Accuracy of the Astronomical Unit
... 1 AU = ______________ ___________ km 2. The uncertainty in our measurement of the Astronomical Unit will factor into how well we can predict the position of a planet. The lower our uncertainty, the better we can guide a spacecraft to a rendezvous with a distant world. If we wanted to send a spacec ...
... 1 AU = ______________ ___________ km 2. The uncertainty in our measurement of the Astronomical Unit will factor into how well we can predict the position of a planet. The lower our uncertainty, the better we can guide a spacecraft to a rendezvous with a distant world. If we wanted to send a spacec ...
How are stars formed
... • He shell around core • Each time a shell ignites • Outermost layers can escape ...
... • He shell around core • Each time a shell ignites • Outermost layers can escape ...
Interplanetary Space Travel Accuracy of the Astronomical Unit When
... 1 AU = ______________ ± ___________ km 2. The uncertainty in our measurement of the Astronomical Unit will factor into how well we can predict the position of a planet. The lower our uncertainty, the better we can guide a spacecraft to a rendezvous with a distant world. If we wanted to send a spacec ...
... 1 AU = ______________ ± ___________ km 2. The uncertainty in our measurement of the Astronomical Unit will factor into how well we can predict the position of a planet. The lower our uncertainty, the better we can guide a spacecraft to a rendezvous with a distant world. If we wanted to send a spacec ...
Masers and high mass star formation Claire Chandler
... Other differences between low- and high-mass star formation • Physical properties of clouds undergoing low- and highmass star formation are different: – Massive SF: clouds are warmer, larger, more massive, mainly located in spiral arms; high mass stars form in clusters and ...
... Other differences between low- and high-mass star formation • Physical properties of clouds undergoing low- and highmass star formation are different: – Massive SF: clouds are warmer, larger, more massive, mainly located in spiral arms; high mass stars form in clusters and ...
Scientific American`s Ask the Experts
... craft to encounter an asteroid while it was passing through the asteroid belt on its way to Jupiter. But it took some effort to find an object that was located even roughly along Galileo’s path. Special targeting was required to reach this object, but the result was the first close-up view of an aster ...
... craft to encounter an asteroid while it was passing through the asteroid belt on its way to Jupiter. But it took some effort to find an object that was located even roughly along Galileo’s path. Special targeting was required to reach this object, but the result was the first close-up view of an aster ...
Document
... to solidify into a solid ball and that requires a little more physics to understand. Most materials can exist as gas, liquid or solid depending on the temperature and pressure. Water is the most familiar example of this. We cool water and it freezes, heat it and it boils. But the temperature it does ...
... to solidify into a solid ball and that requires a little more physics to understand. Most materials can exist as gas, liquid or solid depending on the temperature and pressure. Water is the most familiar example of this. We cool water and it freezes, heat it and it boils. But the temperature it does ...
Hertzsprung-Russell Diagram
... Modern Atomic Theory The evolution of the modern atomic theory in the 1920’s allowed for an explanation of the spectral lines. The classification system was re-organized to coincide with the temperature required to produce the spectral lines. ...
... Modern Atomic Theory The evolution of the modern atomic theory in the 1920’s allowed for an explanation of the spectral lines. The classification system was re-organized to coincide with the temperature required to produce the spectral lines. ...
Astronomy 111 Overview of the Solar system
... Aside: observations of other planetary systems In most other stellar (extrasolar) systems, all we know about are the stars, because they are overwhelmingly bright. – But, planets have been detected around other stars, with surprising properties (high eccentricities, small radii from star, sparse an ...
... Aside: observations of other planetary systems In most other stellar (extrasolar) systems, all we know about are the stars, because they are overwhelmingly bright. – But, planets have been detected around other stars, with surprising properties (high eccentricities, small radii from star, sparse an ...
Apparent size (apparent diameter)
... 1. The changing angle of insolation completes one full cycle per year. a. Intensity of insolation (maximum at solar noon): i. Solar noon insolation in the northern hemisphere increases from December 21st through June 21st. This is opposite in the southern hemisphere. ii. Solar noon insolation in the ...
... 1. The changing angle of insolation completes one full cycle per year. a. Intensity of insolation (maximum at solar noon): i. Solar noon insolation in the northern hemisphere increases from December 21st through June 21st. This is opposite in the southern hemisphere. ii. Solar noon insolation in the ...
Is there life in space? Activity 2: Moving Stars and Their Planets
... Q. Most of the planets that have been discovered orbit their stars at a tilt closer to 0 degrees than to 90 degrees. Why? A. The signal is more evident when the tilt is lower. The telescopes are not perfect, so they can only detect star motions that are very large. The largest motions occur when the ...
... Q. Most of the planets that have been discovered orbit their stars at a tilt closer to 0 degrees than to 90 degrees. Why? A. The signal is more evident when the tilt is lower. The telescopes are not perfect, so they can only detect star motions that are very large. The largest motions occur when the ...
STAR UNIT FLASH BACKS
... Friday, 2/8/13 1. A star’s absolute magnitude is: a.) a unit for measuring the brightness of a star b.) a unit that measures the size of a star c.) a unit for measuring the energy of a star ...
