Glossary term: Cratere
Description: Un cratere è una depressione circolare sulla superficie di un pianeta solido, di una luna o di un altro piccolo oggetto nello spazio. Alcuni crateri sono vulcanici, soprattutto sulla Terra e su Venere, ma la maggior parte sono crateri da impatto, causati dall'impatto di una grande roccia spaziale o di un nucleo di cometa. Ci sono decine di crateri da impatto sulla superficie della Terra e migliaia sulla Luna. I mari lunari, le grandi macchie circolari più scure sulla Luna, sono giganteschi crateri da impatto, formatisi miliardi di anni fa e poi riempiti di lava, che si è poi solidificata.
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
Related Media
Cerere
Credit: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA / Justin Cowart
License: CC-BY-2.0 Creative Commons Attribuzione 2.0 Generico icons
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