File - Morgan, Kristen
... These astronomers believe 18-20 billion years ago all of the matter in the universe was packed into a very dense, very hot spot smaller than a dot! ...
... These astronomers believe 18-20 billion years ago all of the matter in the universe was packed into a very dense, very hot spot smaller than a dot! ...
Norman Lockyer Observatory
... 12.00 pm The Planets. A description of the planets and a glimpse into our current understanding of planetary science 12.45pm Lunch. There are no catering facilities at the NLO but there is a public picnic area in the grounds and the room inside for those who wish to bring their own packed lunch. Tea ...
... 12.00 pm The Planets. A description of the planets and a glimpse into our current understanding of planetary science 12.45pm Lunch. There are no catering facilities at the NLO but there is a public picnic area in the grounds and the room inside for those who wish to bring their own packed lunch. Tea ...
Notes Chapter 20 - Universe and Stars
... Massive stars that evolve faster than smaller stars Develop hotter cores…create heavier elements through fusion Fuses Iron atoms right before its death When fusion stops, the core collapses and causes a shock wave … and causes a ...
... Massive stars that evolve faster than smaller stars Develop hotter cores…create heavier elements through fusion Fuses Iron atoms right before its death When fusion stops, the core collapses and causes a shock wave … and causes a ...
Science Olympiad - Department of Physics and Astronomy
... begin to collapse Collapsing causes temperature to rise, igniting a shell of hydrogen around the core Star expands over 100 times its original size, core collapses further igniting helium fusion The surface of our sun might swallow the Earth when it becomes a red giant ...
... begin to collapse Collapsing causes temperature to rise, igniting a shell of hydrogen around the core Star expands over 100 times its original size, core collapses further igniting helium fusion The surface of our sun might swallow the Earth when it becomes a red giant ...
Facts - GreenSpirit
... The iron left at the outer rim of the star collapses inwards, the inner core expands, the 2 collide and an enormous explosion sends out all the matter into the Universe. ...
... The iron left at the outer rim of the star collapses inwards, the inner core expands, the 2 collide and an enormous explosion sends out all the matter into the Universe. ...
Document
... 11. to travel k. pitic II. Arrange the sentences in the correct order, according to the text on page 14. a. The latter has a diameter of almost two billion miles. b. If you counted one star a second it would take you more than thirty thousand years to count 100 billion. c. But, during your lifetime, ...
... 11. to travel k. pitic II. Arrange the sentences in the correct order, according to the text on page 14. a. The latter has a diameter of almost two billion miles. b. If you counted one star a second it would take you more than thirty thousand years to count 100 billion. c. But, during your lifetime, ...
Where Stars Are Born
... 1. What is the composition of interstellar gas? Of interstellar dust? 2. If space is a near-perfect vacuum, how can there be enough dust in it to block light? 3. What is an emission nebula? 4. How is interstellar dust detected? 5. Why is dust found in the neighborhood of some stars (as in the Pleiad ...
... 1. What is the composition of interstellar gas? Of interstellar dust? 2. If space is a near-perfect vacuum, how can there be enough dust in it to block light? 3. What is an emission nebula? 4. How is interstellar dust detected? 5. Why is dust found in the neighborhood of some stars (as in the Pleiad ...
The Life Cycles of Stars, Part II
... the name stuck. When the last of the helium atoms in the core are fused into carbon atoms, the star begins to die. Gravity causes the last of the star’s matter to collapse inward and compact. This is the white dwarf stage. At this stage, the star’s matter is extremely dense. White dwarfs shine with ...
... the name stuck. When the last of the helium atoms in the core are fused into carbon atoms, the star begins to die. Gravity causes the last of the star’s matter to collapse inward and compact. This is the white dwarf stage. At this stage, the star’s matter is extremely dense. White dwarfs shine with ...
The Life Cycles of Stars
... the name stuck. When the last of the helium atoms in the core are fused into carbon atoms, the star begins to die. Gravity causes the last of the star’s matter to collapse inward and compact. This is the white dwarf stage. At this stage, the star’s matter is extremely dense. White dwarfs shine with ...
... the name stuck. When the last of the helium atoms in the core are fused into carbon atoms, the star begins to die. Gravity causes the last of the star’s matter to collapse inward and compact. This is the white dwarf stage. At this stage, the star’s matter is extremely dense. White dwarfs shine with ...
Different types of YSOs
... Early solar system consisted of a planetary nebula-dust and gas surrounding protostar and early sun Chondrites & components clearly formed in nebula. Differentiated bodies too? ...
... Early solar system consisted of a planetary nebula-dust and gas surrounding protostar and early sun Chondrites & components clearly formed in nebula. Differentiated bodies too? ...
Lailaigib Lifecycle Of A Star
... A neutron star is about 20 km in diameter and the mass of about 1.4 times that of the Sun. This means that a neutron star is so bigger that on Earth, one teaspoonful would weigh a billion tons. Its small size and high density, a neutron star possesses a surface gravitational field. http://imagine.gs ...
... A neutron star is about 20 km in diameter and the mass of about 1.4 times that of the Sun. This means that a neutron star is so bigger that on Earth, one teaspoonful would weigh a billion tons. Its small size and high density, a neutron star possesses a surface gravitational field. http://imagine.gs ...
Solar Lithium Mystery Solved
... conducted a survey of 500 stars, nearly 25% of which are like our own sun (Nature 2009, 462, 189). Seventy of the sunlike stars are known to have planetary systems. Most of the stars that host planets have on average one-tenth the amount of lithium of sunlike stars without planets. The researchers s ...
