Exoplanet Discoveries and the Fermi Paradox
... 1960s, which stated that the number of intelligence species in the galaxy is the product of 7 factors, from the rate of star formation through the probabilities of planets, habitability, life arising, communicating civilizations developing, and their expected lifetimes. Drake concluded that the numb ...
... 1960s, which stated that the number of intelligence species in the galaxy is the product of 7 factors, from the rate of star formation through the probabilities of planets, habitability, life arising, communicating civilizations developing, and their expected lifetimes. Drake concluded that the numb ...
AST 301 Fall 2007 AST 301: Review for Exam 3 This exam covers
... Of the numerous extrasolar planets that have been discovered, what are some of the surprising results? They are nearly all massive (e.g. like Jupiter or larger)—was this a surprise? Explain. More lower-mass planets with larger periods have been discovered as more time has elapsed since the first dis ...
... Of the numerous extrasolar planets that have been discovered, what are some of the surprising results? They are nearly all massive (e.g. like Jupiter or larger)—was this a surprise? Explain. More lower-mass planets with larger periods have been discovered as more time has elapsed since the first dis ...
What theories account for the origin of the solar system?
... Surface of Venus can not be seen directly from Earth because of its dense cloud cover. ...
... Surface of Venus can not be seen directly from Earth because of its dense cloud cover. ...
Volume 19 Issue 1 – January/February 2017 Edition
... ery in 1604 of the inverse square law of light intensity [1]. Kepler proposed light spreads out from a point, and that its intensity decreases the farther it travels from its source [4]. An illustra on of this is that Jupiter being about five mes more distant from the Sun than the Earth is, eac ...
... ery in 1604 of the inverse square law of light intensity [1]. Kepler proposed light spreads out from a point, and that its intensity decreases the farther it travels from its source [4]. An illustra on of this is that Jupiter being about five mes more distant from the Sun than the Earth is, eac ...
Solar Observing in Schools Citizen Science with Zooniverse
... PlanetHunters shows data from the Kepler space mission, and is designed for you to try and identify when planets transit in front of their star, causing a dip in brightness. Let’s begin! The first step is to go to www.zooniverse.org and register to create a username. Once you have created a username ...
... PlanetHunters shows data from the Kepler space mission, and is designed for you to try and identify when planets transit in front of their star, causing a dip in brightness. Let’s begin! The first step is to go to www.zooniverse.org and register to create a username. Once you have created a username ...
Lecture 09
... • A transit is when a planet crosses in front of a star. • The resulting eclipse reduces the star’s apparent brightness and tells us the planet’s radius. • The duration of the dip tells us the radius of the star. • The duration of the downward\upward slopes tell us the radius of the planet. • The pl ...
... • A transit is when a planet crosses in front of a star. • The resulting eclipse reduces the star’s apparent brightness and tells us the planet’s radius. • The duration of the dip tells us the radius of the star. • The duration of the downward\upward slopes tell us the radius of the planet. • The pl ...
Stars: radius and mass
... How to measure the size of star? • Light from single source will produce an interference pattern if passed through two slits. • The interference pattern for two sources, or one extended source, will be smeared out. By accurately measuring the interference pattern caused by combining the light from ...
... How to measure the size of star? • Light from single source will produce an interference pattern if passed through two slits. • The interference pattern for two sources, or one extended source, will be smeared out. By accurately measuring the interference pattern caused by combining the light from ...
p - INAF-OAT Trieste Users site
... Planets in the HZ of early-type stars require several years of observations, but these planets are less interesting from the point of view of astrobiology, because of the relatively fast evolution of the stellar luminosity, which limits the continuous habitability (required for life to evolve into c ...
... Planets in the HZ of early-type stars require several years of observations, but these planets are less interesting from the point of view of astrobiology, because of the relatively fast evolution of the stellar luminosity, which limits the continuous habitability (required for life to evolve into c ...
Planetary Taxonomy
... Quantifying roundness Roundness is almost never directly observable. U i mass or size Using i as a proxy yields i ld inconsistent i i results. l The degree of roundness is a continuum and shows no clear transition. transition A taxonomy based on roundness is highly problematic. We can tolerate some ...
... Quantifying roundness Roundness is almost never directly observable. U i mass or size Using i as a proxy yields i ld inconsistent i i results. l The degree of roundness is a continuum and shows no clear transition. transition A taxonomy based on roundness is highly problematic. We can tolerate some ...
