cosmological horizon
... we cannot receive any information from beyond our horizon rhorizon = c/H0 = 4300 Mpc (assuming H0 = 70 km/s/Mpc) ...
... we cannot receive any information from beyond our horizon rhorizon = c/H0 = 4300 Mpc (assuming H0 = 70 km/s/Mpc) ...
The Universe - Smithsonian Education
... and how far away are the planets and stars? How did they form and when? How do they move and why? Finding answers to those questions has been the highest adventure of the human mind, and yet the questions, in essence, are those of any child looking into the sky. The lessons in this issue address the ...
... and how far away are the planets and stars? How did they form and when? How do they move and why? Finding answers to those questions has been the highest adventure of the human mind, and yet the questions, in essence, are those of any child looking into the sky. The lessons in this issue address the ...
The Milky Way Galaxy
... • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is ...
... • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is ...
E:\2012-2013\SSU\PHS 207spring 2013\3rd test 4
... 1. Why are Cepheid variable stars important in our study of the Milky Way galaxy? By monitoring a Cepheid star its distance from us can be calculated. Since we assume that nearly all the stars in a cluster are nearly the same age, we can determine the cluster’s age and distance ad some range of the ...
... 1. Why are Cepheid variable stars important in our study of the Milky Way galaxy? By monitoring a Cepheid star its distance from us can be calculated. Since we assume that nearly all the stars in a cluster are nearly the same age, we can determine the cluster’s age and distance ad some range of the ...
The Solar System and our Universe
... • This theory, suggests that all the matter & energy in the Universe must have compressed into a very small space. • Then it exploded & started expanding. • The expansion is still occurring. • The current rare of expansion of the Universe to estimate its age • The estimate might not be very accurate ...
... • This theory, suggests that all the matter & energy in the Universe must have compressed into a very small space. • Then it exploded & started expanding. • The expansion is still occurring. • The current rare of expansion of the Universe to estimate its age • The estimate might not be very accurate ...
Study Guide Ch10,11 and 12
... 10. Describe the different types of active galaxies, and the mechanisms proposed to explain their energy output and other characteristics. 11. Briefly relate the story of the discovery of quasars 12. Describe the current explanation of quasars and their energy sources. ...
... 10. Describe the different types of active galaxies, and the mechanisms proposed to explain their energy output and other characteristics. 11. Briefly relate the story of the discovery of quasars 12. Describe the current explanation of quasars and their energy sources. ...
LIGO Star Chart
... the northern hemisphere. No telescope is necessary but the sky should be dark. This activity will show you how to locate several features of the night sky. The Big Dipper is the easiest group of stars to identify and can point you in the direction of other interesting areas of the sky. ...
... the northern hemisphere. No telescope is necessary but the sky should be dark. This activity will show you how to locate several features of the night sky. The Big Dipper is the easiest group of stars to identify and can point you in the direction of other interesting areas of the sky. ...
Focus On Middle School Astronomy Student
... has a “belt” of three bright stars in a straight row. Once the “belt” is located, it is easy to find the “club” and “shield” by looking for neighboring stars. ...
... has a “belt” of three bright stars in a straight row. Once the “belt” is located, it is easy to find the “club” and “shield” by looking for neighboring stars. ...
Chapter 1 Our Place in the Universe
... • The Milky Way is one of about 100 billion galaxies. • 1011 stars/galaxy x 1011 galaxies = 1022 stars ...
... • The Milky Way is one of about 100 billion galaxies. • 1011 stars/galaxy x 1011 galaxies = 1022 stars ...
ppt-file 2.4 MB
... Water worlds make a splash as the best hope for alien life QUIRIN SCHIERMEIER [MUNICH] Kevin Costner's 1995 film Waterworld might have flopped at the box office, but researchers think that real water worlds — Earth-sized planets predominantly covered by oceans — are more likely than land-covered pl ...
... Water worlds make a splash as the best hope for alien life QUIRIN SCHIERMEIER [MUNICH] Kevin Costner's 1995 film Waterworld might have flopped at the box office, but researchers think that real water worlds — Earth-sized planets predominantly covered by oceans — are more likely than land-covered pl ...
cont. - UNLV Physics
... B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see." C. Because looking 15 billion light-years away means looking to a time before the universe existed." ...
... B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see." C. Because looking 15 billion light-years away means looking to a time before the universe existed." ...
Patterns in the Sky - Madison Public Schools
... Our Sun moves randomly relative to the other stars in the local solar neighborhood… • typical relative speeds of more than 70,000 km/hr • but stars are so far away that we cannot easily notice ...
... Our Sun moves randomly relative to the other stars in the local solar neighborhood… • typical relative speeds of more than 70,000 km/hr • but stars are so far away that we cannot easily notice ...
Galaxy Far Far Away ppt
... HALO: Area surrounding galaxy that contains some scattered globular clusters. DISK: Contains most of the stars in the galaxy. ...
... HALO: Area surrounding galaxy that contains some scattered globular clusters. DISK: Contains most of the stars in the galaxy. ...
Astronomy Review revised Key
... 23. If the star is located 4.3 light years away, how long will it be before we see the light of the star? 4.4 years. 18. What is the Big Bang Theory? The theory that all matter was once condensed into a single point called the singularity, and that singularity exploded sending matter out in all dir ...
