This chapter has a brief overview of astronomical topics that we will
... nothing before (as there was no time) and it was not an explosion in space (since space was created here). Why do we believe this? We see the galaxies flying apart from each other, the farthest moving faster. Since we see the more distant galaxies as they were long ago, this seems to imply an explos ...
... nothing before (as there was no time) and it was not an explosion in space (since space was created here). Why do we believe this? We see the galaxies flying apart from each other, the farthest moving faster. Since we see the more distant galaxies as they were long ago, this seems to imply an explos ...
Week 2 (9/27) – Opinion Poll I am taking this class because:
... C. Most of the matter in the Universe is non-luminous and is referred to as Dark Matter D. The nearest star to the Sun is about 4 light years away E. For many stars in our galaxy, astronomers have measured the “wobble” induced by the gravity of the orbiting planet ...
... C. Most of the matter in the Universe is non-luminous and is referred to as Dark Matter D. The nearest star to the Sun is about 4 light years away E. For many stars in our galaxy, astronomers have measured the “wobble” induced by the gravity of the orbiting planet ...
Does Dark Energy Really Exist? Or does Earth occupy a very
... of the universe rather than holding it back. This substance became known as dark energy. It is now over a decade later, and the existence of dark energy is still so puzzling that some cosmologists are revisiting the fundamental postulates that led them to deduce its existence in the first place. One ...
... of the universe rather than holding it back. This substance became known as dark energy. It is now over a decade later, and the existence of dark energy is still so puzzling that some cosmologists are revisiting the fundamental postulates that led them to deduce its existence in the first place. One ...
Our Incredible Universe
... forces that created the universe. These forces actually created space and time along with all that we see around us today. During a tiny fraction of the first second, the universe went through a short period of rapidly accelerating faster-than-light expansion called “inflation.” This initial expansi ...
... forces that created the universe. These forces actually created space and time along with all that we see around us today. During a tiny fraction of the first second, the universe went through a short period of rapidly accelerating faster-than-light expansion called “inflation.” This initial expansi ...
AY5 Homework for Quiz 4: Spring 2015
... 4) Horizon problem. The uniformity of the cosmic microwave background is very high despite the fact that parts of the sky separated by large angles would not have been in causal contact ever. With in ...
... 4) Horizon problem. The uniformity of the cosmic microwave background is very high despite the fact that parts of the sky separated by large angles would not have been in causal contact ever. With in ...
PowerPoint Presentation - E/PO at LHEA
... * Generally have small apertures, typically 3 to 5 inches * Less suited for viewing small and faint deep sky objects such as distant galaxies and nebulae * Heavier, longer and bulkier than equivalent aperture reflectors and catadioptrics ...
... * Generally have small apertures, typically 3 to 5 inches * Less suited for viewing small and faint deep sky objects such as distant galaxies and nebulae * Heavier, longer and bulkier than equivalent aperture reflectors and catadioptrics ...
ppt of lecture - July Lectures
... (3) Very uniform on large scales, but seeds of galaxy formation ...
... (3) Very uniform on large scales, but seeds of galaxy formation ...
The Universe and Big Bang Theory Review Sheet
... The Universe and Big Bang Theory Review Sheet 1. What is background radiation? -If there was a Big Bang theory, energy that was created during the explosions, should still be seen in all parts of the universe. 2. What evidence is found to support the big bang theory? -Evidence is found in the form ...
... The Universe and Big Bang Theory Review Sheet 1. What is background radiation? -If there was a Big Bang theory, energy that was created during the explosions, should still be seen in all parts of the universe. 2. What evidence is found to support the big bang theory? -Evidence is found in the form ...
Stars, Galaxies, and the Universe
... • A white dwarf is is a star that has used up all of its hydrogen and is the leftover center of an older star. • Class F stars are yellow-white • The majority of stars in our galaxy are main sequence stars. ...
... • A white dwarf is is a star that has used up all of its hydrogen and is the leftover center of an older star. • Class F stars are yellow-white • The majority of stars in our galaxy are main sequence stars. ...
E.S. 14: The Universe Universe Formation: The Big Bang Theory
... i. This is also known as a star’s luminosity. ii. Stars generate energy and emit light through nuclear fusion. iii. Nuclear fusion is when two hydrogen atoms fuse to form a single helium atom and give off a large amount of energy. C. Apparent magnitude is the amount of light received on Earth from a ...
... i. This is also known as a star’s luminosity. ii. Stars generate energy and emit light through nuclear fusion. iii. Nuclear fusion is when two hydrogen atoms fuse to form a single helium atom and give off a large amount of energy. C. Apparent magnitude is the amount of light received on Earth from a ...