The definition of a planet - the Solar System Support Pages
... detached from the rest of the bodies of their neighboring zones. Given the powerful gravitational fields of these massive bodies - that we can call at this stage protoplanets - they were able to clean the population that had close encounters with them. The bodies interacting with the protoplanets we ...
... detached from the rest of the bodies of their neighboring zones. Given the powerful gravitational fields of these massive bodies - that we can call at this stage protoplanets - they were able to clean the population that had close encounters with them. The bodies interacting with the protoplanets we ...
KIC 10449976: discovery of an extreme helium
... Best-fitting atmospheric parameters for KIC 10449976 were established by interpolation in a grid of synthetic spectra computed from a grid of line-blanketed model atmospheres computed in local thermodynamic, hydrostatic and radiative equilibrium. The grid covers a wide range in effective temperature ...
... Best-fitting atmospheric parameters for KIC 10449976 were established by interpolation in a grid of synthetic spectra computed from a grid of line-blanketed model atmospheres computed in local thermodynamic, hydrostatic and radiative equilibrium. The grid covers a wide range in effective temperature ...
ppt
... Most transiting planets tend to be inflated. Approximately 68% of all transiting planets have radii larger than 1.1 RJup. ...
... Most transiting planets tend to be inflated. Approximately 68% of all transiting planets have radii larger than 1.1 RJup. ...
ncam-program-2016 - Cline Observatory
... air showers are modulated by the cooling of the atmosphere under the umbra. The cooling would reduce the height of the main production layer of the nuclear component. Thus the shower produces fewer muons that would decay to electron-positron pairs, and this would result in a reduction of in the subs ...
... air showers are modulated by the cooling of the atmosphere under the umbra. The cooling would reduce the height of the main production layer of the nuclear component. Thus the shower produces fewer muons that would decay to electron-positron pairs, and this would result in a reduction of in the subs ...
Habitable worlds with JWST: transit spectroscopy of the TRAPPIST
... Detailed chemical modelling of all three planets will be necessary prior to JWST observations to determine whether observable signatures are likely, as this will be an important consideration for time allocation commitees. Approximately 30 transits with each instrument are needed to detect O3 on TRA ...
... Detailed chemical modelling of all three planets will be necessary prior to JWST observations to determine whether observable signatures are likely, as this will be an important consideration for time allocation commitees. Approximately 30 transits with each instrument are needed to detect O3 on TRA ...
Probeseiten 2 PDF
... conclusion: were Ceres and Pallas perhaps fragments of a former planet? Could that explain why they were so small? And were there other fragments waiting to be discovered in this part of the solar system? It was indeed curious that, even in the most powerful of telescopes, the new celestial objects ...
... conclusion: were Ceres and Pallas perhaps fragments of a former planet? Could that explain why they were so small? And were there other fragments waiting to be discovered in this part of the solar system? It was indeed curious that, even in the most powerful of telescopes, the new celestial objects ...
Possibilities for life elsewhere in the Solar System In our fifth
... are typically at least tens of times farther away from us, putting this beyond the reach of almost all current day telescopes. The second problem is that stars are vastly brighter than planets. Recalling that planets shine by reflected light instead of by their own energy, the Earth would appear abo ...
... are typically at least tens of times farther away from us, putting this beyond the reach of almost all current day telescopes. The second problem is that stars are vastly brighter than planets. Recalling that planets shine by reflected light instead of by their own energy, the Earth would appear abo ...
What theory best explains the features of our
... found in 1111 planetary systems Data complete as of May 14, 2014 ...
... found in 1111 planetary systems Data complete as of May 14, 2014 ...
Planets orbiting stars more massive than the Sun
... noise-level of CoRoT is 80 ppm, 110 ppm, 200 ppm and 280 ppm for a a single 3 h transit for stars of 11.5, 12.5, 13.5, and 14.5 mag, respectively (Auvergne et al. 2009). Since we are only interested in short-period planets with the size of Jupiter, the noise-levels are about 16, 22, 40, 56 ppm, if w ...
... noise-level of CoRoT is 80 ppm, 110 ppm, 200 ppm and 280 ppm for a a single 3 h transit for stars of 11.5, 12.5, 13.5, and 14.5 mag, respectively (Auvergne et al. 2009). Since we are only interested in short-period planets with the size of Jupiter, the noise-levels are about 16, 22, 40, 56 ppm, if w ...
Quiz on Solar System study guide with key `16-17
... Write the name of the small solar system object or part of a comet that best matches the statement. 1. ___________________ A small object from space that hits the surface of the Earth. 2. ___________________ Large rocky objects orbiting the sun that range in size from less than 1 km to over 300 km. ...
