Student Text, pp. 278-284
... (b) We can apply the Sun’s constant found in (a) to this situation. C S 3.355 1018 m3/s2 T 8.1 107 s ...
... (b) We can apply the Sun’s constant found in (a) to this situation. C S 3.355 1018 m3/s2 T 8.1 107 s ...
PowerPoint
... Formation of OUR Solar System? • Looks like a supernova explosion nearby may have done the job… Probably a type II high-mass star supernova, from the relative abundances of elements in meteorites. • Blast wave compresses interstellar cloud, and the debris of that explosion is contained in the first ...
... Formation of OUR Solar System? • Looks like a supernova explosion nearby may have done the job… Probably a type II high-mass star supernova, from the relative abundances of elements in meteorites. • Blast wave compresses interstellar cloud, and the debris of that explosion is contained in the first ...
ph709-09
... Earth's. It is possible from this to exclude that the planet is made purely of iron, but other compositions, including a predominantly rocky one, are possible. [1] It orbits very close to its star with an orbital period of 20 hours. The star, in the constellation Monoceros, is 150 parsecs (490 ly) a ...
... Earth's. It is possible from this to exclude that the planet is made purely of iron, but other compositions, including a predominantly rocky one, are possible. [1] It orbits very close to its star with an orbital period of 20 hours. The star, in the constellation Monoceros, is 150 parsecs (490 ly) a ...
How to Become a Planet Hunter-Careers in
... How Much Wobble? It can be measured with an accuracy of about 1 μas (quite a bit thinner than the line plotted here). “The wobble effect”: our Solar System as seen at 10 pc distance ...
... How Much Wobble? It can be measured with an accuracy of about 1 μas (quite a bit thinner than the line plotted here). “The wobble effect”: our Solar System as seen at 10 pc distance ...
TCI_Paper2_ConditionsForLife
... naturally would have different CHZ’s than the Sun, with those of larger stars occurring farther away than that of the Sun and those of smaller stars occurring closer. It is important to note that habitable zones are affected by solar evolution. All stars increase in luminosity during their lifetime ...
... naturally would have different CHZ’s than the Sun, with those of larger stars occurring farther away than that of the Sun and those of smaller stars occurring closer. It is important to note that habitable zones are affected by solar evolution. All stars increase in luminosity during their lifetime ...
Question 1 (7-5 thru 7-7 PPT Questions)
... largest planet formed around a star is directly related to the star’s size. 4. Theoretical work supports observations suggesting that 25% of Sun-like stars have planetary systems. 5. It is too early for us to reach conclusions on the possibility of life existing on one or more exoplanets. Future mis ...
... largest planet formed around a star is directly related to the star’s size. 4. Theoretical work supports observations suggesting that 25% of Sun-like stars have planetary systems. 5. It is too early for us to reach conclusions on the possibility of life existing on one or more exoplanets. Future mis ...
February 2007
... Planet Finder Telescope • “The Automated Planet Finder Telescope is optimized specifically for the Doppler detection of planets having masses 5 to 20 times that of Earth. Such planets would likely be rocky with atmospheres, and able to retain water. The 2.4meter, robotic, telescope will be dedicated ...
... Planet Finder Telescope • “The Automated Planet Finder Telescope is optimized specifically for the Doppler detection of planets having masses 5 to 20 times that of Earth. Such planets would likely be rocky with atmospheres, and able to retain water. The 2.4meter, robotic, telescope will be dedicated ...
PDF version - Caltech Astronomy
... What about understanding? What good was it to discover quasars or gamma-ray bursts if you didn’t understand the physical processes at work? Genuine astrophysical understanding required a completely different set of tools: theoretical tools. Isaac Newton’s discoveries of the laws of motion and gravit ...
... What about understanding? What good was it to discover quasars or gamma-ray bursts if you didn’t understand the physical processes at work? Genuine astrophysical understanding required a completely different set of tools: theoretical tools. Isaac Newton’s discoveries of the laws of motion and gravit ...
