The Life of a Star
... life of a low-mass star and that of a star 10 times the Sun’s mass. Low-mass stars cool down and swell up into a red giant. Outer layers drift away and the star shrinks to become a white dwarf which will cool and fade away. High-mass stars swells into a red supergiant which undergoes a supernova. Th ...
... life of a low-mass star and that of a star 10 times the Sun’s mass. Low-mass stars cool down and swell up into a red giant. Outer layers drift away and the star shrinks to become a white dwarf which will cool and fade away. High-mass stars swells into a red supergiant which undergoes a supernova. Th ...
WORD - hrsbstaff.ednet.ns.ca
... 12. An imaginary sphere of infinite extent with Earth at its center on which the stars, planets, and other heavenly bodies appear to be located is known as the a. Zodiac. b. celestial sphere. c. atmosphere. d. Valhalla. 13. Which one of the following statements is true about the celestial coordinat ...
... 12. An imaginary sphere of infinite extent with Earth at its center on which the stars, planets, and other heavenly bodies appear to be located is known as the a. Zodiac. b. celestial sphere. c. atmosphere. d. Valhalla. 13. Which one of the following statements is true about the celestial coordinat ...
Astronomy HOMEWORK Chapter 12 - 9th Edition 1. Consider a star
... smoothly as mass decreases. So: the first stars to turn into Red Giants (and pass rapidly through other stages) are the high-mass ones. So “How:” the turnoff point is determined (L and T ). These values are correlated with a lifetime, and that’s the age of the cluster. 16. Why do astronomers believe ...
... smoothly as mass decreases. So: the first stars to turn into Red Giants (and pass rapidly through other stages) are the high-mass ones. So “How:” the turnoff point is determined (L and T ). These values are correlated with a lifetime, and that’s the age of the cluster. 16. Why do astronomers believe ...
Earth Science: Chapter 7: Stellar Evolution: Spring 2017: Student
... Greater than 20 Less than 10 million years Same as above except the mass is great enough to solar masses form a BLACK HOLE (see below) Planetary nebula: after a red giant forms material from the star is ejected and forms what looks like a nebula. The name planetary is actually misnamed by an early a ...
... Greater than 20 Less than 10 million years Same as above except the mass is great enough to solar masses form a BLACK HOLE (see below) Planetary nebula: after a red giant forms material from the star is ejected and forms what looks like a nebula. The name planetary is actually misnamed by an early a ...
PH709-assn-answers
... Explain the physical property that the parameter [Fe/H] is used to indicate and why its measurement is providing support for the core accretion hypothesis for planet formation (a) Planets orbiting within 0.1 AU of their host star all have close to circular orbits. All detected planets with semi-majo ...
... Explain the physical property that the parameter [Fe/H] is used to indicate and why its measurement is providing support for the core accretion hypothesis for planet formation (a) Planets orbiting within 0.1 AU of their host star all have close to circular orbits. All detected planets with semi-majo ...
ACCELERATION DUE TO GRAVITY IN STAR WARS In Star Wars
... 5500 kg/m3 , almost ten thousand times less; the density of white dwarf star matter is only 100 times larger! The shell, even if it could be formed, would collapse under its own weight. There is a much more realistic way to hold the acceleration due to gravity constant: one has to change the ratio o ...
... 5500 kg/m3 , almost ten thousand times less; the density of white dwarf star matter is only 100 times larger! The shell, even if it could be formed, would collapse under its own weight. There is a much more realistic way to hold the acceleration due to gravity constant: one has to change the ratio o ...
Mon Jul 29, 2013 SUN IN LEO? NO, CANCER!
... A little after 5 AM tomorrow, if skies are clear, you should see the old crescent moon low in the east. As dawn approaches, you may notice two, maybe three stars down below and to the left of the moon; in fact, these stars will appear to all lie along an invisible line stretching down diagonally fro ...
