Welcome to DESI High!
[Introductory text to write]
Summary
- Origins of DESI: The Mystery of Dark Energy
- Introduction to DESI
- Meet the principal
- How does this works?
Origins of DESI: The Mystery of Dark Energy
Our universe is expanding. Astronomical observations tell us that the space between galaxies is getting larger over time, while the galaxies themselves stay the same size. This expansion is well understood and is explained by Albert Einstein’s theory of General Relativity. When the universe started with the Big Bang, it was small, hot, and dense, and it has since expanded up until the present day.
The above illustration shows a timeline of the universe's expansion and the changes in its physical conditions at various points in its history (Credit: NASA).
One surprising observation is that the universe’s expansion is getting faster. When this accelerating expansion was first discovered in the years 1998 and 1999, we didn’t know what was causing it. In fact, we still know very little about the physical cause of the accelerating expansion, which we attribute to a mysterious form of energy called dark energy. Studying and learning more about dark energy is one of the greatest undertakings in modern physics.
🤓☝️ Learn more about dark energy in our Dark Energy notebook!
Introduction to DESI
One way that we can study dark energy is by making a giant, three-dimensional map of the universe. The universe’s expansion history is encoded in the positions of galaxies. By mapping the distances to millions of galaxies far away from our own, we can learn titlemore about how dark energy has affected the universe’s expansion over time.
The above illustration shows a cross-section of the 3D map created by the DESI collaboration, with each speck of light being one of millions of galaxies that DESI observes
(Credit: Claire Lamman and the DESI Collaboration).
🤓☝️ Learn more about how we map the universe in our Observations and Distances notebooks !
The Dark Energy Spectroscopic Instrument (DESI) is a cosmological survey that aims to map the large-scale structure of the universe and understand the nature of dark energy. It will measure the spectra of millions of galaxies and quasars, that the DESI scientists will analyse to constrain the cosmological models that describe the evolution of the universe.
DESI is a collaboration of scientists and engineers from around the world, working together to build and operate a state-of-the-art spectrograph at the Mayall Telescope in Arizona.
Le Dark Energy Spectroscopic Instrument (DESI) est un projet cherche à cartographier la structure à grande échelle de l’univers et à comprendre la nature de l’énergie noire. Il mesurera les spectres de millions de galaxies et de quasars, que les scientifiques de DESI analyseront pour contraindre les modèles cosmologiques qui décrivent l’évolution de l’univers.
DESI est une collaboration de scientifiques et d’ingénieurs du monde entier, travaillant ensemble pour construire et exploiter un spectrographe de pointe au télescope Mayall en Arizona.
The Dark Energy Spectroscopic Instrument (DESI) is a cosmological survey that aims to map the large-scale structure of the universe and understand the nature of dark energy. It will measure the spectra of millions of galaxies and quasars, that the DESI scientists will analyse to constrain the cosmological models that describe the evolution of the universe.
DESI is a collaboration of scientists and engineers from around the world, working together to build and operate a state-of-the-art spectrograph at the Mayall Telescope in Arizona.
Meet the principal
The existence of dark energy was irrefutably confirmed by Lawrence Berkeley Lab’s very own Saul Perlmutter, Brian Schmidt and Adam Reiss in 1998, when they discovered that the universe’s expansion was accelerating. They were awarded the Nobel Prize in Physics in 2011 for their work.
As honorary principal at DESI High, Saul has a special opening address to all the students, including you!
🤓☝️ Take a hands-on look at Saul’s experiment in our Dark Energy notebook!
How does this works?
To start with DESI High, pick a curriculum that interests you. The notebooks will open in Binder in a new tab. Learn more about the courses, notebooks and how to use them by clicking on the button below. Then, pick a notebook and start exploring the universe!
If you follow this course with a teacher or a DESI High mentor, follow their instructions on how to proceed. Do not hesitate to ask questions and seek help when needed!
🤓☝️ If you do not know Python, the Code 101 curriculum is a great place to start. It will teach you the basics of Python programming, which is the language we use to analyze data from DESI.
[Texte d’introduction à écrire]
Sommaire
- Origines de DESI : Le mystère de l’énergie noire
- Introduction à DESI
- Rencontrez le principal
- Comment ça marche ?
Origines de DESI : Le mystère de l’énergie noire
Notre univers est en expansion. Les observations astronomiques nous indiquent que l’espace entre les galaxies s’agrandit avec le temps, tandis que les galaxies elles-mêmes restent de la même taille. Cette expansion est bien comprise et est expliquée par la théorie de la relativité générale d’Albert Einstein. Lorsque l’univers a commencé avec le Big Bang, il était petit, chaud et dense, et il s’est depuis étendu jusqu’à nos jours.