... conducted a survey of 500 stars, nearly 25% of which are like our own sun (Nature 2009, 462, 189). Seventy of the sunlike stars are known to have planetary systems. Most of the stars that host planets have on average one-tenth the amount of lithium of sunlike stars without planets. The researchers s ...
GUM31 Y ALREDEDORES
... WR 55 is the only massive star related to RCW 78 and the main responsible for the ionization of the gas. The HI gas emission distribution reveals an HI shell associated with RCW 78, which can be interpreted as an HI bubble linked to the ionized ring nebula. CO observations show the presence of ...
... WR 55 is the only massive star related to RCW 78 and the main responsible for the ionization of the gas. The HI gas emission distribution reveals an HI shell associated with RCW 78, which can be interpreted as an HI bubble linked to the ionized ring nebula. CO observations show the presence of ...
Document
... of the atoms or molecules. – Think of hot air balloons. – The hotter the air, the bigger the ...
... of the atoms or molecules. – Think of hot air balloons. – The hotter the air, the bigger the ...
Galaxies and Stars Questions KEY
... Generally, stars with more mass have shorter life spans because they burn their fuel more quickly than smaller stars do. The mass also determines which direction the lifespan goes and ultimately, determines what the star becomes when it dies. 7. What is the outcome of a star that runs out of hydroge ...
... Generally, stars with more mass have shorter life spans because they burn their fuel more quickly than smaller stars do. The mass also determines which direction the lifespan goes and ultimately, determines what the star becomes when it dies. 7. What is the outcome of a star that runs out of hydroge ...
Origins of the Universe (FIB)
... Formed from a _____________ (an enormous cloud of dust and gas) The ______ like all __________ was formed from a nebula 1. _________ causes the matter of the nebula to _________ and __________ 2. The contracting nebula begins to ___________ into a spinning pancake shape with a bulge at the cente ...
... Formed from a _____________ (an enormous cloud of dust and gas) The ______ like all __________ was formed from a nebula 1. _________ causes the matter of the nebula to _________ and __________ 2. The contracting nebula begins to ___________ into a spinning pancake shape with a bulge at the cente ...
The Hidden Lives of Galaxies NSTA 2001
... At 15 million degrees Celsius in the center of the star, fusion ignites ! 4 (1H) --> 4He + 2 e+ + 2 neutrinos + energy Where does the energy come from ? Mass of four 1H > Mass of one 4He ...
... At 15 million degrees Celsius in the center of the star, fusion ignites ! 4 (1H) --> 4He + 2 e+ + 2 neutrinos + energy Where does the energy come from ? Mass of four 1H > Mass of one 4He ...
Parallax
... along a meter stick and measured the brightness of the light with a light meter. On next side you will see Luisa’s data. What trends do you notice? What is the relationship between light ...
... along a meter stick and measured the brightness of the light with a light meter. On next side you will see Luisa’s data. What trends do you notice? What is the relationship between light ...
RachelStarProject
... different paths at the end of their lives because high-mass stars become so compact that they have to do something different than low-mass stars. ...
... different paths at the end of their lives because high-mass stars become so compact that they have to do something different than low-mass stars. ...
Review Quiz No. 17
... The radius in the interior of a star where fusion processes can no longer take place. The point in time of a star’s life when nuclear fusion of hydrogen into helium ceases. The point in time of a star’s life when nuclear fusion processes cease alltogether. The point in a rotating star cluster beyond ...
... The radius in the interior of a star where fusion processes can no longer take place. The point in time of a star’s life when nuclear fusion of hydrogen into helium ceases. The point in time of a star’s life when nuclear fusion processes cease alltogether. The point in a rotating star cluster beyond ...
Week one: Space Physics and Aeronomy (pdf, 1.3 MB)
... Rotation rate increased, developing a disk shape. The central ball of the disk became hot enough to glow. A protostar is born. ...
... Rotation rate increased, developing a disk shape. The central ball of the disk became hot enough to glow. A protostar is born. ...
Planetary nebula
A planetary nebula, often abbreviated as PN or plural PNe, is a kind of emission nebula consisting of an expanding glowing shell of ionized gas ejected from old red giant stars late in their lives. The word ""nebula"" is Latin for mist or cloud and the term ""planetary nebula"" is a misnomer that originated in the 1780s with astronomer William Herschel because when viewed through his telescope, these objects appeared to him to resemble the rounded shapes of planets. Herschel's name for these objects was popularly adopted and has not been changed. They are a relatively short-lived phenomenon, lasting a few tens of thousands of years, compared to a typical stellar lifetime of several billion years.A mechanism for formation of most planetary nebulae is thought to be the following: at the end of the star's life, during the red giant phase, the outer layers of the star are expelled by strong stellar winds. Eventually, after most of the red giant's atmosphere is dissipated, the exposed hot, luminous core emits ultraviolet radiation to ionize the ejected outer layers of the star. Absorbed ultraviolet light energises the shell of nebulous gas around the central star, appearing as a bright coloured planetary nebula at several discrete visible wavelengths.Planetary nebulae may play a crucial role in the chemical evolution of the Milky Way, returning material to the interstellar medium from stars where elements, the products of nucleosynthesis (such as carbon, nitrogen, oxygen and neon), have been created. Planetary nebulae are also observed in more distant galaxies, yielding useful information about their chemical abundances.In recent years, Hubble Space Telescope images have revealed many planetary nebulae to have extremely complex and varied morphologies. About one-fifth are roughly spherical, but the majority are not spherically symmetric. The mechanisms which produce such a wide variety of shapes and features are not yet well understood, but binary central stars, stellar winds and magnetic fields may play a role.