Life in the Universe
... If one is restricted to going no faster than the speed of light, then interstellar travel will be difficult. In any event, vast new energy sources must be used to propel a ship. Hydrogen scoopers. Nuclear bombs or nuclear power Matter-antimater. ...
... If one is restricted to going no faster than the speed of light, then interstellar travel will be difficult. In any event, vast new energy sources must be used to propel a ship. Hydrogen scoopers. Nuclear bombs or nuclear power Matter-antimater. ...
Document
... • Estimated number of technological civilizations present in the Milky Way galaxy is given by the average rate of star formation fraction of stars having planetary systems average number of planets within the habitable zone for various types of star and star system fraction of habitable planet ...
... • Estimated number of technological civilizations present in the Milky Way galaxy is given by the average rate of star formation fraction of stars having planetary systems average number of planets within the habitable zone for various types of star and star system fraction of habitable planet ...
Slide 1
... The planet has amass of 0.69 that of Jupiter, but its diameter is 1.32 times larger than that of Jupiter. The planet orbit is 0.047 AU from the star and is very hot : surface temperature of ...
... The planet has amass of 0.69 that of Jupiter, but its diameter is 1.32 times larger than that of Jupiter. The planet orbit is 0.047 AU from the star and is very hot : surface temperature of ...
C472 Continuous Assessment: Essay #2
... believed to have killed the dinosaurs on Earth, would likely destroy the more complex forms of life. In the case of the Earth, Jupiter is thought to have acted to remove the asteroids in this solar system, allowing for a reduced terrestrial collision rate which increased the opportunity for evolutio ...
... believed to have killed the dinosaurs on Earth, would likely destroy the more complex forms of life. In the case of the Earth, Jupiter is thought to have acted to remove the asteroids in this solar system, allowing for a reduced terrestrial collision rate which increased the opportunity for evolutio ...
Lecture L24 ASTB21
... Surprising answer emerged recently: none of the above. It was probably RNA! Whole life could have started with RNA (and proteins), which evolved into DNA. This idea is called an “RNA world” hypothesis. ...
... Surprising answer emerged recently: none of the above. It was probably RNA! Whole life could have started with RNA (and proteins), which evolved into DNA. This idea is called an “RNA world” hypothesis. ...
The distance that light travels in a year is 9.5 trillion km. The
... The distance that light travels in a year is 9.5 trillion km. The brightest star in the sky, Sirius, is almost 9 light years away. How long does it take light to travel from Sirius to Earth? ...
... The distance that light travels in a year is 9.5 trillion km. The brightest star in the sky, Sirius, is almost 9 light years away. How long does it take light to travel from Sirius to Earth? ...
here - Just A Theory
... aside, there is no scientific evidence that we have ever been visited by an alien civilisation. The reason why could lie in just how vast space is. Our nearest star system Alpha Centauri, 4.3 light years away, at the speed of Voyager it would take 80,000 years to reach.[9] Nothing humanity has ever ...
... aside, there is no scientific evidence that we have ever been visited by an alien civilisation. The reason why could lie in just how vast space is. Our nearest star system Alpha Centauri, 4.3 light years away, at the speed of Voyager it would take 80,000 years to reach.[9] Nothing humanity has ever ...
“Life Beyond Earth” Video Questions
... 3. The Voyager I/II probes launched in the year __________ each carry a ____________________ to communicate with other species. Traveling 50 times faster than a jet fighter, they should reach the next star in ____________________ years. 4. What invention developed in China and Italy has made space ...
... 3. The Voyager I/II probes launched in the year __________ each carry a ____________________ to communicate with other species. Traveling 50 times faster than a jet fighter, they should reach the next star in ____________________ years. 4. What invention developed in China and Italy has made space ...
Starchtpg for PDF 2010 bw.indd
... transmissions. In 1974 we sent our first, largely symbolic, message aimed at the Great Cluster in Hercules, 25,000 light-years away. A response will take a very long time unless it is detected by someone in a much closer star system. There have been some false alarms, but so far the search has been ...
... transmissions. In 1974 we sent our first, largely symbolic, message aimed at the Great Cluster in Hercules, 25,000 light-years away. A response will take a very long time unless it is detected by someone in a much closer star system. There have been some false alarms, but so far the search has been ...
The Scale of the Cosmos
... • Furthermore, in early 2011, the Kepler Mission space telescope discovered numerous Earth like planets, many of which are orbiting within habitable zones around their stars : • zones where liquid water may exist thanks to ...
... • Furthermore, in early 2011, the Kepler Mission space telescope discovered numerous Earth like planets, many of which are orbiting within habitable zones around their stars : • zones where liquid water may exist thanks to ...
The eleventh annual AST poster session - Home
... CONTINUES ON YOUR COMPUTER One thought that has been on humans minds since we first started looking to sky was if we are alone in the universe. Instead of just sitting and waiting for a visitor to come to our planet to answer the question, U.C. Berkeley started recording radio transmissions from spa ...
... CONTINUES ON YOUR COMPUTER One thought that has been on humans minds since we first started looking to sky was if we are alone in the universe. Instead of just sitting and waiting for a visitor to come to our planet to answer the question, U.C. Berkeley started recording radio transmissions from spa ...
