Jason T. Wright Roger Griffith, Steinn Sigurðsson Matthew Povich
... If a civilization uses energy, that energy must emerge as waste heat in the mid-infrared A civilization using most of its star’s energy would have little optical luminosity but be a very bright infrared source. This approach is totally general: any energy use by a civilization would give a star a mi ...
... If a civilization uses energy, that energy must emerge as waste heat in the mid-infrared A civilization using most of its star’s energy would have little optical luminosity but be a very bright infrared source. This approach is totally general: any energy use by a civilization would give a star a mi ...
Detection Technique for Artificially-Illuminated Objects in the Outer
... to millions of seconds or more, at the faint end of the magnitude range under consideration. However, the motivation to determine the nature and properties of an object showing convincing α = −2 behavior would be even more extreme. A complementary follow-up search for artificial radio signals could ...
... to millions of seconds or more, at the faint end of the magnitude range under consideration. However, the motivation to determine the nature and properties of an object showing convincing α = −2 behavior would be even more extreme. A complementary follow-up search for artificial radio signals could ...
Lecture 39: Life in the Universe The Main Point Simple Life vs
... the search towards more complex life forms, and ultimately ones that are intelligent? Astro 102/104 ...
... the search towards more complex life forms, and ultimately ones that are intelligent? Astro 102/104 ...
Shouting in the Jungle: the SETI Transmission Debate
... press, Drake [2] was laying the groundwork to perform, from NRAO Green Bank WV, the very investigation that Cocconi and Morrison were proposing. The two authors, and the lone investigator, had no knowledge of one another, but had arrived independently at the same basic experimental design, suggestin ...
... press, Drake [2] was laying the groundwork to perform, from NRAO Green Bank WV, the very investigation that Cocconi and Morrison were proposing. The two authors, and the lone investigator, had no knowledge of one another, but had arrived independently at the same basic experimental design, suggestin ...
An Opportunistic Search for ExtraTerrestrial Intelligence (SETI) with
... established in 1978 and has evolved considerably since then (Werthimer et al. 2001). The SERENDIP program also gave rise to projects such as SETI@home (Korpela et al. 2009) and Southern SERENDIP (Stootman et al. 2000), a survey conducted using the Parkes radio telescope. A novel targeted search usin ...
... established in 1978 and has evolved considerably since then (Werthimer et al. 2001). The SERENDIP program also gave rise to projects such as SETI@home (Korpela et al. 2009) and Southern SERENDIP (Stootman et al. 2000), a survey conducted using the Parkes radio telescope. A novel targeted search usin ...
The Scale of the Cosmos
... a huge change in humans’ worldview, akin to Galileo’s discovery that the moons of Jupiter do not go around the Earth. • Some turmoil would inevitably result. ...
... a huge change in humans’ worldview, akin to Galileo’s discovery that the moons of Jupiter do not go around the Earth. • Some turmoil would inevitably result. ...
Intelligent Life in the Milky Way Galaxy
... to the size of the U.S. - - How far away is the nearest habitable planet? ...
... to the size of the U.S. - - How far away is the nearest habitable planet? ...
Communication with Extraterrestrial Intelligence (CETI)
... 38, and 68 AU, far from the star. The reflex motions of a star that are induced by the planetary orbit are greater and easier to observe if the star mass is small. What we haven’t found thus far is a planet like the Earth orbiting its star at just the right distance so that its surface temperature mi ...
... 38, and 68 AU, far from the star. The reflex motions of a star that are induced by the planetary orbit are greater and easier to observe if the star mass is small. What we haven’t found thus far is a planet like the Earth orbiting its star at just the right distance so that its surface temperature mi ...
A105 Stars and Galaxies
... Looking for SIGNALS is the easiest way We can also transmit a signal (but it’s a long wait for the answer...) Different kinds of signals to listen for: local communication signals: on Earth, this includes TV, radio, etc. communication between the planet and another site, such as satellites and ...
... Looking for SIGNALS is the easiest way We can also transmit a signal (but it’s a long wait for the answer...) Different kinds of signals to listen for: local communication signals: on Earth, this includes TV, radio, etc. communication between the planet and another site, such as satellites and ...
Document
... referring to “our” units (e.g. meters) •”Intergalactic” frequency standard based on temperature of cosmic background radiation? •Many others have been suggested. Too many! None in use today. ...
