Peer Instruction/Active Learning
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
Red Giants
... short answer is that towards the end of a star's life, the temperature near the core rises and this causes the size of the star to expand. This is the fate of the Sun in about 5 billion years. You might want to mark your calendar!The long answer is that stars convert hydrogen to helium to produce li ...
... short answer is that towards the end of a star's life, the temperature near the core rises and this causes the size of the star to expand. This is the fate of the Sun in about 5 billion years. You might want to mark your calendar!The long answer is that stars convert hydrogen to helium to produce li ...
PHS 111 Test 3 Review Chapters 26-28
... The Sun tends to bloat outward by nuclear fusion, and contract due to: gravitation. nuclear fission. mass decrease. its relatively slow spin. reduced gaseous pressures. Each second, the burning Sun's mass: decreases. increases. remains unchanged. The age of the Sun is about 7000 years. 5.5 million y ...
... The Sun tends to bloat outward by nuclear fusion, and contract due to: gravitation. nuclear fission. mass decrease. its relatively slow spin. reduced gaseous pressures. Each second, the burning Sun's mass: decreases. increases. remains unchanged. The age of the Sun is about 7000 years. 5.5 million y ...
PHS 111 Test 3 Review Chapters 26-28
... The Sun tends to bloat outward by nuclear fusion, and contract due to: gravitation. nuclear fission. mass decrease. its relatively slow spin. reduced gaseous pressures. Each second, the burning Sun's mass: decreases. increases. remains unchanged. The age of the Sun is about 7000 years. 5.5 million y ...
... The Sun tends to bloat outward by nuclear fusion, and contract due to: gravitation. nuclear fission. mass decrease. its relatively slow spin. reduced gaseous pressures. Each second, the burning Sun's mass: decreases. increases. remains unchanged. The age of the Sun is about 7000 years. 5.5 million y ...
Kepler Mission: The Search for Earth-sized Planets
... Not enough gravity to hold onto a lifesustaining atmosphere (like Mercury or Mars) ...
... Not enough gravity to hold onto a lifesustaining atmosphere (like Mercury or Mars) ...
Stars and their Properties
... Cosmic horizon – Edge of the Observable Universe Age of the Universe is determined by the size of the Observable Universe (right now it’s between 14 and 15 billion years old) Astrometry – Measuring the distance of stars and how they move around Solar Neighborhood – Closest stars to the Sun If you kn ...
... Cosmic horizon – Edge of the Observable Universe Age of the Universe is determined by the size of the Observable Universe (right now it’s between 14 and 15 billion years old) Astrometry – Measuring the distance of stars and how they move around Solar Neighborhood – Closest stars to the Sun If you kn ...
Prospecting for Planets – Radial Velocity Searches
... What can we learn about planets found by Radial Velocity? Fig 5 – This is an example of the sort of data found by RV observations. The vertical axis shows how the stars velocity in our direction changes, compared to time on the horizontal axis. If the star has a companion, we expect to see a repetit ...
... What can we learn about planets found by Radial Velocity? Fig 5 – This is an example of the sort of data found by RV observations. The vertical axis shows how the stars velocity in our direction changes, compared to time on the horizontal axis. If the star has a companion, we expect to see a repetit ...
Integrative Studies 410 Our Place in the Universe
... • Main-sequence star; pressure from nuclear fusion and gravity are in balance – Duration ~ 10 billion years (much longer than all other stages combined) – Temperature ~ 15 million K at core, 6000 K at surface – Size ~ Sun ...
... • Main-sequence star; pressure from nuclear fusion and gravity are in balance – Duration ~ 10 billion years (much longer than all other stages combined) – Temperature ~ 15 million K at core, 6000 K at surface – Size ~ Sun ...
Powerpoint 2003
... Galileo discovered that the higher an object is dropped, the greater its speed when it reaches the ground All falling objects near the surface of the Earth have the same acceleration (9.8 m/s2) The acceleration of gravity on the surface of other solar-system bodies depends on their mass and radius • ...
... Galileo discovered that the higher an object is dropped, the greater its speed when it reaches the ground All falling objects near the surface of the Earth have the same acceleration (9.8 m/s2) The acceleration of gravity on the surface of other solar-system bodies depends on their mass and radius • ...
