Grazie Donnacinzia!
![[:I]](./images/smilies/UF/icon_smile_blush.gif "Imbarazzato")
Secondo un approfondito articolo su Lunar and Planet Institute Si tratta di materiale basaltico scuro portato in superficie dall'impatto meteorico visibile sul bordo di Lobachevskiy.
Cita:
In the Lomonosov-Fleming region, Copernicus-type
cryptomare deposits are associated with Lobachevskiy and
Moiseev craters (Figure 4a). Lobachevskiy is an Imbrian-
aged crater with a diameter of 85 km. Two dark halo impact
craters (craters 12 and 13, Figure 3) excavate mare basalt
from beneath the Lobachevskiy ejecta deposits. Since mare
material can be identified on the inner wall of Lobachevskiy
(see Figure 3), a basalt deposit was also present in at least a
portion of the pre-impact target site.
Cita:
Figure 3. Clementine 750 nm image mosaic showing the Lomonosov-Fleming region under high Sun
illumination. The image mosaic is shown in simple cylindrical projection and has a spatial resolution of
1 km/pixel. The black vertical lines are areas where data are missing. The locations of 17 well-developed
dark-haloed impact craters are indicated by numbers (Table 1). The arrow indicates a small crater that has
excavated mare material from a dark layer on the wall of Lobachevskiy. Portions of the ejecta deposit of
the small crater are dark and exhibit enhanced FeO values. The Lomonosov-Fleming basin ring is shown
as a white dashed line.
Si tratta di materiale ricco di ossido di ferro (FeO)...Ruggine!
I documenti completi li potete trovare qui:
http://www.lpi.usra.edu/meetings/lpsc2002/pdf/1466.pdfhttp://www.spudislunarresources.com/Bib ... y/p/72.pdfPare che Mattingly su Apollo 16 durante un orbita lunare fu il primo ad identificare la striscia scura sull'orlo di Lobachevskiy, identificandola di primo acchito come colata lavica:
Cita:
An oblique view looking northwest at part of the wall of the crater Lobachevsky on the lunar far side. It shows a small crater on Lobachevsky's wall with unusual streaks of dark material that appear to have originated from the lower rim of the structure and to have moved down toward the floor of Lobachevsky. This feature was first noticed by T. K. Mattingly, the Apollo 16 CMP, who described the darker streaks as probable lava flows (Mattingly, El-Baz, and Laidley, 1972). However, the streaks can also be explained by the downslope movement of dark fragmental debris excavated from Lobachevsky's wall by the small crater. Closer to the lower border of the photograph is a bright area extending across Lobachevsky's rim. This area and other sinuous light-colored markings in the upper half of the photograph are on the periphery of an enormous field of light-colored swirls in this part of the far side (El-Baz, 1972a). The origin of the swirls is not well understood.-F.E.-B.
Ecco la foto dell'Apollo 16 che ritrae ciò che vide Mattingly:
FOTO AS16-121-19407 (H)
Mattingly volò su Apollo 16 ma era stato scelto per far parte di Apollo 13...chi ha visto il bellissimo film di Ron Howard "APOLLO 13" ricorderà come si temesse potesse aver contratto il morbillo da un'astronauta dell'equipaggio di riseva, ma mentre i suoi compagni di missione avevano già avuto la malattia da piccoli, egli non poteva dirsi altrettanto immune non avendola mai contratta...perciò restò a terra per paura che gli sarebbe venuta la febbre in missione...
Evidentemente la Nasa si ricordò di lui per la missione numero 16...
Nel film era interpretato dal bravissimo Gary Sinise...
Scusate la divagazione...quando ho letto di Mattingly non ho potuto non accennare ad uno dei miei film preferiti!
Login
Iscriviti
FAQ
Cerca
![[8]](./images/smilies/UF/icon_smile_8ball.gif "Palla Otto"){kind=icon}
Premio Esperto in Grafica ed Analisi Digitali