Our Galaxy and the Universe
... • the galaxy we live in is called the Milky Way. It is 100,000 LY across and contains about 300 billion stars. ...
... • the galaxy we live in is called the Milky Way. It is 100,000 LY across and contains about 300 billion stars. ...
Why SETI will Fail
... origin of galaxies, stars, elements, planets => origin of life => chemical and biological evolution => technological intelligence ...
... origin of galaxies, stars, elements, planets => origin of life => chemical and biological evolution => technological intelligence ...
Monday Sept 14
... the planets, moons, and other objects and materials that orbit that star. Until very recently, there was only one known planetary system Even though many People suspected that most stars had planets orbiting them, we had no scientific evidence to support this suspicion. The one planetary science we ...
... the planets, moons, and other objects and materials that orbit that star. Until very recently, there was only one known planetary system Even though many People suspected that most stars had planets orbiting them, we had no scientific evidence to support this suspicion. The one planetary science we ...
SETI: First Considerations (PowerPoint)
... Don’t assume that flife = 0.5 (a 50:50 chance), in the hopes of being “unbiassed.” That’s rather like saying “I have a 50:50 chance of winning the lottery: either I will, or I won’t.” flife is probably very close to zero (with very rare exceptions!) or very close to unity. But we don’t know which it ...
... Don’t assume that flife = 0.5 (a 50:50 chance), in the hopes of being “unbiassed.” That’s rather like saying “I have a 50:50 chance of winning the lottery: either I will, or I won’t.” flife is probably very close to zero (with very rare exceptions!) or very close to unity. But we don’t know which it ...
AST 150: Radioactive Dating Game Activity
... and ants intelligent? Furthermore, single-‐celled life existed on Earth very early, and multicellular life took 2.5 billion years to form. Maybe the development of complex life, let alone intelligent life, ...
... and ants intelligent? Furthermore, single-‐celled life existed on Earth very early, and multicellular life took 2.5 billion years to form. Maybe the development of complex life, let alone intelligent life, ...
Hypothesis vs. Theory ~The Big Bang
... but the idea comes from logical assumptions. In attempting to answer a question about the nature of the world, a scientist will form a hypothesis (or a guess) regarding the question's answer. ...
... but the idea comes from logical assumptions. In attempting to answer a question about the nature of the world, a scientist will form a hypothesis (or a guess) regarding the question's answer. ...
Physics 2028: Great Ideas in Science: The Exobiology
... Global Warming: This is a slower civilization demise event taking a century or two to severely affect the human population (or extraterrestrial populations if they experienced such a phenomenon). Since this topic was discussed last semester, we won’t list the details of this problem here. ...
... Global Warming: This is a slower civilization demise event taking a century or two to severely affect the human population (or extraterrestrial populations if they experienced such a phenomenon). Since this topic was discussed last semester, we won’t list the details of this problem here. ...
Study Guide for Quiz on Astronomy: The Moon, Sun and Stars
... 4. Is a light-year a unit of time? Explain. ______________Why?____________________________. 5. At what point in the evolution of a star is the star actually born? 6. What is Hubble’s law? 7. The most common chemical element in a star is? ___________________ 8. If a star dies and explodes, it becomes ...
... 4. Is a light-year a unit of time? Explain. ______________Why?____________________________. 5. At what point in the evolution of a star is the star actually born? 6. What is Hubble’s law? 7. The most common chemical element in a star is? ___________________ 8. If a star dies and explodes, it becomes ...
Astronomy Miscellaneous Items Test
... Answer the following questions. Answer in complete sentences, but answer succinctly. Remember: You must pass with 80% to receive credit for this section. This test is worth 3 points 1. What calendar do we use now, on a day-to-day basis? 2. The keeping of time accurately is very important to astronom ...
... Answer the following questions. Answer in complete sentences, but answer succinctly. Remember: You must pass with 80% to receive credit for this section. This test is worth 3 points 1. What calendar do we use now, on a day-to-day basis? 2. The keeping of time accurately is very important to astronom ...
PHYSICS DEPARTMENT Syllabus: Phys 200 (3 cr
... Our Living Earth Structure of the Earth’s atmosphere (greenhouse effect, ozone layers). Earth’s magnetosphere. Structure of the Earth’s interior. ...
... Our Living Earth Structure of the Earth’s atmosphere (greenhouse effect, ozone layers). Earth’s magnetosphere. Structure of the Earth’s interior. ...
Extra-Solar Planets
... the fraction of civilizations that communicate the fraction of the star’s life that the civilization exists ...
... the fraction of civilizations that communicate the fraction of the star’s life that the civilization exists ...
P1_Physics_Summary_Topic_3
... • The formation of our universe • The search for Aliens • Lifecycle of stars ...
... • The formation of our universe • The search for Aliens • Lifecycle of stars ...
Lesson 1- Space
... • Probes- Scan with X-rays, microwaves and other forms of light. Take lots and lots of pictures • Math and Logic- We can determine the distance and size of objects using observation and calculation ...
... • Probes- Scan with X-rays, microwaves and other forms of light. Take lots and lots of pictures • Math and Logic- We can determine the distance and size of objects using observation and calculation ...
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?""