Introduction: - TrevorMander.com
... The closer to the poles you get (the greater the latitude), the greater the seasonal temperature effect of the tilt of the Earth, and the lower the sun will appear in the sky. Day and night is 6 months long at the poles. “The sun at the North Pole is continuously above the horizon during the summer ...
... The closer to the poles you get (the greater the latitude), the greater the seasonal temperature effect of the tilt of the Earth, and the lower the sun will appear in the sky. Day and night is 6 months long at the poles. “The sun at the North Pole is continuously above the horizon during the summer ...
Lab 2: An OpenGL Solar System
... creating OpenGL contexts and windows, dealing with keyboard and mouse input, and creating simple menus. It also contains a number of functions that draw simple geometrical primitives, such as sphere, cube, cone, and torus. GLUT and its corresponding documentation are available at http://www.opengl.o ...
... creating OpenGL contexts and windows, dealing with keyboard and mouse input, and creating simple menus. It also contains a number of functions that draw simple geometrical primitives, such as sphere, cube, cone, and torus. GLUT and its corresponding documentation are available at http://www.opengl.o ...
Global Warming Fall 2013 Building Up the nth
... distance of the planet from the star is roughly the same as the distance between the Earth and the Sun (i.e. 1 A.U.). The dominant things that affect L are the star’s luminosity, which is dependent on the temperature of the star, the radius of the star, and the distance between the star and the plan ...
... distance of the planet from the star is roughly the same as the distance between the Earth and the Sun (i.e. 1 A.U.). The dominant things that affect L are the star’s luminosity, which is dependent on the temperature of the star, the radius of the star, and the distance between the star and the plan ...
Astronomy - Troop 179
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
iaf2001_paper (doc - 1.8 MB)
... transits against stellar activity (very chromatic events). So, a 3 colors dispersion device is placed in front of the exoplanets CCD matrices and will enable, after analyzing the signal chromatic variations, to widen the detection domain to cases where the observation window is not long enough to sh ...
... transits against stellar activity (very chromatic events). So, a 3 colors dispersion device is placed in front of the exoplanets CCD matrices and will enable, after analyzing the signal chromatic variations, to widen the detection domain to cases where the observation window is not long enough to sh ...
Vedic Cosmography and Astronomy 1
... that Vaiñëavas have traditionally made use of the astronomical siddhäntas and that both Çréla Prabhupäda and Çréla Bhaktisiddhänta Sarasvaté Öhäkura have referred to them. At the same time, we have pointed out that the authors of the astronomical siddhäntas, such as Bhäskaräcärya, have been unable t ...
... that Vaiñëavas have traditionally made use of the astronomical siddhäntas and that both Çréla Prabhupäda and Çréla Bhaktisiddhänta Sarasvaté Öhäkura have referred to them. At the same time, we have pointed out that the authors of the astronomical siddhäntas, such as Bhäskaräcärya, have been unable t ...
Homework #2 1. There are two ways to estimate the energy carried
... according to your criterion from a). Recall that the luminosity of a fully convective star is L ≈ 0.2L (M/M )4/7 (R/R )2 . In lecture we showed that moderately massive stars become radiative well before they reach the main sequence. c) Does the transition from convective to radiative first happen ...
... according to your criterion from a). Recall that the luminosity of a fully convective star is L ≈ 0.2L (M/M )4/7 (R/R )2 . In lecture we showed that moderately massive stars become radiative well before they reach the main sequence. c) Does the transition from convective to radiative first happen ...
Powerpoint slides - Earth, Planetary, and Space Sciences
... Chemistry and Composition • At low temperatures characteristic of outer solar system, kinetics may mean C remains as CO not CH4 (see Week 1) – means less oxygen available to form water ice • Predicted rock/ice mass ratio in this case is 70/30 – which gives a density of ~2000 kg m-3, similar to that ...
... Chemistry and Composition • At low temperatures characteristic of outer solar system, kinetics may mean C remains as CO not CH4 (see Week 1) – means less oxygen available to form water ice • Predicted rock/ice mass ratio in this case is 70/30 – which gives a density of ~2000 kg m-3, similar to that ...
