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Glossary term: Univers

Description: L'espace, le temps, la matière, l'énergie, les objets, les phénomènes et les lois qui régissent les mécanismes fondamentaux sous-jacents sont contenus dans l'Univers. L'Univers est souvent appelé cosmos, étant donné que tous les différents aspects de l'Univers sont réunis dans un système "ordonné", bien qu'il y ait de subtiles différences techniques entre les deux termes. Univers est dérivé du latin universus. Les scientifiques font souvent référence à l'Univers observable, pour souligner les limites de ce qui peut être observé et mesuré.

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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


The Hubble Ultra Deep Field showing around 10,000 galaxies of various ages, sizes, shapes and colours.

Hubble Ultra Deep Field

Caption: This awe-inspiring image referred to as the Hubble Ultra-Deep Field (HUDF), was obtained using the Hubble Space Telescope (HST), by combining 800 exposures from 400 orbits of the HST, which equates to 11.3 days of total exposure time. The image shows nearly 10,000 galaxies and was taken in the direction of a patch of sky with the least amount of stars from the Milky Way galaxy in the field of view. The region of sky that the HST observed corresponds to 1/10 the angular size of the Full Moon, which is roughly equal to approximately a 1 millimeter-sized object placed 1 meter away. Every object in the image, except for the bright points with the crosshairs, are galaxies. As a consequence of the speed of light being a constant in a vacuum, the more distant an object, the further back in time we are observing. Therefore, the light from some of the galaxies in the HUDF image is from when the Universe as only a few hundred million years old. The HUDF image takes us through on a journey through space, and also in time.
Credit: NASA, ESA, and S. Beckwith (STScI) and the HUDF Team credit link

License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons

Related Activities


History of the Universe

History of the Universe

astroEDU educational activity (links to astroEDU website)
Description: Build a timeline of the all Universe!

License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons

Tags: History , Timeline , Mathematics , Humans
Age Ranges: 8-10 , 10-12 , 12-14
Education Level: Middle School , Primary
Areas of Learning: Problem-solving , Social Research
Costs: Low Cost
Duration: 1 hour 30 mins
Group Size: Group
Skills: Asking questions , Communicating information , Developing and using models , Using mathematics and computational thinking

Dark matter & dark energy (Part 2) – Understanding the nature of dark matter and dark energy

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

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