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za 2004 god.
Goodacre's Imbrium
6.03.2004 | Lunnoe foto dnya
Goodacre's red volume The Moon is my favorite observer's guide to the Moon. The main reason is the 25 maps and assorted charts which are clear and uncluttered. Elger's 1895 The Moon also had wonderfully clear maps, but his Moon was shown in just four quadrant maps so little detail was depicted.
What's All The Excitement About Mars?
5.03.2004 | Lunnoe foto dnya
During the last year, bright Mars has performed numerous pirouettes with our Moon - approaching and even passing behind it at times. And well Mars should seek to hide, for the massive hype last summer...
Ptolemaeus Peak Heights
4.03.2004 | Lunnoe foto dnya
Lunar observers, long impressed by lengthy shadows of peaks, have often speculated on the their heights. Galileo used shadow lengths to estimate peaks heights, and Schroter, Madler and especially Schmidt determined a few thousand peak heights and crater depths this way. Shadow measurements at the telescope require great care, and are susceptible to systematic error.
Ptolemaic Sunset
3.03.2004 | Lunnoe foto dnya
Ptolemy, the Greek astronomer, dominated medieval science, and his crater dominates the central region of the Earth-facing hemisphere of the Moon. Ptolemaeus, the Latinized version of the Greek name, is 153 km wide and 2.6 km deep. The rim is battered and a piece is missing on the west side.
The Arrowhead
2.03.2004 | Lunnoe foto dnya
Lunar scientists don't always focus on the same objects as amateur observers. The latter group usually observes and images the same few dozen prominent features. The former group looks for anomalies that hint at unusual rock compositions or formation mechanisms.
New Moon's Arms
1.03.2004 | Lunnoe foto dnya
We say that the old Moon is in the new Moon's arms when its only a few days old and light bounced off the Earth faintly illuminates the portion of the Moon not directly lit by the Sun.
Marvelous Marius Rille
29.02.2004 | Lunnoe foto dnya
Sinuous rilles have led some lunar scientists astray. The curving outlines led to proposals that such rilles were meandering water streams, although by shape alone a giant worm might have been equally defensible! But the Moon's lack of water and life eliminate those origins.
Angular Basin
28.02.2004 | Lunnoe foto dnya
Hugging the northeastern edge of the Moon is a patch of mare at the center of the two-ring Humboldtianum impact basin. When seen from Earth under high sun lighting the dark mare floor is the most visible feature, and is 4.2 km lower than the basin edges according to Clementine altimetry data.
Structures of the Lunar Surface
27.02.2004 | Lunnoe foto dnya
Structural geology is the study of the landforms caused by horizontal or vertical movement of the crust. On Earth, much of structural geology concerns faults and folds created by the forces of plate tectonics. On the Moon, most structural or tectonic features appear to be associated with impact basins.
On the Moon with Apollo 15
26.02.2004 | Lunnoe foto dnya
The most visually dramatic Apollo landing site was Apollo 15 - on the edge of Hadley Rille and almost in the shadow of the Apennine Mountains. The goal of that mission was to seek information on how both of these features formed.