... Write the name of the small solar system object or part of a comet that best matches the statement. 1. ___________________ A small object from space that hits the surface of the Earth. 2. ___________________ Large rocky objects orbiting the sun that range in size from less than 1 km to over 300 km. ...
Lecture 34: Habitable Zones around Stars
... A likely place to look for life is on rocky planets in the Habitable Zones of low-mass Main Sequence stars. Brighter stars have wider Habitable Zones further away from the star. Planets in Habitable Zones close to their parent stars can become tidally locked. Low-mass M stars experience violent supe ...
... A likely place to look for life is on rocky planets in the Habitable Zones of low-mass Main Sequence stars. Brighter stars have wider Habitable Zones further away from the star. Planets in Habitable Zones close to their parent stars can become tidally locked. Low-mass M stars experience violent supe ...
Universe Now - Course Pages of Physics Department
... – Earth-mass planets are starting to become observable only now. – First direct imaging of an exoplanet orbiting a normal star in ...
... – Earth-mass planets are starting to become observable only now. – First direct imaging of an exoplanet orbiting a normal star in ...
The Mt John University Observatory search for Earth
... Abstract: The ‘holy grail’ in planet hunting is the detection of an Earth-analogue: a planet with similar mass as the Earth and an orbit inside the habitable zone. If we can find such an Earth-analogue around one of the stars in the immediate solar neighbourhood, we could potentially even study it in ...
... Abstract: The ‘holy grail’ in planet hunting is the detection of an Earth-analogue: a planet with similar mass as the Earth and an orbit inside the habitable zone. If we can find such an Earth-analogue around one of the stars in the immediate solar neighbourhood, we could potentially even study it in ...
Kepler (spacecraft)
Kepler is a space observatory launched by NASA to discover Earth-like planets orbiting other stars. The spacecraft, named after the German Renaissance astronomer Johannes Kepler, was launched on March 7, 2009.Designed to survey a portion of our region of the Milky Way to discover dozens of Earth-size extrasolar planets in or near the habitable zone and estimate how many of the billions of stars in the Milky Way have such planets, Kepler's sole instrument is a photometer that continually monitors the brightness of over 145,000 main sequence stars in a fixed field of view. This data is transmitted to Earth, then analyzed to detect periodic dimming caused by extrasolar planets that cross in front of their host star.Kepler is part of NASA's Discovery Program of relatively low-cost, focused primary science missions. The telescope's construction and initial operation were managed by NASA's Jet Propulsion Laboratory, with Ball Aerospace responsible for developing the Kepler flight system. The Ames Research Center is responsible for the ground system development, mission operations since December 2009, and scientific data analysis. The initial planned lifetime was 3.5 years, but greater-than-expected noise in the data, from both the stars and the spacecraft, meant additional time was needed to fulfill all mission goals. Initially, in 2012, the mission was expected to last until 2016, but this would only have been possible if all remaining reaction wheels used for pointing the spacecraft remained reliable. On May 11, 2013, a second of four reaction wheels failed, disabling the collection of science data and threatening the continuation of the mission.On August 15, 2013, NASA announced that they had given up trying to fix the two failed reaction wheels. This meant the current mission needed to be modified, but it did not necessarily mean the end of planet-hunting. NASA had asked the space science community to propose alternative mission plans ""potentially including an exoplanet search, using the remaining two good reaction wheels and thrusters"". On November 18, 2013, the K2 ""Second Light"" proposal was reported. This would include utilizing the disabled Kepler in a way that could detect habitable planets around smaller, dimmer red dwarfs. On May 16, 2014, NASA announced the approval of the K2 extension.As of January 2015, Kepler and its follow-up observations had found 1,013 confirmed exoplanets in about 440 stellar systems, along with a further 3,199 unconfirmed planet candidates. Four planets have been confirmed through Kepler 's K2 mission. In November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. It is estimated that 11 billion of these planets may be orbiting Sun-like stars. The nearest such planet may be 3.7 parsecs (12 ly) away, according to the scientists.On January 6, 2015, NASA announced the 1000th confirmed exoplanet discovered by the Kepler Space Telescope. Four of the newly confirmed exoplanets were found to orbit within habitable zones of their related stars: three of the four, Kepler-438b, Kepler-442b and Kepler-452b, are near-Earth-size and likely rocky; the fourth, Kepler-440b, is a super-Earth.