Slide 1
... – Since outer planets can accrete gas if large enough, the relative timescales of planetary growth and gas loss are important ...
... – Since outer planets can accrete gas if large enough, the relative timescales of planetary growth and gas loss are important ...
Station 1 - Fall River Public Schools
... extremely far apart. The next nearest star to Earth, besides the sun, is Proxima Centauri. Light travels 9,460,000,000,000 kilometers in one year, or 300,000 kilometers per second. Even if you traveled at the speed of light, it would take you 4.3 years to reach Proxima Centauri. What Makes Up the Un ...
... extremely far apart. The next nearest star to Earth, besides the sun, is Proxima Centauri. Light travels 9,460,000,000,000 kilometers in one year, or 300,000 kilometers per second. Even if you traveled at the speed of light, it would take you 4.3 years to reach Proxima Centauri. What Makes Up the Un ...
Jupiter, the fifth planet from the sun and the largest planet in our
... system, is famous for its rings. It has 61 known moons plus hundreds of moonlets within the ring system. Saturn’s ring system appears from Earth to be a few broad rings. It really consists of more than 100,000 individual “ringlets.” They contain countless icy particles. Most are the size of dust gra ...
... system, is famous for its rings. It has 61 known moons plus hundreds of moonlets within the ring system. Saturn’s ring system appears from Earth to be a few broad rings. It really consists of more than 100,000 individual “ringlets.” They contain countless icy particles. Most are the size of dust gra ...
THE SOLAR SYSTEM UNITS OF MEASURMENT IN ASTRONOMY
... BEYOND THE KUIPER BELT, SCIENTIST BELIEVE THERE IS A SPHERICAL CLOUD OF DEBRIS KNOWN AS THE OORT CLOUD. THIS EXTENDS FROM ABOUT 50,000 TO 100,000 AU OR 1 LY TO ABOURT 1.7 LY FROM THE SUN. THIS REGION COULD CONTAIN UP TO 1 TRILLION ICY OBJECTS AND IS THOUGHT TO BE THE ORIGIN OF MOST COMETS. ...
... BEYOND THE KUIPER BELT, SCIENTIST BELIEVE THERE IS A SPHERICAL CLOUD OF DEBRIS KNOWN AS THE OORT CLOUD. THIS EXTENDS FROM ABOUT 50,000 TO 100,000 AU OR 1 LY TO ABOURT 1.7 LY FROM THE SUN. THIS REGION COULD CONTAIN UP TO 1 TRILLION ICY OBJECTS AND IS THOUGHT TO BE THE ORIGIN OF MOST COMETS. ...
the earth
... The expansion of universe means increase in space between the galaxies. An alternative to this was Hoyle’s concept of steady state. It considered the universe to be roughly the same at any point of time. However, with greater evidence becoming available about the ...
... The expansion of universe means increase in space between the galaxies. An alternative to this was Hoyle’s concept of steady state. It considered the universe to be roughly the same at any point of time. However, with greater evidence becoming available about the ...
Types of Stars - WordPress.com
... • The main sequence is a narrow band of stars on the H-R diagram that runs diagonally from the upper left ( bright, hot stars) to the lower right ( dim, cool stars). About 90 percent of stars are on the main sequence, including the Sun. • A star’s position on the main sequence is determined by its i ...
... • The main sequence is a narrow band of stars on the H-R diagram that runs diagonally from the upper left ( bright, hot stars) to the lower right ( dim, cool stars). About 90 percent of stars are on the main sequence, including the Sun. • A star’s position on the main sequence is determined by its i ...
PPT - McMaster Physics and Astronomy
... 4(1H )4He 2 energy Nuclear reactions yield predictable neutrino fluxes from the Sun that directly reflect reaction rates ...
... 4(1H )4He 2 energy Nuclear reactions yield predictable neutrino fluxes from the Sun that directly reflect reaction rates ...
Habitability and Life Parameters in our Solar System
... Previous studies have been more conservative. In 2011 Seth Borenstein concluded that there are roughly 500 million habitable planets in the Milky Way. NASA’s Jet Propulsion Laboratory study based on observations from the Kepler mission, raised the number somewhat concluding that about “1.4 to 2.7 pe ...
