spacecraft's b/w and NON Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19587 - Dawn Survey Orbit Image 19) has been additionally processed, magnified to aid the visibility of the details, contrast enhanced and sharpened, Gamma corrected and then colorized (according to an educated guess carried out by Dr Paolo C. Fienga-LXTT-IPF) in Absolute Natural Colors (such as the colors that a normal human eye would actually perceive if someone were onboard the NASA - Dawn Spacecraft and then looked ahead, towards the Limb and Surface of 1-Ceres), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.MareKromium
|
|
015-Ceres_and_Vesta.jpg4-Vesta and 1-Ceres from HST (natural colors)56 visiteThese Hubble Space Telescope images of Vesta and 1-Ceres show two of the most massive asteroids in the Asteroid Belt, a Region between Mars and Jupiter.
The images are helping astronomers plan for the Dawn spacecraft’s tour of these hefty asteroids. On July 7, 2007, NASA is scheduled to launch the spacecraft on a 4-year journey to the Asteroid Belt. Once there, Dawn will do some asteroid-hopping, going into orbit around Vesta in 2011 and Ceres in 2015. Dawn will be the first spacecraft to orbit two targets. At least 100.000 asteroids inhabit the Asteroid Belt, a reservoir of leftover material from the formation of our Solar-System planets some 4,6 Billion Years (BY) ago.MareKromium
|
|
016-1-Ceres-Occator-Black_Shadow-01.jpgDark "Spot" inside Occator Crater (CTX Frame)118 visiteMareKromium
|
|
017-1-Ceres-Occator-Black_Shadow-02.jpgDark "Spot" inside Occator Crater (EDM)135 visiteMareKromium
|
|
018-1-Ceres-PIA22764.jpgOccator Crater on the Limb...125 visitenessun commentoMareKromium
|
|
020-1-Ceres-PIA22641.jpgUnusually-looking Surface Feature on 1-Ceres108 visiteCaption NASA Originale:"This image was obtained by NASA's Dawn Spacecraft on July 17, 2018 from an altitude of about 25 miles (such as approx. 40,23 Km).
The center of this picture is located at about 31,0° South Latitude and 248,9° East Longitude".MareKromium
|
|
| 13 immagini su 2 pagina(e) |
1 |
|
|
|
