Best Nectarian

Mare Imbrium Basin is a massive, ancient impact basin located on the Moon’s nearside. It represents one of the largest lunar maria, formed by a colossal collision event approximately 3.85 billion years ago. This vast expanse of basaltic lava flows makes it a significant area for scientific study reg...

Tsiolkovskiy is a large impact crater located on the far side of the Moon. Its defining feature is a 180-kilometer diameter basin filled with dark basaltic lava flows. This crater provides scientists with valuable data regarding early solar system impacts and lunar geology. It’s primarily studied by...

Clavius is a substantial impact crater located on the southern hemisphere of the Moon. It measures approximately 225 kilometers in diameter making it one of the largest features formed by impacts on the lunar surface. The crater’s interior displays a prominent series of smaller craters, a characteri...

Schrödinger is a substantial impact crater situated on the Moon’s southern polar region. Its significance stems from its youth within the Schrödingerian period of lunar formation. The crater's large size and complex multi-ring structure make it a valuable target for scientific study. Researchers inv...

Theophilus is a large impact crater on the Moon’s inner nearside. Its significance lies in its exceptional preservation of a complex geological structure. The crater boasts a diameter of approximately 100 kilometers and features dramatically terraced walls rising from a central peak. Scientists stud...

Gassendi is a substantial impact crater on the Moon’s surface measuring approximately 101 kilometers in diameter. Its prominent features include a flooded floor and extensive rille systems that dramatically fracture its terrain. This crater is of particular interest to planetary scientists studying...

Crisium Basin is a substantial lunar crater located on the nearside of the Moon. It’s notable as the formation zone for Mare Crisium, a large dark plain. The basin's size and the historical significance of Luna 24’s exploration make it relevant to planetary scientists studying impact processes and e...

Moretus is a medium-sized impact crater on the Moon’s surface. Its significant size – measuring approximately 114 kilometers in diameter – features a prominent central peak rising from its center. Located near the lunar south pole, Moretus provides scientists with valuable data about early impacts w...

The Serenitatis Basin is a substantial impact basin on the Moon’s nearside. Formed by an ancient collision, it's notable for its expansive size and geological features. The Apollo 17 mission conducted extensive studies of its southwestern region, specifically within the Taurus-Littrow valley. Scient...

The Hertzsprung Basin is an immense impact crater situated on the far side of the Moon. Measuring approximately 570 kilometers in diameter, it is classified as a multi-ring impact basin rather than a standard crater. The interior of Hertzsprung is heavily eroded and contains a distinct peak-ring str...

The Mare Nectaris Basin is an ancient impact basin on the near side of the Moon that was formed when a massive asteroid struck the lunar surface. The impact event serves as the geological marker for the beginning of the Nectarian period, which occurred approximately 3.92 billion years ago. Over time...

Arzachel is a prominent lunar impact crater located in the south-central highlands of the Moon, with a diameter of roughly 96 kilometers. It features steep, terraced walls and a well-defined central peak that is offset from the crater's center. The crater belongs to the Nectarian period and is part...

Alphonsus is a large lunar impact crater approximately 119 kilometers in diameter, located in the central highlands south of Mare Imbrium. Its relatively flat floor contains dark halo craters, evidence of volcanic gas eruptions, making it a notable site for lunar geology studies. Alphonsus was the t...

Wargentin is a lunar impact crater located in the southwest section of the Moon's near side, named after the 18th-century Swedish astronomer Pehr Wilhelm Wargentin. It is highly unusual among lunar formations because it is completely filled to its rim by solidified basaltic lava. This geological pro...

Mare Humorum, Latin for the Sea of Moisture, is an ancient impact basin located on the near side of the Moon. The basin has a diameter of approximately 425 kilometers and is characterized by a well-defined ring structure. Its interior was subsequently filled with dark, basaltic lava from volcanic ac...