... referring to “our” units (e.g. meters) •”Intergalactic” frequency standard based on temperature of cosmic background radiation? •Many others have been suggested. Too many! None in use today. ...
Document
... actively broadcasting its presence to the rest of the galaxy. At what frequency should we listen for such an extraterrestrial beacon? • The constituents of water (which is thought to be necessary for life), H atoms and OH molecules, radiate near 18 and 20 cm (radio wavelengths). Radio wavelengths in ...
... actively broadcasting its presence to the rest of the galaxy. At what frequency should we listen for such an extraterrestrial beacon? • The constituents of water (which is thought to be necessary for life), H atoms and OH molecules, radiate near 18 and 20 cm (radio wavelengths). Radio wavelengths in ...
Why SETI will Fail
... intelligent aliens in our solar system is strong evidence that they do not exist anywhere in our region of the Milky Way and SETI searches of nearby stars are destined to fail. ...
... intelligent aliens in our solar system is strong evidence that they do not exist anywhere in our region of the Milky Way and SETI searches of nearby stars are destined to fail. ...
“Contact” Movie Notes
... Just before Ellie is dropped out of the machine, she sees a group of shiny lights shooting across the sky. What do you think this could be? _________________________________________________________________________ ...
... Just before Ellie is dropped out of the machine, she sees a group of shiny lights shooting across the sky. What do you think this could be? _________________________________________________________________________ ...
Paul Lunn: Sonification Techniques for Astronomical Data Exploration
... ne = Number of planets that can support life fl = fraction of planets which have life fi = fraction of planets where life is intelligent fc = fraction of planets where life has developed ability to communicate over stellar distances L = average lifetime of technological civilisation (SETI League, 20 ...
... ne = Number of planets that can support life fl = fraction of planets which have life fi = fraction of planets where life is intelligent fc = fraction of planets where life has developed ability to communicate over stellar distances L = average lifetime of technological civilisation (SETI League, 20 ...
Document
... the data for weak signals… To tease out the weakest signals, a great amount of computer power is necessary. This is where SETI@home comes in. By combining the power of hundreds of thousands of PCs on the internet, SETI researchers hope to discover elusive signals that SERENDIP's quick look approach ...
... the data for weak signals… To tease out the weakest signals, a great amount of computer power is necessary. This is where SETI@home comes in. By combining the power of hundreds of thousands of PCs on the internet, SETI researchers hope to discover elusive signals that SERENDIP's quick look approach ...
here - York University
... • Frank Drake mounted the first SETI search • July 1960, 85 foot radio telescope at Green Bank in West Virginia • Searched at a wavelength of 21 cm. • Tau Ceti and Epsilon Eridani were targets ...
... • Frank Drake mounted the first SETI search • July 1960, 85 foot radio telescope at Green Bank in West Virginia • Searched at a wavelength of 21 cm. • Tau Ceti and Epsilon Eridani were targets ...
Astrobiology and the Biological Universe
... • Need an expert group, funded over a period of years, to study response problem and give advice to the President (Tatel) • IAA group? ...
... • Need an expert group, funded over a period of years, to study response problem and give advice to the President (Tatel) • IAA group? ...
SETI
... • Sending a spaceship is too slow (25,000 mph = 11 km/s). – 300,000 years to reach the nearest star ...
... • Sending a spaceship is too slow (25,000 mph = 11 km/s). – 300,000 years to reach the nearest star ...
Search for extraterrestrial intelligence
The search for extraterrestrial intelligence (SETI) is the collective name for scientific activities undertaken to search for intelligent extraterrestrial life. For example, electromagnetic radiation is monitored for signs of transmissions from civilizations on other worlds.There are great challenges in searching the universe for signs of intelligent life, including their identification and interpretation. As various SETI projects have progressed, some have criticized early claims by researchers as being too ""euphoric"".Scientific investigation of the potential phenomenon began shortly after the advent of radio in the early 1900s. Focused international efforts to answer a variety of scientific questions have been going on since the 1980s. More recently, Stephen Hawking, British physicist, and Yuri Milner, Russian billionaire, along with the SETI Institute, announced a well-funded effort, called the Breakthrough Initiatives, to expand efforts to search for extraterrestrial life.