Planetary motion - Inside Mines
... • In the case of a satellite to be launched into space, the mass m of the satellite is obviously much smaller than the mass of the Earth M⊕. • Hence, the center of gravity of the system is located at the Earth center, and the relative motion really describe the trajectory of the satellite. • Recall ...
... • In the case of a satellite to be launched into space, the mass m of the satellite is obviously much smaller than the mass of the Earth M⊕. • Hence, the center of gravity of the system is located at the Earth center, and the relative motion really describe the trajectory of the satellite. • Recall ...
Word Document - Montana State University Extended
... life has existed on the Earth for about the last 500 million years. It is still unclear exactly what chain of events lead up to the emergence of complex life on this planet. One of the factors that scientists believe to be necessary is a long period of relatively stable climate resulting from a stab ...
... life has existed on the Earth for about the last 500 million years. It is still unclear exactly what chain of events lead up to the emergence of complex life on this planet. One of the factors that scientists believe to be necessary is a long period of relatively stable climate resulting from a stab ...
Figueira, Pont, Mordasini, Alibert, Georgy, Benz
... arXiv:0904.2979v1 [astro-ph.EP] 20 Apr 2009 ...
... arXiv:0904.2979v1 [astro-ph.EP] 20 Apr 2009 ...
Today`s Powerpoint
... Luminosity = (energy radiated per cm2 per sec) x (area of surface in cm2) So: Luminosity (temperature) 4 x (surface area) Determine luminosity from apparent brightness and distance, determine temperature from spectrum (black-body curve or spectral lines), then find surface area, then find radius ( ...
... Luminosity = (energy radiated per cm2 per sec) x (area of surface in cm2) So: Luminosity (temperature) 4 x (surface area) Determine luminosity from apparent brightness and distance, determine temperature from spectrum (black-body curve or spectral lines), then find surface area, then find radius ( ...
Solutions to Homework #4, AST 203, Spring 2012
... the admonition to set the context of your solution. Thus take the point off if relevant symbols aren’t defined, if important steps of explanation are missing, etc. If the answer is written down without *any* context whatsoever, take off 1/3 of the points. One point off per question for inappropriate ...
... the admonition to set the context of your solution. Thus take the point off if relevant symbols aren’t defined, if important steps of explanation are missing, etc. If the answer is written down without *any* context whatsoever, take off 1/3 of the points. One point off per question for inappropriate ...
Astronomy Talk July 2016 - Unitarian Universalist Church of
... Years away. That means that any kind of electromagnetic radiation (light, X-rays, radio waves) would take 12 years to san the distance one-way. So right about now they should be catching the last season of “Friends” and the first season of “House.” If our solar system is not that unusual, there ough ...
... Years away. That means that any kind of electromagnetic radiation (light, X-rays, radio waves) would take 12 years to san the distance one-way. So right about now they should be catching the last season of “Friends” and the first season of “House.” If our solar system is not that unusual, there ough ...
The Stability of Exomoons in the Habitable Zone
... In the investigation into the habitability of extrasolar objects, the main focus has long been on exoplanets, while exomoons have only been considered properly during the last few years. A reason for this is the obvious difficulty in detecting objects that do not primarily orbit a star, but rather a ...
... In the investigation into the habitability of extrasolar objects, the main focus has long been on exoplanets, while exomoons have only been considered properly during the last few years. A reason for this is the obvious difficulty in detecting objects that do not primarily orbit a star, but rather a ...
Ch 28 Class Notes
... A small star grouping, or sub-grouping of a constellation is called an _____________________. We are familiar with the constellation known as Ursa Major (the Great Bear). Within _____________________________ is the Big Dipper. The Big Dipper is an asterism in the shape of a dipper and handle. The tw ...
... A small star grouping, or sub-grouping of a constellation is called an _____________________. We are familiar with the constellation known as Ursa Major (the Great Bear). Within _____________________________ is the Big Dipper. The Big Dipper is an asterism in the shape of a dipper and handle. The tw ...