... A little after 5 AM tomorrow, if skies are clear, you should see the old crescent moon low in the east. As dawn approaches, you may notice two, maybe three stars down below and to the left of the moon; in fact, these stars will appear to all lie along an invisible line stretching down diagonally fro ...
E5 stellar processes and stellar evolution (HL only)
... • If the core is above 1.4 solar masses (the Chandrasekhar limit) Electrons are forced into protons producing neutrons. • The core is only made of neutrons and contracting rapidly. ...
... • If the core is above 1.4 solar masses (the Chandrasekhar limit) Electrons are forced into protons producing neutrons. • The core is only made of neutrons and contracting rapidly. ...
Chapter-6 Lecture Spring Semester
... more dense, solid surfaces, refractory elements (Fe, Ni, Silicates), and no rings Jovian planets are large and gaseous, volatile elements (H, He, CH4, NH3), far from the Sun, rotate quickly, have strong magnetic fields, large dense cores, many moons, less dense, no solid surface, and rings © 2014 Pe ...
... more dense, solid surfaces, refractory elements (Fe, Ni, Silicates), and no rings Jovian planets are large and gaseous, volatile elements (H, He, CH4, NH3), far from the Sun, rotate quickly, have strong magnetic fields, large dense cores, many moons, less dense, no solid surface, and rings © 2014 Pe ...
Introduction - Beck-Shop
... but as dinosaurs never (to our knowledge) developed a written language, it is unlikely that such speculation will ever be confirmed. The Copernican– Keplerian– Galilean– Newtonian revolution in the sixteenth and seventeenth centuries completely changed humanity’s view of the dimensions and dynamics ...
... but as dinosaurs never (to our knowledge) developed a written language, it is unlikely that such speculation will ever be confirmed. The Copernican– Keplerian– Galilean– Newtonian revolution in the sixteenth and seventeenth centuries completely changed humanity’s view of the dimensions and dynamics ...
Homework # 2 1. For each of the following, make a sketch showing
... o Belief 1: If Earth were moving, objects in the air would be left behind. Galileo used experiments to show how objects in motion will stay in motion (an early form of Newton's first law), so objects in Earth's atmosphere could conceivably continue to move with the planet o Belief 2: The heavens m ...
... o Belief 1: If Earth were moving, objects in the air would be left behind. Galileo used experiments to show how objects in motion will stay in motion (an early form of Newton's first law), so objects in Earth's atmosphere could conceivably continue to move with the planet o Belief 2: The heavens m ...
The H-R Diagram
... The Main Sequence: The main sequence goes from the upper left to the lower right. The stars at the upper left are hotter, larger, and more massive than the Sun. The Sun is near with an absolute magnitude of MV=+5 and a spectral type G2. Like all m.s. stars it is of luminosity class V. Those stars to ...
... The Main Sequence: The main sequence goes from the upper left to the lower right. The stars at the upper left are hotter, larger, and more massive than the Sun. The Sun is near with an absolute magnitude of MV=+5 and a spectral type G2. Like all m.s. stars it is of luminosity class V. Those stars to ...
Space Science Unit
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
the solar system and the universe
... planet appeared to be a gas giant like Jupiter. Astronomers were amazed to discover the planet orbiting so closely to its star that one orbit took only four days (Jupiter’s orbit takes twelve years!) This illustrated that exoplanets are quite different to those in our Solar System, and prompted much ...
... planet appeared to be a gas giant like Jupiter. Astronomers were amazed to discover the planet orbiting so closely to its star that one orbit took only four days (Jupiter’s orbit takes twelve years!) This illustrated that exoplanets are quite different to those in our Solar System, and prompted much ...
history of astro outline 2014
... o Aristotle also believed that an object stays in motion because a force is constantly pushing it. o Inconsistencies were recognized by the Chinese, reported blemishes such as moving objects with tails (comets) and bright lights that appear and disappear (supernovae). Also, the sometimes backwards m ...
