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Prof. Elba M. Sepúlveda
Mentor: Brian B. Nord
Dark Energy Survey
During my first two weeks I developed a series of documents with lots of questions about:
Dark energy, dark matter, origin of the universe, galaxies, galaxy clusters, surveys, gravitational lensing, probes and cosmology and life at CTIO
For TRAC Program
Teacher Research Associates
To have this information
You can link here:
The Big Picture
I started thinking about concepts related to Dark Energy
How to connect with education?
How apply what we are learning to our classroom?
How to use this information to help students learn about cosmology?
How to improve 21st century education?
Research and discussion about students ideas of cosmology.
What is the Big Bang?
They think only stars are moving away.
They draw the expansion like an atom.
They say the expansion makes an increase of temperature.
Learn About Students' Misconception
Develop new ideas to help in the understanding of the expansion of the universe.
Independent study of topics.
Develop a way to demonstrate some of the topics.
Concepts or layers
Read and discuss educational sources
Expansion of the Universe
Develop analogies and demo & lab
Develop the Expanding Universe lab activity.
This activity demonstrate two models of the expansion of the universe in two dimension and time.
The purpose of it is to explain the expansion of the universe in a two dimensional model and to calculate the expansion coefficient.
The Balloon Universe
Analysis of the Hubble Constant
Rubber Band Universe
They will be used for:
Calculation of the Hubble Time
Hubble (1929) real data
For future development
Weight in space
Fate of the universe
Origin vs present
Present vs future
Type of universes
Cluster of Galaxies
Zero point energy
Inflation vs steady state
Types of Dark Energy
The problem of the cosmological constant is:
The cosmological constant is 120 orders of magnitude smaller than naively expected from quantum gravity.
Using the following equation:
Einstein attempted to apply his
new theory about the whole
He thought the universe was static.
Leads to consider Hubble discovery.
space-time <=> matter
energy density is related to Hubble constant
You determine the fate of the Universe by setting the value of Omega omega and deciding whether or not to include the Cosmological Constant.
Omega omega is the ratio of inward pull to outward push in the Universe.
Developing the idea of an expansion
Cosmological constant problem
Transformation of energy
Concepts that we can develop in our classroom
Origin of the universe
Composition of the universe
Teacher point of view
Make mistakes and find the solution
From the simple to the complex
Do not just copy equations
Teacher <--> Student
Learn about real errors
Depth and Global
Use a media source
Support from institutions