HAVE YOU EVER GONE - Apologetics Press
... etc.—the things out there that either reflect or generate light so that we can see them. But what about all of the dark area between those objects? Scientists estimate that area makes up 96% of the whole Universe. That means that most of the Universe is space! Is there anything in that space? Is it ...
... etc.—the things out there that either reflect or generate light so that we can see them. But what about all of the dark area between those objects? Scientists estimate that area makes up 96% of the whole Universe. That means that most of the Universe is space! Is there anything in that space? Is it ...
A time travel of 14 billion years
... • We see that galaxies receede from us, and that each of them is at a distance D proportional to its velocity V (Hubble’s law): D= V t • If this law was valid also in the past, distances tend to zero when t=0, that means the universe reduced to a point. • The present value, t= 14 Billion years, tell ...
... • We see that galaxies receede from us, and that each of them is at a distance D proportional to its velocity V (Hubble’s law): D= V t • If this law was valid also in the past, distances tend to zero when t=0, that means the universe reduced to a point. • The present value, t= 14 Billion years, tell ...
Lec16_2D
... Hubble expansion would proceed at a constant speed. The age of the universe would then just be given by 1 / H0. In a real universe with mass, gravity must have (over time) slowed the Hubble expansion. In the past, the galaxies must have been moving apart faster. The age must therefore be less than 1 ...
... Hubble expansion would proceed at a constant speed. The age of the universe would then just be given by 1 / H0. In a real universe with mass, gravity must have (over time) slowed the Hubble expansion. In the past, the galaxies must have been moving apart faster. The age must therefore be less than 1 ...
Poincaré Conjecture
... Zhu Xiping and Cao Huaidong published a paper "A Complete Proof of the Poincaré and Geometrization Conjectures Application of the Hamilton-Perelman Theory of the Ricci Flow" in the Asian Journal of ...
... Zhu Xiping and Cao Huaidong published a paper "A Complete Proof of the Poincaré and Geometrization Conjectures Application of the Hamilton-Perelman Theory of the Ricci Flow" in the Asian Journal of ...
What is the Poincaré Conjecture?
... Zhu Xiping and Cao Huaidong published a paper "A Complete Proof of the Poincaré and Geometrization Conjectures Application of the Hamilton-Perelman Theory of the Ricci Flow" in the Asian Journal of ...
... Zhu Xiping and Cao Huaidong published a paper "A Complete Proof of the Poincaré and Geometrization Conjectures Application of the Hamilton-Perelman Theory of the Ricci Flow" in the Asian Journal of ...
III. Contents of The Universe
... clouds of gas and dust in space some are illuminated by nearby stars (bright nebulae) others remain dark and are only seen if they obscure a brighter object (dark nebulae) ...
... clouds of gas and dust in space some are illuminated by nearby stars (bright nebulae) others remain dark and are only seen if they obscure a brighter object (dark nebulae) ...
The initial conditions and the large
... – The Universe in its globality can be treated as a physical system – Science can deal with times and places we cannot experience (the observable Universe is a strict subset of the Universe) ...
... – The Universe in its globality can be treated as a physical system – Science can deal with times and places we cannot experience (the observable Universe is a strict subset of the Universe) ...
Gamma-Ray Bursts
... Ranking second only behind the Big Bang, Gamma-ray bursts (GRBs) are the most luminous explosions known to occur in our Universe. These milliseconds to minutes lasting flashes of gamma-ray photons, the most energetic form of light, release as much energy in their short duration as our Sun will in it ...
... Ranking second only behind the Big Bang, Gamma-ray bursts (GRBs) are the most luminous explosions known to occur in our Universe. These milliseconds to minutes lasting flashes of gamma-ray photons, the most energetic form of light, release as much energy in their short duration as our Sun will in it ...
Birth, Age and the Future of the Universe
... (Figure 5). New stars are born and old stars die continuously until all gas is used up. Some galaxies have already exhausted their gas supply; our Galaxy can still go on for a long time. A contracting star heats up until its interior has reached a temperature of a few million degrees. At this moment ...
... (Figure 5). New stars are born and old stars die continuously until all gas is used up. Some galaxies have already exhausted their gas supply; our Galaxy can still go on for a long time. A contracting star heats up until its interior has reached a temperature of a few million degrees. At this moment ...
Chapter 18 - the Universe Begins
... (i.e. light) to travel freely through space, making it transparent for the first time. Almost 25 years before the Big Bang theory was first coined, Einstein proposed that matter and energy were linked, and could be transformed from one form to the other. A number of scientists were working on this i ...
... (i.e. light) to travel freely through space, making it transparent for the first time. Almost 25 years before the Big Bang theory was first coined, Einstein proposed that matter and energy were linked, and could be transformed from one form to the other. A number of scientists were working on this i ...
CELT Review: 1,2 May 2002 Session 1
... The physics of star formation The formation and evolution of planetary systems Physical processes in the Solar System The star formation and chemical evolution history of galaxies in the local universe. ...
... The physics of star formation The formation and evolution of planetary systems Physical processes in the Solar System The star formation and chemical evolution history of galaxies in the local universe. ...
Unit 1: The Big Picture
... Size Increased in size by 1030 in less than 10-30 sec. (started out the size of an atom and grew instantly to the size of a galaxy) Continues to grow as galaxies are moving away from each other…Hubble’s Law ...
... Size Increased in size by 1030 in less than 10-30 sec. (started out the size of an atom and grew instantly to the size of a galaxy) Continues to grow as galaxies are moving away from each other…Hubble’s Law ...
