PHYS 175 (2014) Final Examination Name: ___SOLUTION_____
... Massive objects warp spacetime. If a massive object is aligned between an observer and a light source, some rays of light from the source, which would not normally be directed toward the observer, can be deflected toward the observer. The effect may ma ...
... Massive objects warp spacetime. If a massive object is aligned between an observer and a light source, some rays of light from the source, which would not normally be directed toward the observer, can be deflected toward the observer. The effect may ma ...
CMBR and BH evaporation
... Note, in 2014 in [2] some calculations were presented that showed that the star stops collapsing at a finite radius ...
... Note, in 2014 in [2] some calculations were presented that showed that the star stops collapsing at a finite radius ...
Document
... More dust along the disk causes the distribution of stars to drop-off artificially – objects more than a few kpc from the Sun are obscured at optical wavelengths. ...
... More dust along the disk causes the distribution of stars to drop-off artificially – objects more than a few kpc from the Sun are obscured at optical wavelengths. ...
Diameter of the Milky Way
... The Moon is made of green cheese. Atomic nuclei are the smallest particles in nature. A magnet will pick up a copper penny. Cosmic rays cannot penetrate the thickness of your Conceptual ...
... The Moon is made of green cheese. Atomic nuclei are the smallest particles in nature. A magnet will pick up a copper penny. Cosmic rays cannot penetrate the thickness of your Conceptual ...
UNIT 4 - Rowan County Schools
... Radio Waves (RF) Radio waves • Have very low energy • Used to gather information about: – Supernova – Quasars/blazars (activie galaxies) – Pulsars – The interstellar medium – The big bang ...
... Radio Waves (RF) Radio waves • Have very low energy • Used to gather information about: – Supernova – Quasars/blazars (activie galaxies) – Pulsars – The interstellar medium – The big bang ...
Astronomy 114 Problem Set # 7 Due: 30 Apr 2007 SOLUTIONS 1
... gravitational pull at some radius R is induced by the mass within R, we denote it M(R). For the centrifugal force, we have ...
... gravitational pull at some radius R is induced by the mass within R, we denote it M(R). For the centrifugal force, we have ...
PHY 150
... Kepler’s Law of Periods (derived from Newton’s 2nd Law) relates the period of an object to the radius of the object when the object is circling some massive object, i.e. T 2 ≈ r 3 . Most of the mass in the Milky Way galaxy lies in the galactic nucleus. Thus, stars in the spiral arms can be envisione ...
... Kepler’s Law of Periods (derived from Newton’s 2nd Law) relates the period of an object to the radius of the object when the object is circling some massive object, i.e. T 2 ≈ r 3 . Most of the mass in the Milky Way galaxy lies in the galactic nucleus. Thus, stars in the spiral arms can be envisione ...
Document
... most stable burning object in Milky Way galaxy with a very low .1% variance (over 11 years span), so small it has no impact on Earth's climate. The search for a very stable burning star like our sun is called a solar twin. An identical solar twin has yet to be found, closest is stars with about 3% v ...
... most stable burning object in Milky Way galaxy with a very low .1% variance (over 11 years span), so small it has no impact on Earth's climate. The search for a very stable burning star like our sun is called a solar twin. An identical solar twin has yet to be found, closest is stars with about 3% v ...
November 2013 - Pomona Valley Amateur Astronomers
... In this article there is a great deal of speculation but it indicates the areas that are being investigated. Science can never “prove” a theory. But one observation can “falsify” it. So long as a concept is consistent with all observations it can be considered reasonable. If it can hold up under int ...
... In this article there is a great deal of speculation but it indicates the areas that are being investigated. Science can never “prove” a theory. But one observation can “falsify” it. So long as a concept is consistent with all observations it can be considered reasonable. If it can hold up under int ...
Cosmos & Contact - Access Research Network
... • If Earth’s crust thinner, too much volcanism and plate movement. • The Moon apparently formed from the Earth’s crust, when we were struck by a Mars-sized planet, a very flukey event! ...
... • If Earth’s crust thinner, too much volcanism and plate movement. • The Moon apparently formed from the Earth’s crust, when we were struck by a Mars-sized planet, a very flukey event! ...
Presentation available here - Lunar and Planetary Institute
... One of the greatest challenges to astrophysics now is to understand the nature of the Dark Energy that drives the acceleration. The dark energy is probably a field (like a magnetic field, but different), but it is 120 orders of magnitude smaller than physicists would expect. No current theory of phy ...
... One of the greatest challenges to astrophysics now is to understand the nature of the Dark Energy that drives the acceleration. The dark energy is probably a field (like a magnetic field, but different), but it is 120 orders of magnitude smaller than physicists would expect. No current theory of phy ...
Uranometria 2000.0`s Dark Nebulae Database
... Dark nebulae are composed of clouds of dust and gas sufficiently dense as to become opaque. They are detectable if positioned between the observer and a bright nebula or a very dense star field, against which they can be seen silhouetted. Observationally, dark nebulae are among the most difficult de ...
... Dark nebulae are composed of clouds of dust and gas sufficiently dense as to become opaque. They are detectable if positioned between the observer and a bright nebula or a very dense star field, against which they can be seen silhouetted. Observationally, dark nebulae are among the most difficult de ...
Slide 1
... • Typical time scale for a stellar event is 1 to 2 months. • If the ’lens’ star has a planet, its gravity may also contribute to lensing the light from the ’source’. • This produces a secondary peak in the light curve. • Typical exoplanetary deviation lasts only hours to days. ...