Which Objects Represent the Eight Planets in Our
... new, scientifically accepted definition of the word, “planet”. According to these scientists, a planet must have three characteristics: a) It must orbit a Star (Sun) b) It must have enough mass for its self-gravity to form it into a spherical shape c) It must have “cleared” nearby objects away from ...
... new, scientifically accepted definition of the word, “planet”. According to these scientists, a planet must have three characteristics: a) It must orbit a Star (Sun) b) It must have enough mass for its self-gravity to form it into a spherical shape c) It must have “cleared” nearby objects away from ...
The History of Astronomy
... (nature of motion): Galileo’s experiments showed that objects in air would stay with a moving Earth. • Aristotle thought that all objects naturally come to rest. • Galileo showed that objects will stay in motion unless a force acts to slow them down (Newton’s first law of motion). • The planets COUL ...
... (nature of motion): Galileo’s experiments showed that objects in air would stay with a moving Earth. • Aristotle thought that all objects naturally come to rest. • Galileo showed that objects will stay in motion unless a force acts to slow them down (Newton’s first law of motion). • The planets COUL ...
Polaris – Distance to Pole
... Kepler relies on Tycho’s data quality … And from this such small difference of 8 minutes of arc it is clear why Ptolemy , … accepted a fixed Equant point. ... For Ptolemy set out that he actually did not get below 10 minutes of arc … in making observations. To us, on whom Divine benevolence has bes ...
... Kepler relies on Tycho’s data quality … And from this such small difference of 8 minutes of arc it is clear why Ptolemy , … accepted a fixed Equant point. ... For Ptolemy set out that he actually did not get below 10 minutes of arc … in making observations. To us, on whom Divine benevolence has bes ...
Why is it so difficult to detect planets around other stars? Planet
... the Sun with spectral lines that are slightly redshifted then slightly blueshifted with a repeating period of 16 months—what could you ...
... the Sun with spectral lines that are slightly redshifted then slightly blueshifted with a repeating period of 16 months—what could you ...
Intelligent Life in the Milky Way Galaxy
... No robotic probes orbiting Solar System No Radio Signals from aliens, despite radio telescopes. Some aliens will wander in the Galaxy, ...
... No robotic probes orbiting Solar System No Radio Signals from aliens, despite radio telescopes. Some aliens will wander in the Galaxy, ...
The search for Earth-like planets - Creation Ministries International
... extrasolar planets. Kepler has only recently undergone initial tests by aiming it at a known extrasolar planet whose star is called HAT-P-7. Scientists are quite excited by the high quality data that will be available from Kepler. Initial tests show the spacecraft is working quite well. The Kepler s ...
... extrasolar planets. Kepler has only recently undergone initial tests by aiming it at a known extrasolar planet whose star is called HAT-P-7. Scientists are quite excited by the high quality data that will be available from Kepler. Initial tests show the spacecraft is working quite well. The Kepler s ...
Santos: On the relation between stars and their planets
... A word of caution Different groups can obtain very different stellar parameters (e.g. Smiljanic et al. 2014) ...
... A word of caution Different groups can obtain very different stellar parameters (e.g. Smiljanic et al. 2014) ...
Exoplanet, 51 Pegasi b, Solar System, VLT, La Silla. ESOcast
... richest planetary system yet. The system, located over 120 light-years away around the Sun-like star HD 10180, contains at least five exoplanets. There is also tantalising evidence that two more planets may be present in this system, one of which would have the lowest mass ever found. ...
... richest planetary system yet. The system, located over 120 light-years away around the Sun-like star HD 10180, contains at least five exoplanets. There is also tantalising evidence that two more planets may be present in this system, one of which would have the lowest mass ever found. ...
Biology: Unit One Calendar
... Compare the radiative and connective zones of the sun. Describe the three layers of the sun’s atmosphere. (1e) Section 29.2 Solar Activity Explain how sunspots are related to powerful magnetic fields on the sun.(IE.1i) Compare the prominences, solar flares, and coronal mass ejections. (1e) ...