L'illustration ci-dessus montre une chronologie de l'expansion de l'univers et des changements dans ses conditions physiques à différents moments de son histoire (Crédit : NASA).
La surprise vient du fait que l’expansion de l’univers s’accélère. Lorsque cette expansion accélérée a été découverte pour la première fois en 1998 et 1999, sa cause était inconnue. En fait, on en sait encore très peu sur la cause physique de cette accélération, attribuée à une forme mystérieuse d’énergie appelée “énergie noire”. Comprendre l’énergie noire est l’un des plus grands défis de la physique moderne.
🤓☝️ Apprenez-en plus sur l’énergie noire dans notre notebook sur l’énergie noire !
Introduction à DESI
Une manière d’étudier l’énergie noire est de créer une immense carte en trois dimensions de l’univers. L’histoire de l’expansion de l’univers est encodée dans les positions des galaxies. En cartographiant les distances de millions de galaxies éloignées, nous pouvons en apprendre davantage sur la façon dont l’énergie noire a affecté l’expansion de l’univers au fil du temps.
L'illustration ci-dessus montre une coupe transversale de la carte 3D créée par la collaboration DESI, chaque point lumineux représentant l'une des millions de galaxies observées par DESI
(Crédit : Claire Lamman et la collaboration DESI).
🤓☝️ Apprenez-en plus sur le relevé DESI dans notre notebook sur le relevé DESI !
The Dark Energy Spectroscopic Instrument (DESI) is a cosmological survey that aims to map the large-scale structure of the universe and understand the nature of dark energy. It will measure the spectra of millions of galaxies and quasars, that the DESI scientists will analyse to constrain the cosmological models that describe the evolution of the universe.
DESI is a collaboration of scientists and engineers from around the world, working together to build and operate a state-of-the-art spectrograph at the Mayall Telescope in Arizona.
Le Dark Energy Spectroscopic Instrument (DESI) est un projet cherche à cartographier la structure à grande échelle de l’univers et à comprendre la nature de l’énergie noire. Il mesurera les spectres de millions de galaxies et de quasars, que les scientifiques de DESI analyseront pour contraindre les modèles cosmologiques qui décrivent l’évolution de l’univers.
DESI est une collaboration de scientifiques et d’ingénieurs du monde entier, travaillant ensemble pour construire et exploiter un spectrographe de pointe au télescope Mayall en Arizona.
The Dark Energy Spectroscopic Instrument (DESI) is a cosmological survey that aims to map the large-scale structure of the universe and understand the nature of dark energy. It will measure the spectra of millions of galaxies and quasars, that the DESI scientists will analyse to constrain the cosmological models that describe the evolution of the universe.
DESI is a collaboration of scientists and engineers from around the world, working together to build and operate a state-of-the-art spectrograph at the Mayall Telescope in Arizona.
Rencontrez le principal
L’existence de l’énergie noire a été confirmée de manière irréfutable par Saul Perlmutter, Brian Schmidt et Adam Reiss du Lawrence Berkeley Lab en 1998, lorsqu’ils ont découvert que l’expansion de l’univers s’accélérait. Ils ont reçu le Prix Nobel de Physique en 2011 pour leur travail.
En tant que principal honoraire de DESI High, Saul a un discours d’ouverture spécial pour tous les étudiants, y compris vous !
🤓☝️ Découvrez l’expérience de Saul dans notre notebook sur l’énergie noire !
Comment ça marche ?
Pour commencer avec DESI High, choisissez un curriculum qui vous intéresse. Les notebooks s’ouvriront dans Binder dans un nouvel onglet. Apprenez-en plus sur les cours, les notebooks et comment les utiliser en cliquant sur le bouton ci-dessous. Ensuite, choisissez un notebook et commencez à explorer l’univers !
Si vous suivez ce cours avec un enseignant ou un mentor de DESI High, suivez leurs instructions sur la façon de procéder. N’hésitez pas à poser des questions et à demander de l’aide si nécessaire !
🤓☝️ Si vous ne connaissez pas Python, le cours Code 101 est un bon endroit pour commencer. Il vous apprendra les bases de programmation en Python, qui est le language utilisé pour analyser les données de DESI.
[Introductory text to write]
Summary
- Origins of DESI: The Mystery of Dark Energy
- Introduction to DESI
- Meet the principal
- How does this works?
