100 Greatest Discoveries in Science
... an unknown source at the center of the Milky Way by its position in the sky. What did Karl Jansky’s static observations end up showing at the middle of the Milky Way galaxy? A black hole How were Jansky’s observations the start of a new kind of astronomy? He was the first to use radio waves (which c ...
... an unknown source at the center of the Milky Way by its position in the sky. What did Karl Jansky’s static observations end up showing at the middle of the Milky Way galaxy? A black hole How were Jansky’s observations the start of a new kind of astronomy? He was the first to use radio waves (which c ...
U7 Review WS KEY
... c. galactic clusters b. cosmic background radiation d. abundance of light elements (H, He and Li) The first elements that were formed in the universe were? a. hydrogen and lithium c. hydrogen and helium b. lithium and helium d. lithium and beryllium 10. I can describe tools and models used by scie ...
... c. galactic clusters b. cosmic background radiation d. abundance of light elements (H, He and Li) The first elements that were formed in the universe were? a. hydrogen and lithium c. hydrogen and helium b. lithium and helium d. lithium and beryllium 10. I can describe tools and models used by scie ...
Lecture 2
... Finally we look at the application of these ideas on the largest scales of all. If we consider only the forces which we know about from laboratory physics it seems clear that gravity must dominate on very large scales and therefore that the universe should be in a state of collapse. We can try to ar ...
... Finally we look at the application of these ideas on the largest scales of all. If we consider only the forces which we know about from laboratory physics it seems clear that gravity must dominate on very large scales and therefore that the universe should be in a state of collapse. We can try to ar ...
Astronomy Quiz #1 Answers
... 8. Some galaxies are thought to produce many more new stars than others. What characteristics do galaxies with a high rate of production of stars have in common? (2 – MC) -they have large amounts of dust and gas 9. Explain why looking at a star in the night sky is like looking back in time. (2 – COM ...
... 8. Some galaxies are thought to produce many more new stars than others. What characteristics do galaxies with a high rate of production of stars have in common? (2 – MC) -they have large amounts of dust and gas 9. Explain why looking at a star in the night sky is like looking back in time. (2 – COM ...
Astro-2: History of the Universe
... like fog However, if light is absorbed it will also re-radiate, producing light albeit at different wavelengths, so this doesn’t work! ...
... like fog However, if light is absorbed it will also re-radiate, producing light albeit at different wavelengths, so this doesn’t work! ...
Lecture6
... like fog However, if light is absorbed it will also re-radiate, producing light albeit at different wavelengths, so this doesn’t work! ...
... like fog However, if light is absorbed it will also re-radiate, producing light albeit at different wavelengths, so this doesn’t work! ...
1 - TeacherWeb
... 45. The stars used by navigators because it maintains its position above the north pole is called: 46. What type of star is Polaris, the “north star”? ...
... 45. The stars used by navigators because it maintains its position above the north pole is called: 46. What type of star is Polaris, the “north star”? ...
Chapter 2 Basic Chemistry
... Our galaxy is a spiral galaxy, with arms consisting of billions of stars, orbiting, encircling, and winding outward. These arms have names – we are in the Orion Arm ...
... Our galaxy is a spiral galaxy, with arms consisting of billions of stars, orbiting, encircling, and winding outward. These arms have names – we are in the Orion Arm ...
Bruemmer-Dark Matter
... Weakly Interacting Massive Particles Particle falling out of thermal equilibrium with the hot plasma of early universe ...
... Weakly Interacting Massive Particles Particle falling out of thermal equilibrium with the hot plasma of early universe ...
Lecture 1 Review Sheet
... How many years after the Big Bang began did the Universe become visible? How many millions of years after the Big Bang before the first stars ignited? Review Questions: Explain the significance of the cosmic microwave background radiation. What wavelength did it start out as? What does it record? Ex ...
... How many years after the Big Bang began did the Universe become visible? How many millions of years after the Big Bang before the first stars ignited? Review Questions: Explain the significance of the cosmic microwave background radiation. What wavelength did it start out as? What does it record? Ex ...
The New Cosmology: Our Expanding Universe
... recede. Understanding this logic, it did not take much thinking to figure out that if the universe is expanding, it must at some point have been denser; galaxies must have been closer together than they are now. THE UNIVERSE IS EXPANDING FROM A SINGULARITY IN AN “INFLATIONARY HOT BIG BANG EVENT” The ...
... recede. Understanding this logic, it did not take much thinking to figure out that if the universe is expanding, it must at some point have been denser; galaxies must have been closer together than they are now. THE UNIVERSE IS EXPANDING FROM A SINGULARITY IN AN “INFLATIONARY HOT BIG BANG EVENT” The ...
The New Cosmology: Our Expanding Universe
... recede. Understanding this logic, it did not take much thinking to figure out that if the universe is expanding, it must at some point have been denser; galaxies must have been closer together than they are now. THE UNIVERSE IS EXPANDING FROM A SINGULARITY IN AN “INFLATIONARY HOT BIG BANG EVENT” The ...
