المستندات والموارد - نتائج البحث
نتائج البحث
Waning gibbous to last quarter
صورة
الشرح: Three images of the moon from the waning gibbous phase (left) to the last quarter phase (right) taken from the Southern Hemisphere (New Zealand). The illuminated area visible appears to shrink as the images progress.
In the last phase visible here (the last quarter) only half of the moon's illuminated half is visible. This phase is popularly known as half moon.
المصدر: Dave Young / dcysurfer
رابط المصدر
مصطلحات المعجم:
الطور القمري , التربيع القمري , الأحدب المتناقص , نصف قمر
فئات:
النظام الشمسي
الترخيص: المشاع الإبداعي نَسب المُصنَّف 2.0 عام المشاع الإبداعي نَسب المُصنَّف 2.0 عام أيقونات
ملف
( صورة
1.45 MB)
Mare Crisium - Sea of Crises
صورة
الشرح: The image shows the lunar Mare Crisium, the “Sea of Crises,” as seen by NASA’s Lunar Reconnaissance Orbiter in 2015. The photo size is 750 × 750 km, about the size of Germany. Mare Crisium is located in the Moon’s Crisium basin, near the great Mare Tranquillitatis on the near side of the Moon. It is visible from Earth and is characterized by a relatively smooth and flat surface surrounded by cliffs and highlands. The basin that now contains the Mare Crisium was formed by a massive impact event likely during the Nectarian period approximately 3.9 billion years ago. During this time in lunar history, major basins including the Crisium basis were formed by large impact events. Later in lunar history, the basin was flooded by lava to form the dark and flat plain we see today. Its floor is about 1.8 kilometers below the typical lunar surface level. The study of lunar maria provides insights into the volcanic history and impact processes that have affected the Moon and other celestial objects.
المصدر: NASA, Lunar Reconnaissance Orbiter
رابط المصدر
مصطلحات المعجم:
القمر , بحر القمر
فئات:
النظام الشمسي
الترخيص: الملكية العامة الملكية العامة أيقونات
ملف
( صورة
6.78 MB)
.png){kind=link}
