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... When we look at other star systems, one of the first things we look for is what’s called the “habitable zone”. This is the area in the star system where you’d be just the right distance for water to be liquid. Why? Because it might mean a planet like Earth that we could someday colonize. So what fac ...
... When we look at other star systems, one of the first things we look for is what’s called the “habitable zone”. This is the area in the star system where you’d be just the right distance for water to be liquid. Why? Because it might mean a planet like Earth that we could someday colonize. So what fac ...
Intelligent life in cosmology
... the implication that whenever a microwave oven was turned on, so much energy was created that the Earth was blown apart. So physicists are very reluctant to abandon unitarity. Unitarity is most often applied to what physicists call the S-matrix, which is the quantum mechanical linear operator that t ...
... the implication that whenever a microwave oven was turned on, so much energy was created that the Earth was blown apart. So physicists are very reluctant to abandon unitarity. Unitarity is most often applied to what physicists call the S-matrix, which is the quantum mechanical linear operator that t ...
Chapter 17
... 15. How do we know the position of our sun and it's rotational velocity within the Galaxy? A. From radio waves reflected of the galactic nucleus. B. From its Doppler shift C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. Th ...
... 15. How do we know the position of our sun and it's rotational velocity within the Galaxy? A. From radio waves reflected of the galactic nucleus. B. From its Doppler shift C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. Th ...
Hubble`s Constant - Scientific Research Publishing
... The most obvious feature of the Big Bang cosmological model [3] [4] is its statement that the Cosmos began at some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in ...
... The most obvious feature of the Big Bang cosmological model [3] [4] is its statement that the Cosmos began at some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in ...
Chapter 9 powerpoint presentation
... is taken care of by the Rossland Mean opacity. Take two moments of the R.T.E. which means integrate over solid angle, d, to get the first moment. Then multiply by Cos and integrate again to get the second moment. After some algebra and using some previous results you can show that T4 = ¾ Te4 ( ...
... is taken care of by the Rossland Mean opacity. Take two moments of the R.T.E. which means integrate over solid angle, d, to get the first moment. Then multiply by Cos and integrate again to get the second moment. After some algebra and using some previous results you can show that T4 = ¾ Te4 ( ...
1 Exoplanets 2 Types of Exoplanets
... Exoplanets are a hot topic in astronomy right now. As of January, 2015, there are over 1500 confirmed exoplanet discoveries with more than 3000 candidates still waiting to be confirmed. These exoplanets and exoplanet systems are of extreme interest to astronomers as they provide insights into planet ...
... Exoplanets are a hot topic in astronomy right now. As of January, 2015, there are over 1500 confirmed exoplanet discoveries with more than 3000 candidates still waiting to be confirmed. These exoplanets and exoplanet systems are of extreme interest to astronomers as they provide insights into planet ...
Assignment 10
... 6. Astronomers believe that the center of our Galaxy has a black hole with enough mass inside to make almost 3 million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. t ...
... 6. Astronomers believe that the center of our Galaxy has a black hole with enough mass inside to make almost 3 million Suns! How do astronomers think a black hole could acquire so much mass? a. the Galaxy formed from one supergiant star, and most of what is left of it is now in the black hole b. t ...
StewartCalcET8_13_04
... Since the gravitational force of the sun on a planet is so much larger than the forces exerted by other celestial bodies, we can safely ignore all bodies in the universe except the sun and one planet revolving about it. We use a coordinate system with the sun at the origin and we let r = r(t) be the ...
... Since the gravitational force of the sun on a planet is so much larger than the forces exerted by other celestial bodies, we can safely ignore all bodies in the universe except the sun and one planet revolving about it. We use a coordinate system with the sun at the origin and we let r = r(t) be the ...
Chapter 14 The Milky Way Galaxy
... mass to act as a gravitational lens: Observation of such events suggests that low-mass white dwarfs could account for about half of the mass needed. The rest is still a mystery. ...
... mass to act as a gravitational lens: Observation of such events suggests that low-mass white dwarfs could account for about half of the mass needed. The rest is still a mystery. ...
lab 11 only - Penn State University
... spherical cloud of stars that surrounds the entire galaxy). The halo is much larger than the bulge. Our Milky Way Galaxy is made up of mostly stars, gas, and dust. The dust blocks out light from distant stars, and makes it hard to see a lot of the galaxy, especially the bulge and parts of the disk. ...
... spherical cloud of stars that surrounds the entire galaxy). The halo is much larger than the bulge. Our Milky Way Galaxy is made up of mostly stars, gas, and dust. The dust blocks out light from distant stars, and makes it hard to see a lot of the galaxy, especially the bulge and parts of the disk. ...
Determining the Origin of Inner Planetary System Debris Orbiting the
... 2. Transient or Steady-state Dust Production? To classify systems with terrestrial planet-zone dust into these two regimes − an active planetesimal belt or giant impacts − we begin with the assumption that all inner planetary system dust disks are the product of collisions of numerous small rocky bo ...
... 2. Transient or Steady-state Dust Production? To classify systems with terrestrial planet-zone dust into these two regimes − an active planetesimal belt or giant impacts − we begin with the assumption that all inner planetary system dust disks are the product of collisions of numerous small rocky bo ...