... Friday, 2/8/13 1. A star’s absolute magnitude is: a.) a unit for measuring the brightness of a star b.) a unit that measures the size of a star c.) a unit for measuring the energy of a star ...
04 Solar System
... b) stars are more likely to form large planets orbiting very near. c) terrestrial planets are different from jovian planets. d) the Moon formed near the Earth. e) Pluto has such a circular orbit. ...
... b) stars are more likely to form large planets orbiting very near. c) terrestrial planets are different from jovian planets. d) the Moon formed near the Earth. e) Pluto has such a circular orbit. ...
Lecture 17 Review
... Interstellar reddening - As light from stars passes through the interstellar medium blue light is slowly scattered out of the path, leaving the resultant light with a reddish color. Thus, remote clusters appear dimmer and redder than expected from their distance and ...
... Interstellar reddening - As light from stars passes through the interstellar medium blue light is slowly scattered out of the path, leaving the resultant light with a reddish color. Thus, remote clusters appear dimmer and redder than expected from their distance and ...
Solar System Formation
... Aumann (1985) gives nice statistics of IRAS catalog: 756 sources corresponding to stars 504 dwarfs or subgiants 267 have 12 and 25 micron fluxes 36 have 12, 25, and 60 micron fluxes 12 are “Vega-like” with significant 60 micron fluxes 14% of A-type stars (N = 6) 3% of F-type stars (N = 4) < 1% of G/ ...
... Aumann (1985) gives nice statistics of IRAS catalog: 756 sources corresponding to stars 504 dwarfs or subgiants 267 have 12 and 25 micron fluxes 36 have 12, 25, and 60 micron fluxes 12 are “Vega-like” with significant 60 micron fluxes 14% of A-type stars (N = 6) 3% of F-type stars (N = 4) < 1% of G/ ...
Astronomy - Wappingers Central School District
... advances in observational technologies, astronomy is a very dynamic subject. New and significant discoveries are constantly being made. This often makes the internet a more powerful resource than a well developed textbook. The course is designed to be flexible enough that the students will be able t ...
... advances in observational technologies, astronomy is a very dynamic subject. New and significant discoveries are constantly being made. This often makes the internet a more powerful resource than a well developed textbook. The course is designed to be flexible enough that the students will be able t ...
Test 3
... 23) Suppose you have two stars tugging on each other with a force of 10 38 Newtons of force. Now you double the distance between them. What is the new force? a) ¼ × 1038 b) ½ × 1038 c) 2 × 1038 d) 4 × 1038 24) A planet moves faster along its orbit a) when near the sun b) when far from the sun c) at ...
... 23) Suppose you have two stars tugging on each other with a force of 10 38 Newtons of force. Now you double the distance between them. What is the new force? a) ¼ × 1038 b) ½ × 1038 c) 2 × 1038 d) 4 × 1038 24) A planet moves faster along its orbit a) when near the sun b) when far from the sun c) at ...
CH10.AST1001.F16.EDS
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. • Resonances may also contribute. ...
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. • Resonances may also contribute. ...
AST 207 Test 1 28 September 2011
... Star X is on a bigger orbit. The radius of the orbit is the distance from the star to the center of mass of the star-companion system. Since , the mass of the companion is 1000 bigger for star X than for 51 Peg. Star X is orbiting another star, not a planet. 2. Use the drawing on the front page, whi ...
... Star X is on a bigger orbit. The radius of the orbit is the distance from the star to the center of mass of the star-companion system. Since , the mass of the companion is 1000 bigger for star X than for 51 Peg. Star X is orbiting another star, not a planet. 2. Use the drawing on the front page, whi ...
ExTRaSOLaR pLaNeTS
... Extrasolar planets are fascinating because they may solve mysteries about our own Solar System. There is a wealth of data available to study different types of galaxies and stars, which have enabled astronomers to develop models and theories on star and galaxy formation and to place our own galaxy a ...
... Extrasolar planets are fascinating because they may solve mysteries about our own Solar System. There is a wealth of data available to study different types of galaxies and stars, which have enabled astronomers to develop models and theories on star and galaxy formation and to place our own galaxy a ...
Science Grade 5 Date: March 21, 2014 ET Topic: Composition a
... moon - any natural body that revolves around a planet crater - a low, bowl-shaped area on the surface of a planet or moon moon phase - one of the shapes the moon seems to have as it orbits Earth eclipse - an event that occurs when one object in space passes through the shadow of another object in sp ...
... moon - any natural body that revolves around a planet crater - a low, bowl-shaped area on the surface of a planet or moon moon phase - one of the shapes the moon seems to have as it orbits Earth eclipse - an event that occurs when one object in space passes through the shadow of another object in sp ...
The Life of a Star
... throws its outer layers into space, forming a planetary nebula – This leaves behind the hot dense core of the red giant. – The remaining core is called a white dwarf. Over time, the white dwarf cools off and becomes a black dwarf. Planetary Nebula: A collection of gas and dust that was formed during ...
... throws its outer layers into space, forming a planetary nebula – This leaves behind the hot dense core of the red giant. – The remaining core is called a white dwarf. Over time, the white dwarf cools off and becomes a black dwarf. Planetary Nebula: A collection of gas and dust that was formed during ...
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.