Some lunar impacts have characteristics that make them neither "simple" nor "complex." Think of them as the “young adults” of the Moon’s crater population.
If we ever try to live on the Moon, the best locations will be polar mountains bathed in nearly continuous sunlight.
An amateur who devoted his live to chronicling the Moon, and became one of the world's most renowned lunar specialists, has died at age 94.
As the moon wanes in the gibbous phase in the nights to come, see if you can find and observe some of 100 of Charles Wood's classic lunar hit list, including craters, basins, mountains, rilles, and domes.
Tycho is the most conspicuous crater visible near full Moon, shining brilliantly and radiating great long rays. But the rays from Tycho that partially encircle the full Moon are not distributed equally in all directions.
The crater Plato is one of the superstars for observers of the Moon. It's big, conspicuous with its dark floor ringed by a bright rim, and long a subject of speculation, and controversy.
Oblique impact resolves the mystery of one of the most bizarre crater pairs on the Moon: Messier and Messier A. Previous explanations for this crater pair ranged from imaginative to fantastical. All were wrong.
Mare Nectaris is the smallest of the circular maria on the Moon; lavas extend only 350 kilometers from shore to shore. But the Nectaris basin is beautifully defined by the spectacular Altai Scarp, which forms the southwestern rim of the basin.
The absolute best example of a lunar fault is the Straight Wall. This well-known lunar feature is a long thin line that never fails to impress; even through a small telescope it's a fascinating sight.
The full Moon is very bright, but there are still many fascinating features to observe during this or any phase when you look far from the terminator.
On five consecutive mornings beginning January 29th, early morning risers have an opportunity to glimpse the Moon’s most spectacular "hidden" landform.
This mare is a challenging sight; view it July 16th to 19th and August 12th to 15th.