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What is meant by "after glow" of the big bang
Cosmic Microwave Background radiation
This is the estimated percentage of dark energy in the universe.
68%
Who is Edwin Hubble?
This astronomer provided evidence for the expanding universe.
What is measuring the rate of expansion of the universe?
This method is used to determine the age of the universe.
What is approximately 13.8 billion years old?
The universe
What does Lambda CDM abbreviation MEAN
Lambda cold dark matter
How much percent does dark energy take up ?
70%
5x
What is analyzing the composition of celestial objects?
this is the role of spectroscopy in astronomy.
These two elements make up 98% of most celestial bodies.
Hydrogen and Helium
Tell me the definition of red shift in your own words
When we look at distant galaxies, we see that their light is stretched to the red end of the spectrum, meaning they are moving away from us. This shows the universe is expanding.
What is influencing galaxy rotation curves and the behavior of galaxy clusters?
his is the role of dark matter in the formation and stability of galaxies.
What is spectroscopy
Spectroscopy is the analysis of light emitted from CBs
What is the expansion of the universe is accelerating?
This is the primary evidence for the existence of dark energy.
This element is the most abundant in the universe.
Hydrogen
Cosmic Microwave Background (CMB):
This is faint heat leftover from the Big Bang, spread throughout the universe.
Oscialliting Universe Theory
This theory suggests that our universe is the newest universe in a long line of universes
big freeze vs big brunch
In this CD theory, matter (and energy) will spread and dissipate as the universe expands. Entropy hits a maximum
In this CD theory, gravity overcomes the universe’s expansion
This is the role of dark matter in the formation and stability of galaxies.
What is influencing galaxy rotation curves and the behavior of galaxy clusters?
This hypothetical form of energy is thought to cause the accelerated expansionof the universe.
Dark Energy
The Multiverse Theory
It’s possible that cosmic energy came together and began to “boil”
Steady State Theorem
This theory suggests that the universe is endless and infinite, meaning it has existed forever and will expand forever
The universe is held together by 4 major forces
Strong Force
Weak Force
Electromagnetic force
Gravitational Force
This term in astronomy means the change in wavelength of light towards the red end of the spectrum
Red shift
What is it will collapse back into a singularity?
The Big Crunch