Ch. 26.5: The Expanding Universe
... Exerts gravitational force on visible matter Universe may be 90% + dark matter Why do we think Dark Matter exists? Galaxies are accelerating faster than they should be (based on the observable matter in the Universe). The acceleration due to gravity does not match up with the amount of matter that w ...
... Exerts gravitational force on visible matter Universe may be 90% + dark matter Why do we think Dark Matter exists? Galaxies are accelerating faster than they should be (based on the observable matter in the Universe). The acceleration due to gravity does not match up with the amount of matter that w ...
or view
... In 1948, Russian-born physicist George Gamow came up with the idea that if all galaxies are travelling away from each other at high speed, there must have been a point way back in the past when the entire Universe was concentrated in a single point. The term "the Big Bang" was originally coined in o ...
... In 1948, Russian-born physicist George Gamow came up with the idea that if all galaxies are travelling away from each other at high speed, there must have been a point way back in the past when the entire Universe was concentrated in a single point. The term "the Big Bang" was originally coined in o ...
8Sept103_2014
... • The Scientific Method is the procedure scientists use to construct their ideas about how the Universe works. – Start with a hypothesis – a testable idea of how something works – Test the hypothesis! – If the test fails, modify or abandon the hypothesis, and retest. ...
... • The Scientific Method is the procedure scientists use to construct their ideas about how the Universe works. – Start with a hypothesis – a testable idea of how something works – Test the hypothesis! – If the test fails, modify or abandon the hypothesis, and retest. ...
1_Introduction
... t=0: The Big Bang Why do we care that this happened? If the universe had remained dense, it wouldn’t have cooled enough for nuclei, atoms, galaxies, and us to form. (Speaking to an audience of humans, I make no apologies for my human chauvinism.) ...
... t=0: The Big Bang Why do we care that this happened? If the universe had remained dense, it wouldn’t have cooled enough for nuclei, atoms, galaxies, and us to form. (Speaking to an audience of humans, I make no apologies for my human chauvinism.) ...
SAMPLE PUBLIC SERVICE ANNOUNCEMENTS
... Moon, comets, star birth, and distant galaxies, and compares how astronomers centuries ago viewed these phenomena with the discoveries of modern day space ...
... Moon, comets, star birth, and distant galaxies, and compares how astronomers centuries ago viewed these phenomena with the discoveries of modern day space ...
Review
... ‘ The farther away a galaxy is, the faster it recedes.’ à Imagine a raisin-bread dough è We can determine the distance to galaxies by measuring the redshift of the light we receive è Hubble constant from Hubble’s law provide the expansion rate of universe, hence, the age of universe of about 14 b ...
... ‘ The farther away a galaxy is, the faster it recedes.’ à Imagine a raisin-bread dough è We can determine the distance to galaxies by measuring the redshift of the light we receive è Hubble constant from Hubble’s law provide the expansion rate of universe, hence, the age of universe of about 14 b ...
Teacher`s Guide Understanding: The Universe
... determine how much they know about star evolution. 2. If students do not fully understand the terms red giant, white dwarf, neutron star, supernova, and black hole, have them use the research materials you have provided or the Internet to become acquainted with the terms and understand how they rela ...
... determine how much they know about star evolution. 2. If students do not fully understand the terms red giant, white dwarf, neutron star, supernova, and black hole, have them use the research materials you have provided or the Internet to become acquainted with the terms and understand how they rela ...
Eye on the Sky - Sci-Port
... skills required in scientific inquiry: recognition of pattern, identification of attributes, and classification. This lesson is applicable for 4th-8th grades. The lesson plan for these on-line activities may be downloaded from the following website: http://amazing-space.stsci.edu/resources/explorati ...
... skills required in scientific inquiry: recognition of pattern, identification of attributes, and classification. This lesson is applicable for 4th-8th grades. The lesson plan for these on-line activities may be downloaded from the following website: http://amazing-space.stsci.edu/resources/explorati ...
TA`s solution set
... old. Describe what evidence you could provide that would convince Fred that the universe cannot be static, infinitely large, and eternally old. (Remember, skeptical Fred prefers evidence that he can see directly with his own eyes.) The most readily available evidence that we do not live in a static, ...
... old. Describe what evidence you could provide that would convince Fred that the universe cannot be static, infinitely large, and eternally old. (Remember, skeptical Fred prefers evidence that he can see directly with his own eyes.) The most readily available evidence that we do not live in a static, ...
Multiple choice test questions 2, Winter Semester
... A) They combined in groups to make protons, neutrons, and their antiparticles. B) They froze out of the soup of particles at the end of the era. C) They evaporated. D) They combined in groups to make electrons and neutrinos. 24) Why do we expect the cosmic background radiation to be almost, but not ...
... A) They combined in groups to make protons, neutrons, and their antiparticles. B) They froze out of the soup of particles at the end of the era. C) They evaporated. D) They combined in groups to make electrons and neutrinos. 24) Why do we expect the cosmic background radiation to be almost, but not ...
04 Astrophysics_-_lesson_4 cosmology
... standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by ...
... standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by ...
SOLUTIONS TO PROBLEM SET # 4
... ρair ≈ 1.2 kg/ m3 at sea level at a temperature T = 20◦ C = 68◦ F . (It becomes denser when cooler, and less dense when warmer.) Thus, the density of matter at the time of primordial nucleosynthesis is less than the density of the Earth’s air at sea level, by a factor of a hundred. (Although the uni ...
... ρair ≈ 1.2 kg/ m3 at sea level at a temperature T = 20◦ C = 68◦ F . (It becomes denser when cooler, and less dense when warmer.) Thus, the density of matter at the time of primordial nucleosynthesis is less than the density of the Earth’s air at sea level, by a factor of a hundred. (Although the uni ...
Lecture 12
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...