... Compare the radiative and connective zones of the sun. Describe the three layers of the sun’s atmosphere. (1e) Section 29.2 Solar Activity Explain how sunspots are related to powerful magnetic fields on the sun.(IE.1i) Compare the prominences, solar flares, and coronal mass ejections. (1e) ...
ASTRONOMY 110G Review Questions for
... Which observation, invention, experiment, or discovery of Galileo proved that the Ptolemaic System had to be incorrect. Prior to this, what was the strongest observational indication favoring the Copernican view? The Ptolemaic view? Where on Earth are all stars visible at one time or another? Where ...
... Which observation, invention, experiment, or discovery of Galileo proved that the Ptolemaic System had to be incorrect. Prior to this, what was the strongest observational indication favoring the Copernican view? The Ptolemaic view? Where on Earth are all stars visible at one time or another? Where ...
α Cen A + iodine cell spectrum - Department of Physics and Astronomy
... by Guedes et al. for α CenB. All simulations yield 1 to 4 Earth-mass planets of which 42% lie inside the star’s habitable zone (dashed lines). The planetary configuration of the solar system is shown for reference. Starting conditions: N lunar-mass bodies in a disk with 1/a surface density. ...
... by Guedes et al. for α CenB. All simulations yield 1 to 4 Earth-mass planets of which 42% lie inside the star’s habitable zone (dashed lines). The planetary configuration of the solar system is shown for reference. Starting conditions: N lunar-mass bodies in a disk with 1/a surface density. ...
Search for Other Worlds - Science fiction 20 years
... tiny circular or elliptical orbit around the common center of mass. Finding Earth-mass planets by astrometry requires sub-microarcsecond precision. Because the motion of the star is so small, this method has not yet been very productive at detecting exoplanets. ‘In the near term, astrometric accurac ...
... tiny circular or elliptical orbit around the common center of mass. Finding Earth-mass planets by astrometry requires sub-microarcsecond precision. Because the motion of the star is so small, this method has not yet been very productive at detecting exoplanets. ‘In the near term, astrometric accurac ...
AST 301 Fall 2007 Review for Exam 3 This exam covers only
... This exam covers only chapters 6 and 15, the solar system and its formation, NOT chapter 16 (the Sun), which we don’t have time to cover in class and so will postpone. Suggested end-of-chapter and online questions were sent to you by email and are available at the class website. Chapter 6: There are ...
... This exam covers only chapters 6 and 15, the solar system and its formation, NOT chapter 16 (the Sun), which we don’t have time to cover in class and so will postpone. Suggested end-of-chapter and online questions were sent to you by email and are available at the class website. Chapter 6: There are ...
Two Dissipating Exoplanet Atmospheres Taken from: Hubble
... easily lost in the glow of the much brighter stars they circle. Exoplanets were first detected by the small but recognizably cyclic gravitational tug they exert on their stars. Sensitive spectroscopy can measure the tiny changes such a planet induces in its star’s velocity. Once astronomers have est ...
... easily lost in the glow of the much brighter stars they circle. Exoplanets were first detected by the small but recognizably cyclic gravitational tug they exert on their stars. Sensitive spectroscopy can measure the tiny changes such a planet induces in its star’s velocity. Once astronomers have est ...
AN INTRODUCTION TO ASTRONOMY Dr. Uri Griv Department of Physics, Ben-Gurion University
... along with a brief explanation written by a professional astronomer. 2001 October 4 ...
... along with a brief explanation written by a professional astronomer. 2001 October 4 ...
What did ancient civilizations achieve in astronomy?
... • Still could not detect stellar parallax, and thus still thought Earth must be at center of solar system (but recognized that other planets go around Sun) • Hired Kepler, who used Tycho s observations to discover the truth about planetary motion. ...
... • Still could not detect stellar parallax, and thus still thought Earth must be at center of solar system (but recognized that other planets go around Sun) • Hired Kepler, who used Tycho s observations to discover the truth about planetary motion. ...
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.