Chapter 11
... a. About 40 weeks. b. About 30,000 years. c. About 30 million years. d. About 1 billion years. e. About 5 billion years. ...
... a. About 40 weeks. b. About 30,000 years. c. About 30 million years. d. About 1 billion years. e. About 5 billion years. ...
Prospects for detection of protoplanets
... • By an age of 300 Myr the dust masses were found to by decreased by at least 2 orders of magnitude (Zuckerman & Becklin 1993). • Based on studies with the Infrared Space Observatory (ISO), the disk fraction amounts to much less than 10% for stars with ages > 1 Gyr (e.g., Spangler et al. 2001; Habin ...
... • By an age of 300 Myr the dust masses were found to by decreased by at least 2 orders of magnitude (Zuckerman & Becklin 1993). • Based on studies with the Infrared Space Observatory (ISO), the disk fraction amounts to much less than 10% for stars with ages > 1 Gyr (e.g., Spangler et al. 2001; Habin ...
AST1100 Lecture Notes
... planets which are orbiting closer to their mother star. Still, about 360 planets orbiting other stars have been detected (by fall 2009). The reason for this can be found in the previous lecture: In a starplanet system, the planet and the star are orbiting their common center of mass. Thus, the star ...
... planets which are orbiting closer to their mother star. Still, about 360 planets orbiting other stars have been detected (by fall 2009). The reason for this can be found in the previous lecture: In a starplanet system, the planet and the star are orbiting their common center of mass. Thus, the star ...
Longevity of moons around habitable planets
... orbital angular velocity. In other words, Earth’s day becomes longer and longer until 1 day equals 1 Earth’s year. The system at that point is in the planet–star synchronous state. Meanwhile, the Moon starts spiralling inward. As the Moon is spiralling inward, the tidal torque due to the Moon become ...
... orbital angular velocity. In other words, Earth’s day becomes longer and longer until 1 day equals 1 Earth’s year. The system at that point is in the planet–star synchronous state. Meanwhile, the Moon starts spiralling inward. As the Moon is spiralling inward, the tidal torque due to the Moon become ...
Slides - CIERA
... • Debris disk ! At 8.5 pc, the 5th closest one to the Sun • ~20x as much cool material as our Kuiper Belt • Dust model temps 47-120 K • Dust-free gap interior to 4 AU; Suggests room for additional planets in the 0.5-4 AU region 13 Sep 2011 ...
... • Debris disk ! At 8.5 pc, the 5th closest one to the Sun • ~20x as much cool material as our Kuiper Belt • Dust model temps 47-120 K • Dust-free gap interior to 4 AU; Suggests room for additional planets in the 0.5-4 AU region 13 Sep 2011 ...
Astronomical Circumstances
... This DRAFT document is an excerpt from Principles of Planetary Biology, by Tom E. Morris. based on their brightness (magnitude), temperature, receive each moment, so the warmer the planet will get radius, luminosity, mix of colors (spectral class), and (all other things being equal). This being the ...
... This DRAFT document is an excerpt from Principles of Planetary Biology, by Tom E. Morris. based on their brightness (magnitude), temperature, receive each moment, so the warmer the planet will get radius, luminosity, mix of colors (spectral class), and (all other things being equal). This being the ...
Biosignatures and Planetary Properties to be
... opportunity for detailed studies that is not possible when we make explorations outside the Solar System. But the compensating advantages of studies beyond the Solar System are the greater diversities of both of environment and of stages of development that are available for investigation. Secondly, ...
... opportunity for detailed studies that is not possible when we make explorations outside the Solar System. But the compensating advantages of studies beyond the Solar System are the greater diversities of both of environment and of stages of development that are available for investigation. Secondly, ...
October 2014 - Newbury Astronomical Society
... the star. Later this sequence was found to be wrong. However the class letters for each kind of star were retained but now they are not in alphabetical order. A star like our Sun will spend a few million years in its very active pre-main sequence phase then settle into its normal life. The luminosit ...