... o Aristotle also believed that an object stays in motion because a force is constantly pushing it. o Inconsistencies were recognized by the Chinese, reported blemishes such as moving objects with tails (comets) and bright lights that appear and disappear (supernovae). Also, the sometimes backwards m ...
1 - Physics
... 6. Which takes longer to form, stars the mass of the sun or stars ten times the mass of the sun? • A) ten times the mass of the sun • B) both take the same length of time to form • C) mass of the sun • D) the formation rates will depend on the rotation of the gas clouds 7. Of the following, which i ...
... 6. Which takes longer to form, stars the mass of the sun or stars ten times the mass of the sun? • A) ten times the mass of the sun • B) both take the same length of time to form • C) mass of the sun • D) the formation rates will depend on the rotation of the gas clouds 7. Of the following, which i ...
Neutron Stars - Otterbein University
... • If the mass of the star is sufficiently large (M > 25 MSun), even the neutron pressure cannot halt the collapse – in fact, no known force can stop it! • The star collapses to a very small size, with ultrahigh density • Nearby gravity becomes so strong that nothing – not even light – can escape! • ...
... • If the mass of the star is sufficiently large (M > 25 MSun), even the neutron pressure cannot halt the collapse – in fact, no known force can stop it! • The star collapses to a very small size, with ultrahigh density • Nearby gravity becomes so strong that nothing – not even light – can escape! • ...
Kepler*s Laws
... Revolution: an instance of revolving Period: a length or portion of time Orbit: the curved path of a celestial object or spacecraft around a star, planet, or moon ...
... Revolution: an instance of revolving Period: a length or portion of time Orbit: the curved path of a celestial object or spacecraft around a star, planet, or moon ...
Comments from John Saunders.
... distance is kilometres is 415,500,000,000,000 or 415.5 trillion km’s. It has been estimated that it would take approximately 50,000 years for our fastest spacecraft to-date to reach Alpha Centauri. It’s not like popping over for a cup of tea….and this is our nearest star. Although when we look up at ...
... distance is kilometres is 415,500,000,000,000 or 415.5 trillion km’s. It has been estimated that it would take approximately 50,000 years for our fastest spacecraft to-date to reach Alpha Centauri. It’s not like popping over for a cup of tea….and this is our nearest star. Although when we look up at ...
Feb 2016 - Sudbury Astronomy Club
... The solar system appears to have a new ninth planet. Today, two scientists announced evidence that a body nearly the size of Neptune—but as yet unseen—orbits the sun every 15,000 years. During the solar system’s infancy 4.5 billion years ago, they say, the giant planet was knocked out of the planet- ...
... The solar system appears to have a new ninth planet. Today, two scientists announced evidence that a body nearly the size of Neptune—but as yet unseen—orbits the sun every 15,000 years. During the solar system’s infancy 4.5 billion years ago, they say, the giant planet was knocked out of the planet- ...
Teacher Resource Pack Unit Planning Resources
... toward a common center. Unlike the much larger outer planets, help, but it is essential that all which are mostly gas, the earth is mostly rock, with three-fourths students, sometimes working of its surface covered by a relatively thin layer of water and the together in small groups, make entire pla ...
... toward a common center. Unlike the much larger outer planets, help, but it is essential that all which are mostly gas, the earth is mostly rock, with three-fourths students, sometimes working of its surface covered by a relatively thin layer of water and the together in small groups, make entire pla ...
STARS AND CONSTELLATIONS
... - Last star in the Little Dipper handle - Pole star- called Polaris - Known to the Vikings as the Jewel Nailhead, to the Mongols as the Golden Peg, to the Chinese as the Emperor of Heavens, and to the American Indians as the Chief Star. The American Indians made and used star charts. - Polaris is a ...
... - Last star in the Little Dipper handle - Pole star- called Polaris - Known to the Vikings as the Jewel Nailhead, to the Mongols as the Golden Peg, to the Chinese as the Emperor of Heavens, and to the American Indians as the Chief Star. The American Indians made and used star charts. - Polaris is a ...
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.