Doppler Effect Demo
... that are close to the Milky Way actually move toward us and are blue-shifted. However, all galaxies beyond a certain distance are red-shifted. Is it possible to see any planets orbiting other stars? As of the time of this writing (August 2002) no planets have been directly observed. Most extra-solar ...
... that are close to the Milky Way actually move toward us and are blue-shifted. However, all galaxies beyond a certain distance are red-shifted. Is it possible to see any planets orbiting other stars? As of the time of this writing (August 2002) no planets have been directly observed. Most extra-solar ...
Astronomy Assignment #1
... The diameter of Alpha Centauri A is 1.71 x 109 meters. The Sun’s diameter is 1.39 x 109 meters as determined from the table in the text’s appendix. Thus, Alpha Centauri A is slightly larger than the Sun with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than A ...
... The diameter of Alpha Centauri A is 1.71 x 109 meters. The Sun’s diameter is 1.39 x 109 meters as determined from the table in the text’s appendix. Thus, Alpha Centauri A is slightly larger than the Sun with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than A ...
The quick brown fox jumps over the lazy dog
... Story ends on a sobering note that will resonate in some Ray Bradbury stories later: 'The Martian astronomers -- for there are astronomers on Mars, although they are very different beings from men -- were naturally profoundly interested by these things. They saw them from their own standpoint of cou ...
... Story ends on a sobering note that will resonate in some Ray Bradbury stories later: 'The Martian astronomers -- for there are astronomers on Mars, although they are very different beings from men -- were naturally profoundly interested by these things. They saw them from their own standpoint of cou ...
Galaxies and Stars
... 66. Base your answer to the following question on the diagram below, which shows an inferred sequence in which our solar system formed from a giant interstellar cloud of gas and debris. Stage A shows the collapse of the gas cloud, stage B shows its flattening, and stage C shows the sequence that le ...
... 66. Base your answer to the following question on the diagram below, which shows an inferred sequence in which our solar system formed from a giant interstellar cloud of gas and debris. Stage A shows the collapse of the gas cloud, stage B shows its flattening, and stage C shows the sequence that le ...
Where are small bodies in the solar system?
... Florida Benchmarks • SC.8.E.5.3 Distinguish the hierarchical relationships between planets and other astronomical bodies relative to solar system, galaxy, and universe, including distance, size, and composition. • SC.8.E.5.7 Compare and contrast the properties of objects in the Solar System includin ...
... Florida Benchmarks • SC.8.E.5.3 Distinguish the hierarchical relationships between planets and other astronomical bodies relative to solar system, galaxy, and universe, including distance, size, and composition. • SC.8.E.5.7 Compare and contrast the properties of objects in the Solar System includin ...
Space and Technology
... • When the ball of particles gets hot enough, hydrogen gas will begin changing into ______ helium ________ and a large amount of energy ______ will be released long • Stars live a extremely _____ time – but not forever • __________ - an explosion that occurs at the supernova end of a stars life – pa ...
... • When the ball of particles gets hot enough, hydrogen gas will begin changing into ______ helium ________ and a large amount of energy ______ will be released long • Stars live a extremely _____ time – but not forever • __________ - an explosion that occurs at the supernova end of a stars life – pa ...
Astrology
... • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about celebrities: – 10% correct, 90% incorrect ...
... • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about celebrities: – 10% correct, 90% incorrect ...
Astrology
... • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about celebrities: – 10% correct, 90% incorrect ...
... • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about celebrities: – 10% correct, 90% incorrect ...
Astrology
... • Sun sign compatibility? No correlation with 3000 couples marrying or 500 divorcing. • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about cel ...
... • Sun sign compatibility? No correlation with 3000 couples marrying or 500 divorcing. • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about cel ...
Exercises
... ii. Calculate the fractional amount of mass converted into energy by hydrogen fusion. (Refer to Table 1 for the mass of a proton and of a helium nucleus.) iii. Derive an expression for the nuclear timescale in solar units, i.e. expressed in terms of R/R , M/M and L/L . iv. Use the mass-radius and ...
