Lect12-3-10-10
... The Orion nebula is lit up by the brilliant light of massive young stars. Their radiation is energetic enough to ionize the surrounding gas and heat it up, so that the gas that did not collapse into these young stars is pushed away. Behind the visible nebula is a dense cloud of molecular hydrogen ga ...
... The Orion nebula is lit up by the brilliant light of massive young stars. Their radiation is energetic enough to ionize the surrounding gas and heat it up, so that the gas that did not collapse into these young stars is pushed away. Behind the visible nebula is a dense cloud of molecular hydrogen ga ...
Origin of Ocean
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
Origins of Earth
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
Goals of the day Clickers Order of Magnitude Astronomy
... perspective!) to travel between the stars This means that what we SEE in the distant universe is light that has traveled a long ...
... perspective!) to travel between the stars This means that what we SEE in the distant universe is light that has traveled a long ...
File
... A star is born when gas and dust particles come together and make a cloud, called a Nebula. Gravity starts to compress the cloud, forcing the atoms to move closer. This starts a process called fusion. Fusion occurs when the atoms are so close together that they start to combine, making helium from h ...
... A star is born when gas and dust particles come together and make a cloud, called a Nebula. Gravity starts to compress the cloud, forcing the atoms to move closer. This starts a process called fusion. Fusion occurs when the atoms are so close together that they start to combine, making helium from h ...
Document
... 10. Massive stars, when collapses under its own gravity, may become a neutron star. Its outer envelope can be blown off in a spectacular explosion that is known as a supernova. 11. Neutron stars are effectively a big “nucleus” consisting of neutrons worth of 2-3 solar masses. Some neutron stars spin ...
... 10. Massive stars, when collapses under its own gravity, may become a neutron star. Its outer envelope can be blown off in a spectacular explosion that is known as a supernova. 11. Neutron stars are effectively a big “nucleus” consisting of neutrons worth of 2-3 solar masses. Some neutron stars spin ...
Galileo Galilei (1564-1642) - Sunshine Coast Centre RASC
... ► When he examined them he noticed an unusual object that the sky charts didn’t show. ► He alerted the Lowell Observatory and bigger telescopes were then focused on the discovery ...
... ► When he examined them he noticed an unusual object that the sky charts didn’t show. ► He alerted the Lowell Observatory and bigger telescopes were then focused on the discovery ...
Chapter 15 (Star Lives)
... 1. Explain in terms of its role in stellar evolution why iron is much more common than any other heavy element. 2. With one exception, which are more common on the periodic table, odd or even numbered elements? Relate this to the red giant stage of stellar evolution. 3. If practically every star mus ...
... 1. Explain in terms of its role in stellar evolution why iron is much more common than any other heavy element. 2. With one exception, which are more common on the periodic table, odd or even numbered elements? Relate this to the red giant stage of stellar evolution. 3. If practically every star mus ...
The Ever Expanding Universe
... Herculean task that involved over 2000 years of work! The Greeks knew how to do it using their mathematical invention trigonometry (the mathematics of right triangles), but a telescope precise enough to measure extremely tiny angles was not available until the 19th century when Friedrich Bessel succ ...
... Herculean task that involved over 2000 years of work! The Greeks knew how to do it using their mathematical invention trigonometry (the mathematics of right triangles), but a telescope precise enough to measure extremely tiny angles was not available until the 19th century when Friedrich Bessel succ ...
5. Star Formation and the Interstellar Medium in the Milky Way
... The matter and energy between the stars, the interstellar medium (ISM), is vitally important to the evolution of galaxies, since it is in this environment that stars are formed, and to this environment that both young and aging stars return matter enriched in the heavy elements that are essential fo ...
... The matter and energy between the stars, the interstellar medium (ISM), is vitally important to the evolution of galaxies, since it is in this environment that stars are formed, and to this environment that both young and aging stars return matter enriched in the heavy elements that are essential fo ...
Document
... stay for a while, and eventually move through giant stages before becoming white dwarfs. • Higher mass stars move rapidly off the main sequence and into the giant stages, eventually exploding in a supernova. ...
... stay for a while, and eventually move through giant stages before becoming white dwarfs. • Higher mass stars move rapidly off the main sequence and into the giant stages, eventually exploding in a supernova. ...
Goals of the day Clickers Order of Magnitude Astronomy
... perspective!) to travel between the stars This means that what we SEE in the distant universe is light that has traveled a long ...
... perspective!) to travel between the stars This means that what we SEE in the distant universe is light that has traveled a long ...