Origins of DESI: The Mystery of Dark Energy
Our universe is expanding. Astronomical observations tell us that the space between galaxies is getting larger over time, while the galaxies themselves stay the same size. This expansion is well understood and is explained by Albert Einstein’s theory of General Relativity. When the universe started with the Big Bang, it was small, hot, and dense, and it has since expanded up until the present day.
The above illustration shows a timeline of the universe's expansion and the changes in its physical conditions at various points in its history (Credit: NASA).
One surprising observation is that the universe’s expansion is getting faster. When this accelerating expansion was first discovered in the years 1998 and 1999, we didn’t know what was causing it. In fact, we still know very little about the physical cause of the accelerating expansion, which we attribute to a mysterious form of energy called dark energy. Studying and learning more about dark energy is one of the greatest undertakings in modern physics.
🤓☝️ Learn more about dark energy in our Dark Energy notebook!
Introduction to DESI
One way that we can study dark energy is by making a giant, three-dimensional map of the universe. The universe’s expansion history is encoded in the positions of galaxies. By mapping the distances to millions of galaxies far away from our own, we can learn titlemore about how dark energy has affected the universe’s expansion over time.
The above illustration shows a cross-section of the 3D map created by the DESI collaboration, with each speck of light being one of millions of galaxies that DESI observes
(Credit: Claire Lamman and the DESI Collaboration).
🤓☝️ Learn more about how we map the universe in our Observations and Distances notebooks !
The Dark Energy Spectroscopic Instrument (DESI) is a cosmological survey that aims to map the large-scale structure of the universe and understand the nature of dark energy. It will measure the spectra of millions of galaxies and quasars, that the DESI scientists will analyse to constrain the cosmological models that describe the evolution of the universe.
DESI is a collaboration of scientists and engineers from around the world, working together to build and operate a state-of-the-art spectrograph at the Mayall Telescope in Arizona.
Le Dark Energy Spectroscopic Instrument (DESI) est un projet cherche à cartographier la structure à grande échelle de l’univers et à comprendre la nature de l’énergie noire. Il mesurera les spectres de millions de galaxies et de quasars, que les scientifiques de DESI analyseront pour contraindre les modèles cosmologiques qui décrivent l’évolution de l’univers.
DESI est une collaboration de scientifiques et d’ingénieurs du monde entier, travaillant ensemble pour construire et exploiter un spectrographe de pointe au télescope Mayall en Arizona.
The Dark Energy Spectroscopic Instrument (DESI) is a cosmological survey that aims to map the large-scale structure of the universe and understand the nature of dark energy. It will measure the spectra of millions of galaxies and quasars, that the DESI scientists will analyse to constrain the cosmological models that describe the evolution of the universe.
DESI is a collaboration of scientists and engineers from around the world, working together to build and operate a state-of-the-art spectrograph at the Mayall Telescope in Arizona.
Meet the principal
The existence of dark energy was irrefutably confirmed by Lawrence Berkeley Lab’s very own Saul Perlmutter, Brian Schmidt and Adam Reiss in 1998, when they discovered that the universe’s expansion was accelerating. They were awarded the Nobel Prize in Physics in 2011 for their work.
As honorary principal at DESI High, Saul has a special opening address to all the students, including you!
🤓☝️ Take a hands-on look at Saul’s experiment in our Dark Energy notebook!
How does this works?
To start with DESI High, pick a curriculum that interests you. The notebooks will open in Binder in a new tab. Learn more about the courses, notebooks and how to use them by clicking on the button below. Then, pick a notebook and start exploring the universe!
If you follow this course with a teacher or a DESI High mentor, follow their instructions on how to proceed. Do not hesitate to ask questions and seek help when needed!
🤓☝️ If you do not know Python, the Code 101 curriculum is a great place to start. It will teach you the basics of Python programming, which is the language we use to analyze data from DESI.
If you get stuck with python, join the pros and try Google or Stack Overflow! Most of the time, you will find the answer to your question there.
If you have a science question, leave us a message on the forum and we’ll get back to you.
Si vous êtes bloqué avec Python, faites comme les pros: demandez à Google ou à Stack Overflow ! La plupart du temps, vous trouverez la réponse à votre question là-bas.
Si vous avez une question scientifique, laissez-nous un message sur le forum et nous vous répondrons dès que possible.
If you get stuck with python, join the pros and try Google or Stack Overflow! Most of the time, you will find the answer to your question there.
If you have a science question, leave us a message on the forum and we’ll get back to you.