... ii. Calculate the fractional amount of mass converted into energy by hydrogen fusion. (Refer to Table 1 for the mass of a proton and of a helium nucleus.) iii. Derive an expression for the nuclear timescale in solar units, i.e. expressed in terms of R/R , M/M and L/L . iv. Use the mass-radius and ...
Astro 204: Practice Questions Some of these questions are a bit
... 19. A bright star is observed to orbit a supermassive black hole in a circular orbit with a period of 20 years. The orbital plane is inclined with respect to the plane of the sky by 30◦ . Observations of various lines in the stellar spectrum show that the maximum line-of-sight velocity exhibited by ...
... 19. A bright star is observed to orbit a supermassive black hole in a circular orbit with a period of 20 years. The orbital plane is inclined with respect to the plane of the sky by 30◦ . Observations of various lines in the stellar spectrum show that the maximum line-of-sight velocity exhibited by ...
– 1 – 1. Historical Notes for Ay 123 1.1.
... with an amplitude of 0.5 milliarcsec (mas), while an Earth-like planet would have a wobble of only 0.3 mas. This is very small and impossible to measure without use of interferometry in space. The figure below, from planetquest.jpl.nasa.gov/science/finding planets.cfm, shows the result from a model ...
... with an amplitude of 0.5 milliarcsec (mas), while an Earth-like planet would have a wobble of only 0.3 mas. This is very small and impossible to measure without use of interferometry in space. The figure below, from planetquest.jpl.nasa.gov/science/finding planets.cfm, shows the result from a model ...
AP Physics Multiple Choice Practice – Gravitation 1. Each of five
... 32. A planet has a radius one-half that of Earth and a mass one-fifth the Earth’s mass. The gravitational acceleration at the surface of the planet is most nearly (A) 4.0 m/s2 (B) 8.0 m/s2 (C) 12.5 m/s2 (D) 25 m/s2 (E) 62.5 m/s2 33. In the following problem, the word “weight” refers to the force a s ...
... 32. A planet has a radius one-half that of Earth and a mass one-fifth the Earth’s mass. The gravitational acceleration at the surface of the planet is most nearly (A) 4.0 m/s2 (B) 8.0 m/s2 (C) 12.5 m/s2 (D) 25 m/s2 (E) 62.5 m/s2 33. In the following problem, the word “weight” refers to the force a s ...
Glossary Topics - Home - DMNS Galaxy Guide Portal
... the star to heat and cool, expand and contract. The very most massive stars are so luminous they blow off their outer layers. The remaining star, called a Wolf-Rayet star, is recognizable by its strange spectrum. Once the material at the core is burned to iron, the star faces the ultimate energy cri ...
... the star to heat and cool, expand and contract. The very most massive stars are so luminous they blow off their outer layers. The remaining star, called a Wolf-Rayet star, is recognizable by its strange spectrum. Once the material at the core is burned to iron, the star faces the ultimate energy cri ...
HW #10 Solutions
... the Elongation angle (i.e. Sun-Earth-Moon angle) of Moon when it is New and Gibbous. When the Moon is in the New Moon phase, it is in conjunction with the Sun and has an elongation angle near zero. So the real angular separation of the New Moon and the Sun is near zero degrees. When the Moon is in t ...
... the Elongation angle (i.e. Sun-Earth-Moon angle) of Moon when it is New and Gibbous. When the Moon is in the New Moon phase, it is in conjunction with the Sun and has an elongation angle near zero. So the real angular separation of the New Moon and the Sun is near zero degrees. When the Moon is in t ...
GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs
... 4.The most likely star color to have a planet with life would be ____ because: a. b. Consider Life Span and Life Zone size ...
... 4.The most likely star color to have a planet with life would be ____ because: a. b. Consider Life Span and Life Zone size ...
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.