... the star. Later this sequence was found to be wrong. However the class letters for each kind of star were retained but now they are not in alphabetical order. A star like our Sun will spend a few million years in its very active pre-main sequence phase then settle into its normal life. The luminosit ...
Unit 11: Astronomy
... You are going on a road trip. Graph 1 shows how the position of your car changes with time. On this graph, the starting point of the trip is represented by the point (0,0). 1. What information is represented on the y (vertical) axis of the graph? 2. What information is represented on the x (horizont ...
... You are going on a road trip. Graph 1 shows how the position of your car changes with time. On this graph, the starting point of the trip is represented by the point (0,0). 1. What information is represented on the y (vertical) axis of the graph? 2. What information is represented on the x (horizont ...
Eyeing the retina nebula
... Planetary nebulae play a key role in recycling these materials throughout the universe. Without them rocky planets like the Earth and carbon-based life forms like us would not exist. The image of the Retina Nebula has been enhanced to dramatize its beauty. The difference in brightness between the ce ...
... Planetary nebulae play a key role in recycling these materials throughout the universe. Without them rocky planets like the Earth and carbon-based life forms like us would not exist. The image of the Retina Nebula has been enhanced to dramatize its beauty. The difference in brightness between the ce ...
Chapter 7 Formation of Stars
... Formation of Stars Substantial direct and indirect information indicates that stars are born in the clouds of gas and dust that we call nebulae. • Basics are well understood, many details are not. • We shall have to gloss over various sticky points with assumptions that will be justified by the obse ...
... Formation of Stars Substantial direct and indirect information indicates that stars are born in the clouds of gas and dust that we call nebulae. • Basics are well understood, many details are not. • We shall have to gloss over various sticky points with assumptions that will be justified by the obse ...
Chapter 8 Formation of Stars
... Formation of Stars Substantial direct and indirect information indicates that stars are born in the clouds of gas and dust that we call nebulae. • Basics are well understood, many details are not. • We shall have to gloss over various sticky points with assumptions that will be justified by the obse ...
... Formation of Stars Substantial direct and indirect information indicates that stars are born in the clouds of gas and dust that we call nebulae. • Basics are well understood, many details are not. • We shall have to gloss over various sticky points with assumptions that will be justified by the obse ...
Predicting Sky Dome Appearance on Earth
... that no man had yet set foot in is an effort probably as old as our species. It certainly dates as far back as antiquity, with Pliny the Elder writing, apparently not from first hand knowledge, about the strange inhabitants of faraway countries: both headless and dog-headed men were featured in his ...
... that no man had yet set foot in is an effort probably as old as our species. It certainly dates as far back as antiquity, with Pliny the Elder writing, apparently not from first hand knowledge, about the strange inhabitants of faraway countries: both headless and dog-headed men were featured in his ...
We Are Made of Stardust
... For stars, there is a price to be paid for creativity: The more kinds of atoms created, the shorter-lived the star. Only the chemically laconic are long-lived. The reason pertains to gravity and how gravity determines the extent and pace of nuclear fusion. The more mass (more hydrogen) that a star b ...
... For stars, there is a price to be paid for creativity: The more kinds of atoms created, the shorter-lived the star. Only the chemically laconic are long-lived. The reason pertains to gravity and how gravity determines the extent and pace of nuclear fusion. The more mass (more hydrogen) that a star b ...
The Celestial Sphere - University of North Texas
... distant hill ... • … but if you move through the house and take a photo out of ...
... distant hill ... • … but if you move through the house and take a photo out of ...
relative size and distance
... • Based on the Earth's orbit around the Sun. • Ecliptic is the plane of the Earth's orbit projected on to the celestial sphere. – The 12 zodiac constellations are located in a band following the ecliptic. – The Sun, Moon, and planets are found on or near the ecliptic. – The ecliptic is tilted 23.5o ...
... • Based on the Earth's orbit around the Sun. • Ecliptic is the plane of the Earth's orbit projected on to the celestial sphere. – The 12 zodiac constellations are located in a band following the ecliptic. – The Sun, Moon, and planets are found on or near the ecliptic. – The ecliptic is tilted 23.5o ...
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently. On 4 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. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.