Chapter 14 The Milky Way Galaxy
... 14.2 Measuring the Milky Way This allows us to measure the distances to these stars. • RR Lyrae stars all have about the same luminosity; knowing their apparent magnitude allows us to calculate the distance. • Cepheids have a luminosity that is strongly correlated with the period of their oscillati ...
... 14.2 Measuring the Milky Way This allows us to measure the distances to these stars. • RR Lyrae stars all have about the same luminosity; knowing their apparent magnitude allows us to calculate the distance. • Cepheids have a luminosity that is strongly correlated with the period of their oscillati ...
Test 3 Version 3 1. Milky Way halo stars follow: (a) differential
... A totally reflected B only partially reflected C totally absorbed D reflected before it reaches the surface 35. Which of the following can escape from within a "black hole radius" of a black hole? A photons B anti-particles C gamma rays D none of the above or anything else, for that matter 36. black ...
... A totally reflected B only partially reflected C totally absorbed D reflected before it reaches the surface 35. Which of the following can escape from within a "black hole radius" of a black hole? A photons B anti-particles C gamma rays D none of the above or anything else, for that matter 36. black ...
Chapter 1 Section Misconception Truth Distances in the Universe
... the core. All the light we see comes from the photosphere; the core is well hidden below hundreds of thousands of kilometers of solar gas. The absorption lines and the continuum are both formed in the photosphere; the fact that absorption lines are detected shows that the outer part o ...
... the core. All the light we see comes from the photosphere; the core is well hidden below hundreds of thousands of kilometers of solar gas. The absorption lines and the continuum are both formed in the photosphere; the fact that absorption lines are detected shows that the outer part o ...
GEARS Workshop Monday - Georgia Southern University
... • Complete this exercise in groups of 2 to 3. • This is designed to be completed while you are discussing with other people. • This is not designed to be completed on your own. (despite the fact we keep assigning them as homework) ...
... • Complete this exercise in groups of 2 to 3. • This is designed to be completed while you are discussing with other people. • This is not designed to be completed on your own. (despite the fact we keep assigning them as homework) ...
Spectroscopy
... Detecting Extrasolar Planets Since then, we’ve confirmed the discovery of over 1,500 3,400 planets orbiting around other stars. But how do we detect them? We have 3 methods: - Spectroscopy (red and blueshift like how we detect binary stars.) - Transit (when the planet goes in front of the star, dim ...
... Detecting Extrasolar Planets Since then, we’ve confirmed the discovery of over 1,500 3,400 planets orbiting around other stars. But how do we detect them? We have 3 methods: - Spectroscopy (red and blueshift like how we detect binary stars.) - Transit (when the planet goes in front of the star, dim ...
The\^ G Infrared Search for Extraterrestrial Civilizations with Large
... We now illustrate our formalism by translating some speculative forms of advanced civilizations from the scientific and popular literature into the AGENT parameterization. First, we consider civilizations with energy supplies comparable to their star’s total luminosity. A “classical” Dyson sphere th ...
... We now illustrate our formalism by translating some speculative forms of advanced civilizations from the scientific and popular literature into the AGENT parameterization. First, we consider civilizations with energy supplies comparable to their star’s total luminosity. A “classical” Dyson sphere th ...
Way Milky the MAPPING
... Astronomical Society. The team reported results of a new mathematical model that suggests the stars move in peanut shell– or figure eight–shaped orbits. Where previous explanations envisioned a relatively straightforward orbital journey—often described as 44 ROCHESTER REVIEW January–February 2014 ...
... Astronomical Society. The team reported results of a new mathematical model that suggests the stars move in peanut shell– or figure eight–shaped orbits. Where previous explanations envisioned a relatively straightforward orbital journey—often described as 44 ROCHESTER REVIEW January–February 2014 ...
ppp
... • Java3D is a viable tool for creating scientific simulations and visualizations • Performance losses from using Java3D are relatively big compared with pure OpenGL • Development time is significantly less, due to higher level abstraction of Java3D’s API • NASA officials have already contacted us… ( ...