... Previous studies have been more conservative. In 2011 Seth Borenstein concluded that there are roughly 500 million habitable planets in the Milky Way. NASA’s Jet Propulsion Laboratory study based on observations from the Kepler mission, raised the number somewhat concluding that about “1.4 to 2.7 pe ...
ASTR120 Homework 1 − Solutions
... Jupiter : Your diagram should look something like the one in box 4 - 1. In this case, the Earth ’ s orbit is the inferior planet orbit and Jupiter ’ s oribit replaces that of the Earth. From this diagram, you can tell that from conjunction to conjuction, Jupiter -the outer planet -- makes less than ...
... Jupiter : Your diagram should look something like the one in box 4 - 1. In this case, the Earth ’ s orbit is the inferior planet orbit and Jupiter ’ s oribit replaces that of the Earth. From this diagram, you can tell that from conjunction to conjuction, Jupiter -the outer planet -- makes less than ...
File - Adopt A Constellation
... • Milky Way – One of the billions of galaxies that make up the universe. The sun is one of the billions of stars in the Milky Way. • The Milky Way is a large spiral galaxy. • The Sun and its planets (including Earth) lie in this quiet part of the galaxy, about half way out from the center. • The Mi ...
... • Milky Way – One of the billions of galaxies that make up the universe. The sun is one of the billions of stars in the Milky Way. • The Milky Way is a large spiral galaxy. • The Sun and its planets (including Earth) lie in this quiet part of the galaxy, about half way out from the center. • The Mi ...
How Is a Star`s Color Related to Its Temperature? - d
... Dwarf stars are smaller than our Sun. How can they be so bright? ...
... Dwarf stars are smaller than our Sun. How can they be so bright? ...
SOLUTION SET
... 23. The Earth spins about its own axis and revolves around the Sun in the same sense. The length of a sidereal day is 23 hours and 56 minutes. If the Earth’s spin rate were to double, the length of the sidereal day would be: A. 23 hours and 58 minutes B. 11 hours and 56 minutes C. 24 hours and 4 mi ...
... 23. The Earth spins about its own axis and revolves around the Sun in the same sense. The length of a sidereal day is 23 hours and 56 minutes. If the Earth’s spin rate were to double, the length of the sidereal day would be: A. 23 hours and 58 minutes B. 11 hours and 56 minutes C. 24 hours and 4 mi ...
Astronomy 101 Course Review and Summary
... (2) The acceleration of an object is directly proportional to force, and inversely proportional to mass. (3) For every action, there is an equal and opposite reaction. Law of Gravity: The gravitational force between masses M and m, separated by distance r, is proportional to the product of the masse ...
... (2) The acceleration of an object is directly proportional to force, and inversely proportional to mass. (3) For every action, there is an equal and opposite reaction. Law of Gravity: The gravitational force between masses M and m, separated by distance r, is proportional to the product of the masse ...
Lab 5: Searching for Extra-Solar Planets
... planetary systems were suspected to exist, none had been found. Now, thirteen years later, the search for planets around other stars, known as extra-solar planets or exoplanets, is one of the hot research areas in astronomy. As of June 2011, 560 extra-solar planets have been found in at least 369 pl ...
... planetary systems were suspected to exist, none had been found. Now, thirteen years later, the search for planets around other stars, known as extra-solar planets or exoplanets, is one of the hot research areas in astronomy. As of June 2011, 560 extra-solar planets have been found in at least 369 pl ...
wdtoc1
... Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and ice. Pluto does not belong to either group, and there is an ongoing debate as to whether Pluto should be categorized as a major ...
... Uranus, and Neptune). The inner planets are small and are composed primarily of rock and iron. The outer planets are much larger and consist mainly of hydrogen, helium, and ice. Pluto does not belong to either group, and there is an ongoing debate as to whether Pluto should be categorized as a major ...
Star Life Cycle - GSHS Mrs. Francomb
... • After millions to billions of years, depending on their initial masses, stars run out of their main fuel - hydrogen. • Without the outward pressure generated from these reactions to counteract the force of gravity, the outer layers of the star begin to collapse inward toward the core. • Just as du ...
... • After millions to billions of years, depending on their initial masses, stars run out of their main fuel - hydrogen. • Without the outward pressure generated from these reactions to counteract the force of gravity, the outer layers of the star begin to collapse inward toward the core. • Just as du ...
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.