From the time of Thales of Miletus, in the fifth century B.C., down to that of Copernicus in the fifteenth and Tycho Brahe in the sixteenth century A.D., observations have been from time to time carried on with more or less correctness, until in the present day the altitudes of the lunar mountains
have been determined with exactitude.
Your lucky lunar mountain
range is the Montes Archimedes.
A number of craters and lunar mountain
ranges can be seen with a simple pair of binoculars, held as steady as possible.
Ebb and Flow deliberately plunged into a lunar mountain
in December after mapping the moon's gravity field in unprecedented detail.
A pair of Nasa moon-mapping probes, Ebb and Flow, the two spacecraft comprising Nasa's Gravity Recovery and Interior Laboratory (GRAIL) mission, smashed themselves into a lunar mountain
on Monday, ending a year-long mission that is shedding light on how the solar system formed.
Indeed, lunar mountain
ranges differ from their terrestrial counterparts in that most of the former are the rims of impact basins, while the latter are built up through tectonic activity.
Instead of taking a pointlike star as their guide, they opted to use an extended object--a sunlit lunar mountain
. Locking onto a mountain located between Mare Foecunditatis and Mare Tranquillitatis, the optics system produced a spectacularly detailed image.
The best guess is that Luna 15 smashed into the side of a lunar mountain
at about 300mph.
Because lunar mountain
ranges are named for terrestrial chains, I informally call them the Wasatch Mountains, named after a range in Utah.
Mission controllers made a final trajectory tweak on September 1st to avoid clipping a lunar mountain
one orbit too early.
On this occasion the astronomers used a sunlit lunar mountain
peak just beyond the terminator as their "guide star" during the 0.22-second exposure.
For instance, in his description of the lunar mountain
Piton (S&T: October 1965, page 251), he noted, "The slope angles of the mountain sides are uncertain, but may be only about 12[degrees] to 15[degrees].