... • Java3D is a viable tool for creating scientific simulations and visualizations • Performance losses from using Java3D are relatively big compared with pure OpenGL • Development time is significantly less, due to higher level abstraction of Java3D’s API • NASA officials have already contacted us… ( ...
galaxy.
... universe. The entire universe is expanding, so the distance between all galaxies is increasing (except ones close enough to be bound together by gravity). If we lived in another distant galaxy, we would see all galaxies moving away from us. ...
... universe. The entire universe is expanding, so the distance between all galaxies is increasing (except ones close enough to be bound together by gravity). If we lived in another distant galaxy, we would see all galaxies moving away from us. ...
Astronomy 401 Lecture 1 Overview of the Universe 1 Class overview
... only a fraction F ∼ rmax /λ of the sky will be covered with stars. Note that this result will also be found if the universe is infinitely large, but has no stars beyond a distance rmax . • Assumed that the universe is infinitely old. When we see stars farther away, we’re also seeing stars farther ba ...
... only a fraction F ∼ rmax /λ of the sky will be covered with stars. Note that this result will also be found if the universe is infinitely large, but has no stars beyond a distance rmax . • Assumed that the universe is infinitely old. When we see stars farther away, we’re also seeing stars farther ba ...
Galaxy
... When one star hides another star it is called an eclipsing star Astronomers know there are actually 2 stars by looking at the effects of gravity Our solar system is not the only solar system with planets revolving around a star In 2000, astronomers discovered a solar system about 10.5 light- ...
... When one star hides another star it is called an eclipsing star Astronomers know there are actually 2 stars by looking at the effects of gravity Our solar system is not the only solar system with planets revolving around a star In 2000, astronomers discovered a solar system about 10.5 light- ...
The Universe and Galaxies - West Jefferson Local Schools
... - time is required for light to travel through space - light travels a little over 8 minutes from the sun to earth - the farther away an object/star is, the longer it takes for light to get to us, and the older the light is when it gets to us = “Light is OLD” - we see the past of other stars in the ...
... - time is required for light to travel through space - light travels a little over 8 minutes from the sun to earth - the farther away an object/star is, the longer it takes for light to get to us, and the older the light is when it gets to us = “Light is OLD” - we see the past of other stars in the ...
Limits on Interstellar Messages
... implementation requirements, in situations where energy is cheap, might easily favor the use of optical. ...
... implementation requirements, in situations where energy is cheap, might easily favor the use of optical. ...
Study Guide 4 Part A Outline
... Universe is expanding The expansion started at some definite time in the past (the Big Bang)Universe expands away from every galaxy. Every galaxy would see its own version of the Hubble Law. Quasars & Active Galactic Nuclei o Quasars and other active galaxies emit large amounts of energy from re ...
... Universe is expanding The expansion started at some definite time in the past (the Big Bang)Universe expands away from every galaxy. Every galaxy would see its own version of the Hubble Law. Quasars & Active Galactic Nuclei o Quasars and other active galaxies emit large amounts of energy from re ...
Lec12
... move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
... move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
Habitable zone - Penn State University
... • Caveat: For planets with low volcanic outgassing rates and with low stellar insolation, it may not be possible to maintain warm climates all the time. Instead, one may get limit cycling behavior, in which the climate alternates between warm and globally glaciated states (see, e.g., Kadoya and Taji ...
... • Caveat: For planets with low volcanic outgassing rates and with low stellar insolation, it may not be possible to maintain warm climates all the time. Instead, one may get limit cycling behavior, in which the climate alternates between warm and globally glaciated states (see, e.g., Kadoya and Taji ...
ASTR1010 – Lecture 2 - University of Colorado Boulder
... – What is retrograde motion? – What are circumpolar stars? ...
... – What is retrograde motion? – What are circumpolar stars? ...
Getting to Know: Structure of the Universe
... How is a solar system different from a galaxy? A solar system is a star and the objects that orbit that star. Scientists have found several solar systems in our galaxy, many of which have planets surrounding them. If the Milky Way galaxy were the size of a quarter, the Sun would be the size of a sin ...