... 23. If the star is located 4.3 light years away, how long will it be before we see the light of the star? 4.4 years. 18. What is the Big Bang Theory? The theory that all matter was once condensed into a single point called the singularity, and that singularity exploded sending matter out in all dir ...
24_Testbank - Lick Observatory
... cloud through gravitational encounters. This is good news because it means that life on the inner planets can evolve without sterilizing giant impacts. The bad news is that if a star does not blow away its surrounding disk of gas and dust soon enough, giant planets may experience drag and migrate in ...
... cloud through gravitational encounters. This is good news because it means that life on the inner planets can evolve without sterilizing giant impacts. The bad news is that if a star does not blow away its surrounding disk of gas and dust soon enough, giant planets may experience drag and migrate in ...
PLANETS OF THE DOUBLE SUN - Space Frontier Foundation
... unable to form as a result of Jupiter's gravity. We don't have enough knowledge of this process to determine just how much the presence of a companion star can disrupt the formation of planets over an entire system; the best we can do right now is try to see if we can find any planets that might exi ...
... unable to form as a result of Jupiter's gravity. We don't have enough knowledge of this process to determine just how much the presence of a companion star can disrupt the formation of planets over an entire system; the best we can do right now is try to see if we can find any planets that might exi ...
ISP 205: Visions of the Universe
... • How big is the Milky Way galaxy? – It would take more than 3,000 years to count the stars in the Milky Way Galaxy at a rate of one per second, and they are spread across 100,000 light-years ...
... • How big is the Milky Way galaxy? – It would take more than 3,000 years to count the stars in the Milky Way Galaxy at a rate of one per second, and they are spread across 100,000 light-years ...
The Milky Way – A Classic Galaxy
... light variation to show them as Cepheids • Therefore, this was not a nearby nebula around a new star, it was an entire galaxy. • Herschel’s map then could be seen as a map of our own Milky Way Galaxy ...
... light variation to show them as Cepheids • Therefore, this was not a nearby nebula around a new star, it was an entire galaxy. • Herschel’s map then could be seen as a map of our own Milky Way Galaxy ...
Ch. 21 notes-1
... Explain the big bang theory of how the universe was formed. Describe how the solar system was formed. Introduction Andromeda Galaxy is the most distant object you can see with your unaided eye. Light travels for 2 million years before reaching your eye. Moving Galaxies To study how and when the ...
... Explain the big bang theory of how the universe was formed. Describe how the solar system was formed. Introduction Andromeda Galaxy is the most distant object you can see with your unaided eye. Light travels for 2 million years before reaching your eye. Moving Galaxies To study how and when the ...
Unit 2 - WordPress.com
... A star is a bright ball of very hot gases. The Sun is the nearest star to Earth. The next nearest star to Earth is Proxima Centaure. It is 4.2 light years away. This means it takes 4.2 light years for the light from this start to reach Earth. It would take 75,000 years to visit this star in a spaces ...
... A star is a bright ball of very hot gases. The Sun is the nearest star to Earth. The next nearest star to Earth is Proxima Centaure. It is 4.2 light years away. This means it takes 4.2 light years for the light from this start to reach Earth. It would take 75,000 years to visit this star in a spaces ...
The human race has made great strides in the last few centuries
... By the time that a microsecond has passed after the Big Bang, our physics is in better shape and our models have made remarkable and verifiable predications. We view the Universe as an expanding ball of hot plasma in thermal equilibrium with small density variations imprinted from quantum phenomena ...
... By the time that a microsecond has passed after the Big Bang, our physics is in better shape and our models have made remarkable and verifiable predications. We view the Universe as an expanding ball of hot plasma in thermal equilibrium with small density variations imprinted from quantum phenomena ...
Lecture15_v1 - Lick Observatory
... • organic molecules are found throughout the Solar System and Galaxy • geological evidence suggests life on Earth arose as soon as it was possible ...
... • organic molecules are found throughout the Solar System and Galaxy • geological evidence suggests life on Earth arose as soon as it was possible ...
Time
... Like the Egyptians (who have 12 months of 30 days), they complete the year by adding 5 extra days at the end - days which are considered to be extremely unlucky for any undertaking. An unusual aspect of the Mayan system is the Calendar Round, a 52-year cycle in which no two days have the same name. ...
... Like the Egyptians (who have 12 months of 30 days), they complete the year by adding 5 extra days at the end - days which are considered to be extremely unlucky for any undertaking. An unusual aspect of the Mayan system is the Calendar Round, a 52-year cycle in which no two days have the same name. ...
Kepler 186f - Forum Skylive
... search for planets around M dwarfs that are nearby to us. The James Webb Space Telescope (JWST) will probe the atmospheres of these planets for biomarkers, which are chemical imprints of the signs of life that are detectable from a planets’ atmosphere. Since 2012, the SETI Institute’s Allen Telescop ...
... search for planets around M dwarfs that are nearby to us. The James Webb Space Telescope (JWST) will probe the atmospheres of these planets for biomarkers, which are chemical imprints of the signs of life that are detectable from a planets’ atmosphere. Since 2012, the SETI Institute’s Allen Telescop ...
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?""