... recede. Understanding this logic, it did not take much thinking to figure out that if the universe is expanding, it must at some point have been denser; galaxies must have been closer together than they are now. THE UNIVERSE IS EXPANDING FROM A SINGULARITY IN AN “INFLATIONARY HOT BIG BANG EVENT” The ...
Higher Hubble`s Law and the Big Bang Answers
... We are certain the universe had a beginning. Presence of cosmic microwave background radiation. Doppler Effect The abundance of light elements such as Hydrogen and Helium. ...
... We are certain the universe had a beginning. Presence of cosmic microwave background radiation. Doppler Effect The abundance of light elements such as Hydrogen and Helium. ...
ExpandUniv
... The Hubble Constant and the Age of the Universe If you plot the scale of the Universe vs time, the Hubble constant is the slope of the line now. If it’s really constant, then the age of the Universe is just 1/H [since H=v/D=(d/t)/d]. That’s because if you know how fast we are expanding, you can run ...
... The Hubble Constant and the Age of the Universe If you plot the scale of the Universe vs time, the Hubble constant is the slope of the line now. If it’s really constant, then the age of the Universe is just 1/H [since H=v/D=(d/t)/d]. That’s because if you know how fast we are expanding, you can run ...
Chapter105.ppt
... • Planets are made from planetesimals; originally the rings of gas and dusk surrounding a protostar. The Moon formed when another celestial body collided with the Earth to create a massive cloud of dust and debris that coalesced to form the Moon. ...
... • Planets are made from planetesimals; originally the rings of gas and dusk surrounding a protostar. The Moon formed when another celestial body collided with the Earth to create a massive cloud of dust and debris that coalesced to form the Moon. ...
AS 60 - Astronomy of the Americas
... d. The temperature of the energy radiated by the Earth back into space e. The temperature left in a microwave oven after Orville Redenbacher popcorn ceases to pop 9. How well does the observed background radiation agree with theoretical predictions? a. The observed background radiation temperature a ...
... d. The temperature of the energy radiated by the Earth back into space e. The temperature left in a microwave oven after Orville Redenbacher popcorn ceases to pop 9. How well does the observed background radiation agree with theoretical predictions? a. The observed background radiation temperature a ...
Unit 1
... the same in all places and at all times past, present, and future (basically nothing is moving or changing ...
... the same in all places and at all times past, present, and future (basically nothing is moving or changing ...
The Evolution of the Solar System
... • As the matter cools down, they formed many galaxies and stars. About 4.5 billion years ago our star, the Sun, was born. This was the beginning of our solar system. Our galaxy, the Milky Way, is one of the many galaxies that were formed. Inside the Milky Way, we have many stars, solar systems, and ...
... • As the matter cools down, they formed many galaxies and stars. About 4.5 billion years ago our star, the Sun, was born. This was the beginning of our solar system. Our galaxy, the Milky Way, is one of the many galaxies that were formed. Inside the Milky Way, we have many stars, solar systems, and ...
Contents - Beck-Shop
... What Has the Heliocentric Theory Taught Us? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A Somewhat Complicated Explanation of Kepler’s Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . First Law: The Orbit of Every Planet Is an Ellipse with the Sun at th ...
... What Has the Heliocentric Theory Taught Us? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A Somewhat Complicated Explanation of Kepler’s Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . First Law: The Orbit of Every Planet Is an Ellipse with the Sun at th ...
Contents - No Starch Press
... What Has the Heliocentric Theory Taught Us? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A Somewhat Complicated Explanation of Kepler’s Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Firs ...
... What Has the Heliocentric Theory Taught Us? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A Somewhat Complicated Explanation of Kepler’s Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Firs ...
Non-standard cosmology
A non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the Big Bang model of standard physical cosmology. In the history of cosmology, various scientists and researchers have disputed parts or all of the Big Bang due to a rejection or addition of fundamental assumptions needed to develop a theoretical model of the universe. From the 1940s to the 1960s, the astrophysical community was equally divided between supporters of the Big Bang theory and supporters of a rival steady state universe. It was not until advances in observational cosmology in the late 1960s that the Big Bang would eventually become the dominant theory, and today there are few active researchers who dispute it.The term non-standard is applied to any cosmological theory that does not conform to the scientific consensus, but is not used in describing alternative models where no consensus has been reached, and is also used to describe theories that accept a ""big bang"" occurred but differ as to the detailed physics of the origin and evolution of the universe. Because the term depends on the prevailing consensus, the meaning of the term changes over time. For example, hot dark matter would not have been considered non-standard in 1990, but would be in 2010. Conversely, a non-zero cosmological constant resulting in an accelerating universe would have been considered non-standard in 1990, but is part of the standard cosmology in 2010.