... How is a solar system different from a galaxy? A solar system is a star and the objects that orbit that star. Scientists have found several solar systems in our galaxy, many of which have planets surrounding them. If the Milky Way galaxy were the size of a quarter, the Sun would be the size of a sin ...
Sky News – March 2015 The Realm of the Galaxies
... Coma Bernices. With our night sky pointing away from the hustle and bustle of the plane of the Milky Way, we can see deep into the sky without objects being obscured or dimmed by looking through our galaxy. In spring skies we are treated to views of the closest cluster of galaxies in Virgo of which ...
... Coma Bernices. With our night sky pointing away from the hustle and bustle of the plane of the Milky Way, we can see deep into the sky without objects being obscured or dimmed by looking through our galaxy. In spring skies we are treated to views of the closest cluster of galaxies in Virgo of which ...
CH29 The Life of a Star
... It is the name of Galaxy. It has spiral shape. It contains 200 billions stars. Sun is one of the star in Milky way. ...
... It is the name of Galaxy. It has spiral shape. It contains 200 billions stars. Sun is one of the star in Milky way. ...
Galaxies
... stars, plus gas and dust arranged into three general components: – The halo: a roughly spherical distribution which contains the oldest stars in the Galaxy including Globular Clusters; – The nuclear bulge and Galactic Center: that harbours a compact object of very large mass, strongly suspected to b ...
... stars, plus gas and dust arranged into three general components: – The halo: a roughly spherical distribution which contains the oldest stars in the Galaxy including Globular Clusters; – The nuclear bulge and Galactic Center: that harbours a compact object of very large mass, strongly suspected to b ...
From Earth to the Galaxies
... Alpha Centauri, is located more than 40,000,000,000,000 km from our star. It’s much easier to write four light years (or 4 ly). Likewise, our Galaxy, the Milky Way, is 100,000 light years across. The same figure expressed in kilometres would contain 18 zeroes! A distance of 100,000 ly means that a r ...
... Alpha Centauri, is located more than 40,000,000,000,000 km from our star. It’s much easier to write four light years (or 4 ly). Likewise, our Galaxy, the Milky Way, is 100,000 light years across. The same figure expressed in kilometres would contain 18 zeroes! A distance of 100,000 ly means that a r ...
Word
... about the object. Before using this tool to better understand the size of the universe and the astronomical objects inside of it, it is important that you fill out the tables below to better familiarize yourself with the applet. You will reference back to this page throughout the lab when making cal ...
... about the object. Before using this tool to better understand the size of the universe and the astronomical objects inside of it, it is important that you fill out the tables below to better familiarize yourself with the applet. You will reference back to this page throughout the lab when making cal ...
The Hubble Space Telescope - the first 10 years
... • Thankfully Comet impacts are very rare. • However: In 1995 a comet hit Jupiter ! ...
... • Thankfully Comet impacts are very rare. • However: In 1995 a comet hit Jupiter ! ...
Historical overview
... as expansion continued and temperatures dropped, quarks combined to protons and neutrons and the universe became filled with hydrogen plasma. The Universe was still opaque to light and as the universe expanded further, both the plasma and the radiation ...
... as expansion continued and temperatures dropped, quarks combined to protons and neutrons and the universe became filled with hydrogen plasma. The Universe was still opaque to light and as the universe expanded further, both the plasma and the radiation ...
Fermi paradox
The Fermi paradox (or Fermi's paradox) is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial civilizations, such as in the Drake equation, and the lack of evidence for such civilizations. The basic points of the argument, made by physicists Enrico Fermi and Michael H. Hart, are: The Sun is a typical star, and there are billions of stars in the galaxy that are billions of years older. With high probability, some of these stars will have Earth-like planets, and if the earth is typical, some might develop intelligent life. Some of these civilizations might develop interstellar travel, a step the Earth is investigating now. Even at the slow pace of currently envisioned interstellar travel, the Milky Way galaxy could be completely traversed in about a million years.According to this line of thinking, the Earth should already have been visited by extraterrestrial aliens though Fermi saw no convincing evidence of this, nor any signs of alien intelligence anywhere in the observable universe, leading him to ask, ""Where is everybody?""