WHERE DO WE SEARCH FOR LIFE IN THE UNIVERSE?
... If we eliminate all stars that have a luminosity that is less than 1% of the Sun’s, then we eliminate nearly 75% of all stars in the Milky Way! ...
... If we eliminate all stars that have a luminosity that is less than 1% of the Sun’s, then we eliminate nearly 75% of all stars in the Milky Way! ...
Star Classification
... Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to ...
... Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to ...
Distances to Stars: Parsecs and Light Years
... distance of 1.5 miles • The Light Year = (2.9979E+08 m/sec)*(3.156E+07 sec) = 9.461E+15 m. Alpha Centauri is 4.3 light years away ...
... distance of 1.5 miles • The Light Year = (2.9979E+08 m/sec)*(3.156E+07 sec) = 9.461E+15 m. Alpha Centauri is 4.3 light years away ...
Using a Planisphere - Amateur Observers` Society of New York
... Wheel). Print the accompanying pieces and follow the instructions for construction. It will help you find the stars and constellations at any time during the year from our latitude. Notice how the night sky changes each hour, day and month as the stars continually rise in the East and set in the Wes ...
... Wheel). Print the accompanying pieces and follow the instructions for construction. It will help you find the stars and constellations at any time during the year from our latitude. Notice how the night sky changes each hour, day and month as the stars continually rise in the East and set in the Wes ...
Stars Unit 1-2: Stars
... • Scientists use spectral analysis to determine the composition of stars. – Spectral analysis is a process that uses a tool called a spectroscope to separate the different wavelengths of light coming from a star. – By observing which wavelengths are ...
... • Scientists use spectral analysis to determine the composition of stars. – Spectral analysis is a process that uses a tool called a spectroscope to separate the different wavelengths of light coming from a star. – By observing which wavelengths are ...
Astro 1 & 100 Levine Homework Stars Name:____________________________
... You may want to do the lecture-tutorial on pg 33, Apparent and Absolute Magnitude of Stars, prior to doing this portion of the homework, if you need a refresher on m and M. Ranking questions are 2 points each. Consider the following table of stars: ...
... You may want to do the lecture-tutorial on pg 33, Apparent and Absolute Magnitude of Stars, prior to doing this portion of the homework, if you need a refresher on m and M. Ranking questions are 2 points each. Consider the following table of stars: ...
Multiple choice test questions 2, Winter Semester
... 27) What are the two possible explanations for not seeing something glowing brightly along every line-of-sight? I) The universe is infinite in size and infinitely old, but dust absorbs most starlight from far away stars. II) The universe has a finite number of stars. III) The universe is changing i ...
... 27) What are the two possible explanations for not seeing something glowing brightly along every line-of-sight? I) The universe is infinite in size and infinitely old, but dust absorbs most starlight from far away stars. II) The universe has a finite number of stars. III) The universe is changing i ...
part 2 - Stardome
... layers will spread out, form size of Earth). the out (ab white dwarf star Sun will become a dense rs, but the yea of disperse over thousands universe. The planetary nebula will the in of w kno we ger than anything white dwarf will last lon can continue times larger than the Sun Stars that are about ...
... layers will spread out, form size of Earth). the out (ab white dwarf star Sun will become a dense rs, but the yea of disperse over thousands universe. The planetary nebula will the in of w kno we ger than anything white dwarf will last lon can continue times larger than the Sun Stars that are about ...
astronomy - sfox4science
... Dwarf planets such as ______________, and other celestial objects such as __________, _________________, ________________________, and _____________________. The universe, all of space and everything in it, contains billions and billions of stars and galaxies. A galaxy is a giant structure that cont ...
... Dwarf planets such as ______________, and other celestial objects such as __________, _________________, ________________________, and _____________________. The universe, all of space and everything in it, contains billions and billions of stars and galaxies. A galaxy is a giant structure that cont ...
Introduction to Stars ppt
... have a wide range of life spans, which depend on their mass. Higher mass stars on main sequence have shorter life spans. A star has a limited supply of core hydrogen and therefore can remain as a hydrogen-fusing main sequence star for a limited time - the star’s main sequence lifetime. Our Sun’s mai ...
... have a wide range of life spans, which depend on their mass. Higher mass stars on main sequence have shorter life spans. A star has a limited supply of core hydrogen and therefore can remain as a hydrogen-fusing main sequence star for a limited time - the star’s main sequence lifetime. Our Sun’s mai ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.