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Glossary term: Crateras de impacto

Description: Uma cratera de impacto é uma depressão na superfície de um planeta, lua ou outro corpo sólido menor do Sistema Solar. As crateras de impacto são formadas por um impacto de um corpo menor (meteorito) em alta velocidade. A Lua está repleta de crateras de impacto devido à sua falta de atmosfera. A atmosfera espessa da Terra impede que muitos meteoritos cheguem ao solo. Um exemplo de cratera de impacto na Terra é a Cratera do Meteoro no Arizona, EUA.

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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".

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The asteroid Ceres, roughly spherical with a grey surface, many craters, some of which reveal white subsurface water ice.

Ceres

Caption: True-colour image of the asteroid Ceres acquired by the spaceprobe Dawn in May 2015, at a distance of 13641 km. The prominent, bright crater at right is Haulani. The smaller bright spot to its left is exposed on the floor of Oxo. Ejecta from these impacts appears to have exposed bright material, probably water ice.
Credit: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA / Justin Cowart

License: CC-BY-2.0 Creative Commons Attribution 2.0 Generic icons