Glossary term: Energia escura
Description: A energia escura é uma causa proposta para a expansão acelerada do Universo, que vem ocorrendo nos últimos seis bilhões de anos em grandes escalas. A energia escura é frequentemente descrita como apresentando uma “força” oposta à gravidade. Os efeitos da energia escura são inferidos por meio de observações e medições indiretas de supernovas do tipo Ia, radiação cósmica de fundo em micro-ondas (CMB), aglomerados de galáxias, lentes gravitacionais e oscilações acústicas bariônicas, que parecem indicar que a energia escura representa pouco mais de 70% da composição do Universo. Apesar disso, há muita pesquisa e debate sobre a natureza da energia escura, se existem diferentes tipos de energia escura, se a energia escura muda ao longo do tempo cósmico e alternativas à energia escura.
Related Terms:
- Radiação Cósmica de Fundo em Micro-ondas (CMB)
- Dark Matter
- Aglomerado de galáxias
- Gravitational Lens
- Supernova
- Vela padrão
See this term in other languages
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".
If you notice a factual or translation error in this glossary term or definition then please get in touch.
In Other Languages
- Árabe: الطاقة المظلمة
- Alemão: Dunkle Energie
- Inglês: Dark Energy
- Espanhol: Energía oscura
- Francês: Énergie noire
- Italiano: Energia oscura
- Japonês: ダークエネルギー (external link)
- Chinês Simplificado: 暗能量
- Chinês Tradicional: 暗能量
Related Activities
Dark matter & dark energy (Part 2) – Understanding the nature of dark matter and dark energy
astroEDU educational activity (links to astroEDU website) Description: Let's investigate the nature of dark matter and energy with gravitational lensing!
License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons
Tags:
Experiment
, Invisible
Age Ranges:
12-14
, 14-16
, 16-19
, 19+
Education Level:
Informal
, Middle School
Areas of Learning:
Guided-discovery learning
, Interactive Lecture
, Modelling
, Problem-solving
Costs:
Medium Cost
Duration:
45 mins
Group Size:
Group
Skills:
Constructing explanations
, Developing and using models
, Engaging in argument from evidence
Dark matter and Dark energy (Part 1) – Discovering the main components of the Universe
astroEDU educational activity (links to astroEDU website) Description: Lets' investigate gravity, dark matter and dark energy with some very simple experiments!
License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons
Tags:
Experiment
, Galaxies
Age Ranges:
12-14
, 14-16
, 16-19
, 19+
Education Level:
Informal
, Middle School
Areas of Learning:
Guided-discovery learning
, Interactive Lecture
, Modelling
, Observation based
, Other
, Problem-solving
Costs:
Low Cost
Duration:
45 mins
Group Size:
Group
Skills:
Constructing explanations
, Developing and using models
, Engaging in argument from evidence
, Planning and carrying out investigations