Dec. 6 - UF Physics
... Origins of the Big Bang Theory • George Gamow (1948) suggested that if the universe was created with a “hot Big Bang”, then: – Various elements, such as H and He, would be produced for a few minutes immediately after the Big Bang due to the extremely high temperatures and density of the universe at ...
... Origins of the Big Bang Theory • George Gamow (1948) suggested that if the universe was created with a “hot Big Bang”, then: – Various elements, such as H and He, would be produced for a few minutes immediately after the Big Bang due to the extremely high temperatures and density of the universe at ...
Document
... • Also measure the (temperature) intensity and wavelength in various directions. • Look for fluctuations out of which galaxies came. ...
... • Also measure the (temperature) intensity and wavelength in various directions. • Look for fluctuations out of which galaxies came. ...
Big Bang
... 2) Redshift proportional to distance → Homogeneous & isotropic expansion. 3) Cosmic Microwave Background → Universe was hot & dense enough to be opaque. ...
... 2) Redshift proportional to distance → Homogeneous & isotropic expansion. 3) Cosmic Microwave Background → Universe was hot & dense enough to be opaque. ...
What Is Man's Place In The Universe?
... The Sun sits at one of the focal points of each planet’s elliptical orbit. I know this because I stole Tycho Brahe’s data and there’s simply less error in the calculations if you assume elliptical orbits. ...
... The Sun sits at one of the focal points of each planet’s elliptical orbit. I know this because I stole Tycho Brahe’s data and there’s simply less error in the calculations if you assume elliptical orbits. ...
Exam 4 Study Guide
... This guide is meant to assist with studying for Exam 4 on April 17. However, it is not comprehensive. This guide includes topics which might not be on this exam (but which might be on the final). It is also possible that something not specifically mentioned on the guide may be on the exam. Howeve ...
... This guide is meant to assist with studying for Exam 4 on April 17. However, it is not comprehensive. This guide includes topics which might not be on this exam (but which might be on the final). It is also possible that something not specifically mentioned on the guide may be on the exam. Howeve ...
Astronomy and Cosmology Exam Review
... 2) What does the red shift tell us about the motion of the universe? It is expanding 3) What is currently the most accepted theory about the origin of the universe called? Big Bang 4) What can I tell about a star based on its color? What elements are present 5) What is the most common unit for measu ...
... 2) What does the red shift tell us about the motion of the universe? It is expanding 3) What is currently the most accepted theory about the origin of the universe called? Big Bang 4) What can I tell about a star based on its color? What elements are present 5) What is the most common unit for measu ...
8.8A describe components of the universe, including stars, nebulae
... 8.8C explore how different wavelengths of the electromagnetic spectrum such as light and radio waves are used to gain information about distances and properties of the universe. ...
... 8.8C explore how different wavelengths of the electromagnetic spectrum such as light and radio waves are used to gain information about distances and properties of the universe. ...
Origin of Elements - Madison Public Schools
... Our galaxy, the Milky Way, contains ~200 billion stars. Outside the Milky Way are billions more galaxies. There is evidence that the universe is expanding, so galaxies are moving farther away from each other. Thermal energy remains constant, so the universe is also cooling down. There is a large bod ...
... Our galaxy, the Milky Way, contains ~200 billion stars. Outside the Milky Way are billions more galaxies. There is evidence that the universe is expanding, so galaxies are moving farther away from each other. Thermal energy remains constant, so the universe is also cooling down. There is a large bod ...
origins powerpoint
... • Remember Einstein’s famous equation? • E=MC2 • Energy (E) can be converted into matter (M) • All of the matter in the universe now was once a tremendous amount of energy! ...
... • Remember Einstein’s famous equation? • E=MC2 • Energy (E) can be converted into matter (M) • All of the matter in the universe now was once a tremendous amount of energy! ...
Big Bang
The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. The model accounts for the fact that the universe expanded from a very high density and high temperature state, and offers a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background, large scale structure, and Hubble's Law. If the known laws of physics are extrapolated beyond where they are valid, there is a singularity. Modern measurements place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe. After the initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.Since Georges Lemaître first noted, in 1927, that an expanding universe might be traced back in time to an originating single point, scientists have built on his idea of cosmic expansion. While the scientific community was once divided between supporters of two different expanding universe theories, the Big Bang and the Steady State theory, accumulated empirical evidence provides strong support for the former. In 1929, from analysis of galactic redshifts, Edwin Hubble concluded that galaxies are drifting apart, important observational evidence consistent with the hypothesis of an expanding universe. In 1965, the cosmic microwave background radiation was discovered, which was crucial evidence in favor of the Big Bang model, since that theory predicted the existence of background radiation throughout the universe before it was discovered. More recently, measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to dark energy's existence. The known physical laws of nature can be used to calculate the characteristics of the universe in detail back in time to an initial state of extreme density and temperature.