... • Typical time scale for a stellar event is 1 to 2 months. • If the ’lens’ star has a planet, its gravity may also contribute to lensing the light from the ’source’. • This produces a secondary peak in the light curve. • Typical exoplanetary deviation lasts only hours to days. ...
Page 25 - Types of Galaxies
... • These galaxies are neither spiral nor elliptical. • They tend to be smaller objects that are without definite shape and tend to have very hot newer stars mixed in with lots of gas and dust. • These galaxies often have active regions of star formation. Sometimes the irregular shape of these galaxie ...
... • These galaxies are neither spiral nor elliptical. • They tend to be smaller objects that are without definite shape and tend to have very hot newer stars mixed in with lots of gas and dust. • These galaxies often have active regions of star formation. Sometimes the irregular shape of these galaxie ...
Sky News – March 2015 The Realm of the Galaxies
... west with the onset of darkness, bringing the spring constellations of Leo, Virgo, Coma Bernices and Ursa Major into prominence. It is within these that hosts of galaxies reside. The North Galactic Pole, the point in the sky directly over the centre of our galaxy, is in the constellation Coma Bernic ...
... west with the onset of darkness, bringing the spring constellations of Leo, Virgo, Coma Bernices and Ursa Major into prominence. It is within these that hosts of galaxies reside. The North Galactic Pole, the point in the sky directly over the centre of our galaxy, is in the constellation Coma Bernic ...
The Adventures of π-Man: Measuring the Universe
... π-man explains. Here is a “paradox” from the early days of Einstein’s Special Theory of Relativity. Consider a spinning disc (the merry-go-round in π-man’s adventure). As measured by an observer outside the disc, the relation between the circumference and the radius of the disc, whether the disc is ...
... π-man explains. Here is a “paradox” from the early days of Einstein’s Special Theory of Relativity. Consider a spinning disc (the merry-go-round in π-man’s adventure). As measured by an observer outside the disc, the relation between the circumference and the radius of the disc, whether the disc is ...
Where is the Solar System in the Universe?
... Scientists find it hard to work with the measurements we use on earth, like kilometers and miles, because the distances are so great it is hard for us to comprehend such enormous numbers. ...
... Scientists find it hard to work with the measurements we use on earth, like kilometers and miles, because the distances are so great it is hard for us to comprehend such enormous numbers. ...
The Universe Starring Man? The Impact of Scientific
... Also after Copernicus • Heat Death of the Universe? • The Big Crunch ...
... Also after Copernicus • Heat Death of the Universe? • The Big Crunch ...
STATES OF MATTER
... ionized gas. A plasma is a very good conductor of electricity and is affected by magnetic fields. Plasmas, like gases • Plasma is the have an indefinite common state shape and an of matter indefinite volume. ...
... ionized gas. A plasma is a very good conductor of electricity and is affected by magnetic fields. Plasmas, like gases • Plasma is the have an indefinite common state shape and an of matter indefinite volume. ...
Ch. 5 The Universe and Solar System
... universe is expanding. • Red shift—means movement is away. • Proof 2: 1965 Arno Penzlas and Robert Wilson discovered background radiation—a remnant of the Big Bang. It is evenly distributed. • Proof 3: 1995 NASA discovered deuterium (heavy isotope of H) scattered throughout the universe. ...
... universe is expanding. • Red shift—means movement is away. • Proof 2: 1965 Arno Penzlas and Robert Wilson discovered background radiation—a remnant of the Big Bang. It is evenly distributed. • Proof 3: 1995 NASA discovered deuterium (heavy isotope of H) scattered throughout the universe. ...
Hubble`s Expansion of the Universe
... moving at different speeds. From the diagram it can be seen that radial velocity is proportional to distance – distant galaxies are moving away from Earth faster than nearby ones. This became known as Hubble’s Law. ...
... moving at different speeds. From the diagram it can be seen that radial velocity is proportional to distance – distant galaxies are moving away from Earth faster than nearby ones. This became known as Hubble’s Law. ...
Astronomy Review revised Key
... 16. Explain how Barnard's star and Mira are similar and how they are different. _____________ _______They are both red, but Mira is a giant and Barnard’ star is main sequence. 17. Describe three features of the star Deneb. white__ ___supergiant__ _very bright__ ...
... 16. Explain how Barnard's star and Mira are similar and how they are different. _____________ _______They are both red, but Mira is a giant and Barnard’ star is main sequence. 17. Describe three features of the star Deneb. white__ ___supergiant__ _very bright__ ...
STATES OF MATTER
... Particles of liquids are tightly packed, but are far enough apart to slide over one another. Liquids have an indefinite shape and a definite volume. ...
... Particles of liquids are tightly packed, but are far enough apart to slide over one another. Liquids have an indefinite shape and a definite volume. ...
Galaxy - Bama.ua.edu
... was 8 minutes ago. • The nearest star, 4LY away, as it was 4 years ago. • Andromeda galaxy as it was about 2 million yr ago. • If we look ~14 billion LY away, expect to see universe in its early, hot, compressed, uniform gas state. ...
... was 8 minutes ago. • The nearest star, 4LY away, as it was 4 years ago. • Andromeda galaxy as it was about 2 million yr ago. • If we look ~14 billion LY away, expect to see universe in its early, hot, compressed, uniform gas state. ...