Descriptions For Posters
... building-block stars have long since burned out, and are now just dying embers. But contained within these dead stars, called white dwarfs, is the early history of our galaxy, providing clues on how it came to be. Cassiopoeia A Cassiopeia A is a supernova remnant at distance 11,000 light-years in ou ...
... building-block stars have long since burned out, and are now just dying embers. But contained within these dead stars, called white dwarfs, is the early history of our galaxy, providing clues on how it came to be. Cassiopoeia A Cassiopeia A is a supernova remnant at distance 11,000 light-years in ou ...
AJAstroProject
... million ly away. • It is in the same group as M95 (Previous) and M96 not photographed. • In this exposure you can see two other galaxies, NGC3384 and NGC3379. • NGC3384 is in the Leo Group I and NGC3379 is a more distant galaxy. This was a 90sec exposure through the V-filter. ...
... million ly away. • It is in the same group as M95 (Previous) and M96 not photographed. • In this exposure you can see two other galaxies, NGC3384 and NGC3379. • NGC3384 is in the Leo Group I and NGC3379 is a more distant galaxy. This was a 90sec exposure through the V-filter. ...
Galaxies
... is 200,000 light years across! It was named ‘little cloud’ by the Persian astronomer Abdal-Rahman-al-Sufi in 964 AD and is one of the local group of galaxies. ...
... is 200,000 light years across! It was named ‘little cloud’ by the Persian astronomer Abdal-Rahman-al-Sufi in 964 AD and is one of the local group of galaxies. ...
Habitable Planets Webquest
... http://science.howstuffworks.com/44484-bad-universe-goldilocks-zone-video.htm and answer this question: 1. What happens to the “planet” as it’s moved around the solar system? Step 8 : Search “What Makes a Planer Habitable” from BBC or open up: http://www.bbc.com/news/scienceenvironment-33929851 Answ ...
... http://science.howstuffworks.com/44484-bad-universe-goldilocks-zone-video.htm and answer this question: 1. What happens to the “planet” as it’s moved around the solar system? Step 8 : Search “What Makes a Planer Habitable” from BBC or open up: http://www.bbc.com/news/scienceenvironment-33929851 Answ ...
Chapter 23 The Milky Way Galaxy
... rather than as structures made up of particular stars, may be understood using a traffic jam as an analogy. The jam persists even though particular cars move in and out of it, and it can persist long after the event that triggered it is over. ...
... rather than as structures made up of particular stars, may be understood using a traffic jam as an analogy. The jam persists even though particular cars move in and out of it, and it can persist long after the event that triggered it is over. ...
Chapter 9 / Adobe Acrobat Document
... to those aboard the shuttle—seven astronauts died during the Challenger launch disaster and another seven astronauts died when Columbia broke up on re-entry. 28. Hubble and Humason’s distance-redshift relationship: the universe’s expansion has been confirmed by observations at very large distances a ...
... to those aboard the shuttle—seven astronauts died during the Challenger launch disaster and another seven astronauts died when Columbia broke up on re-entry. 28. Hubble and Humason’s distance-redshift relationship: the universe’s expansion has been confirmed by observations at very large distances a ...
Slide 1
... move compared to distance, we get line “B”. The fact that all the stars go the same speed explains why the spiral arms don’t twist up, but it doesn’t make sense. According to physics, the speeds should be following line “A”. Something is making the stars move too fast and we don’t know what it is! ...
... move compared to distance, we get line “B”. The fact that all the stars go the same speed explains why the spiral arms don’t twist up, but it doesn’t make sense. According to physics, the speeds should be following line “A”. Something is making the stars move too fast and we don’t know what it is! ...
Jura et al. 2004 - Department of Physics and Astronomy
... template spectrum (Cohen et al 2003), and averaged the resulting spectra from corresponding nod positions. We plot the resulting spectra of our targets with IR excesses in Figure 1. Based upon comparisons of IRS spectra of non-variable calibration sources to ground-based, IRAS, and Spitzer IRAC flux ...
... template spectrum (Cohen et al 2003), and averaged the resulting spectra from corresponding nod positions. We plot the resulting spectra of our targets with IR excesses in Figure 1. Based upon comparisons of IRS spectra of non-variable calibration sources to ground-based, IRAS, and Spitzer IRAC flux ...
Goal: To understand the structure and makeup of our own Milky Way
... • However we can observe radial velocity! • How? By using the Doppler effect! • When an object moves towards us, the wavelengths of light it emits (or sound on earth) decrease (because the object is closer to us when the wave finishes than when it starts – so the shrink in the wave is the distance t ...
... • However we can observe radial velocity! • How? By using the Doppler effect! • When an object moves towards us, the wavelengths of light it emits (or sound on earth) decrease (because the object is closer to us when the wave finishes than when it starts – so the shrink in the wave is the distance t ...
lecture25
... Dust is generated in the late stages of low and high mass stars, when carbon and silicon is dredged up from the cores and ejected in stellar winds, planetary nebulae, and possibly supernova remnants. The blocking of visible light by dust is called dust extinction. ...
... Dust is generated in the late stages of low and high mass stars, when carbon and silicon is dredged up from the cores and ejected in stellar winds, planetary nebulae, and possibly supernova remnants. The blocking of visible light by dust is called dust extinction. ...