Startseite > Begriffe > Serbokroatisch (SH) > Prenektarski period
Prenektarski period
The geologic history of Earth's Moon has been divided into five broad time periods, or systems. From oldest to youngest, these are pre-Nectarian, Nectarian, Imbrian, Eratosthenian, and Copernican. These systems are defined by the number of impact craters on the ground surface (more craters = older surface) correlated to the absolute ages determined for the lunar rock samples returned to Earth by the U. S. Apollo missions and unpiloted Soviet Luna missions. The pre-Nectarian system extends from 4. 5 billion to 3. 9 billion years ago.
0
0
Verbessern
- Wortart: Nomen
- Synonym(e)
- Blossary
- Branche/Gebiet Astronomie
- Kategorie Planetenwissenschaft
- Company: PSRD
- Produkt
- Akronym-Abkürzung:
Andere Sprachen:
Was möchtest du sagen?
Begriffe aus den Nachrichten
Ausgewählte Begriffe
Branche/Gebiet Kunsthandwerk Kategorie Ölgemälde
vrt naslade
Bosch's most famous and unconventional picture, The Garden of Earthly Delights was painted between 1490 and 1510. The oil painting is on three panels, ...
Benutzer
Glossare mit Abbildungen
Lidia Cámara
0
Begriffe
2
Glossare
0
Beobachter
Collaborative Lexicography
Kategorie: Sprachen 1 1 Begriffe
Browers Terms By Category
- Osteopathy(423)
- Akupunktur(18)
- Alternative Psychotherapie(17)
- Ayurveda(9)
- Homöopathie(7)
- Naturheilkunde(3)
Alternative Therapie(489) Terms
- Biochemie(4818)
- Genetic engineering(2618)
- Biomedizin(4)
- Grüne Biotechnologie(4)
- Blaue Biotechnologie(1)
Biotechnologie(7445) Terms
- Meteorologie(9063)
- Allgemeine Wetterlage(899)
- Atmosphärenchemie(558)
- Wind(46)
- Wolken(40)
- Stürme(37)
Wetter(10671) Terms
- Weihnachten(52)
- Ostern(33)
- Frühlingsfest(22)
- Erntedankfest(15)
- Spanische Feste(11)
- Halloween(3)
Feste(140) Terms
- Allgemeine Meeresfrüchte(50)
- Schalentiere(1)