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Colorful Privolva
7.04.2004 | Лунное фото дня
This alien landscape is not one of the satellites of Jupiter - it is the out of sight, totally out of mind farside of our own Moon. Kepler wrote a science fiction story, Somnium or Dream, about a trip to the Moon. He called the farside Privolva, which meant "Out of Sight of Earth".
Fractured Frac
6.04.2004 | Лунное фото дня
This is another one of the increasingly common amateur images that shows more than a Lunar Orbiter IV photo. John Sussenbach's great webcam image of Fracastorius seems to have about the same resolution...
Three Cheers for Three As!
5.04.2004 | Лунное фото дня
64 lunar craters have names than begin with the letter A. Three of them are shown here: Archimedes (diameter = 83 km; depth = 2.1 km), Autolycus (39 km; 3.4 km) and Aristillus (55 km; 3.6 km). The latter two craters are similar in morphology and in age.
Conjunctions Galore!
4.04.2004 | Лунное фото дня
Do you ever just go out and enjoy the sky? During the last few nights of March there was a lot to enjoy after sunset. Each night the Moon moved up from planet to planet.
Mercy, Mersenius!
3.04.2004 | Лунное фото дня
Mersenius is in the second rank of lunar craters. Not a must-see like Copernicus, Plato or Gassendi, but a good crater with more interesting features than are obvious. Mersenius is 84 km wide and about 2.3 km deep.
Interplanetary Comparisons - Mercury Photo of the Day
2.04.2004 | Лунное фото дня
I tricked you - or tried to. Yesterday's April 1st LPOD wasn't really of unidentified craters on the Moon, but was of the planet Mercury, taken by the Mariner 10 spacecraft during flybys...
What Part of the Moon is This?
1.04.2004 | Лунное фото дня
Recently, some photographs were recovered that had been misplaced since the 1970s. Unfortunately, the labels identifying the spacecraft and areas imaged are no longer attached to them. The pictures show craters and smooth plains that are hard to identify, suggesting that the area has otherwise been poorly imaged.
Great Graben!
31.03.2004 | Лунное фото дня
A graben is a linear block of land that has subsided between two parallel faults. On the Moon, such graben are usually called rilles - not the sinuous kind (which are lava channels), but the straight or arcuate ones.
Silicic Domes?
30.03.2004 | Лунное фото дня
Lunar volcanism was pervasive, producing mare lava flows and associated features such as sinuous rilles, pyroclastic deposits and domes. The magmas that made these features were basalts - melted mantle rocks rich in silica, oxygen, iron and magnesium. The latter two elements give basalts the dark color we see in the maria.
Hoover Dam (and Surroundings)
29.03.2004 | Лунное фото дня
The 97 km wide crater Arzachel is often overlooked, being near the superstars of Alphonsus and Ptolemaeus. But Steve Keene became fascinated with Arzachel early in March and, despite average seeing, acquired this fine image.