Astronomy Final C - Tarleton State University
... 46. Which of the following is true? A.baryons form quarks and gluons B.quarks and gluons form baryons C.both of these may be true 47. The most widely accepted theory for the cause of Cosmic Inflation is A.Baryogenesis B.Annihilation C.Pair Production D.Phase Change E.Decoupling 48. In the productio ...
... 46. Which of the following is true? A.baryons form quarks and gluons B.quarks and gluons form baryons C.both of these may be true 47. The most widely accepted theory for the cause of Cosmic Inflation is A.Baryogenesis B.Annihilation C.Pair Production D.Phase Change E.Decoupling 48. In the productio ...
The sun - Salwan Education Trust
... rotation, this along with other factors, contributes to the Sun having a number of magnetic poles. Scientists aren’t sure of this number, but it is almost certainly in the range of 10 million! That is a huge number as you can see, and the lines of force (magnetic energy) which emanate from these po ...
... rotation, this along with other factors, contributes to the Sun having a number of magnetic poles. Scientists aren’t sure of this number, but it is almost certainly in the range of 10 million! That is a huge number as you can see, and the lines of force (magnetic energy) which emanate from these po ...
Searching For Planets Beyond Our Solar System - Cosmos
... solar zodiacal light, as already known around the nearby star Beta Pic. Ground-based, as well as Hubble Space Telescope, observations have already been highly successful in imaging stars with proto-planetary discs (Figure 3). ...
... solar zodiacal light, as already known around the nearby star Beta Pic. Ground-based, as well as Hubble Space Telescope, observations have already been highly successful in imaging stars with proto-planetary discs (Figure 3). ...
nucleosynthesis_oct28
... Ancient views of the nature of matter 1) Special connections exist between a body's location in space and its natural motion. Movements in the sublunar region are naturally vertical. Movements in the celestial region are naturally spherical. 2) Special connections exist between a body's location an ...
... Ancient views of the nature of matter 1) Special connections exist between a body's location in space and its natural motion. Movements in the sublunar region are naturally vertical. Movements in the celestial region are naturally spherical. 2) Special connections exist between a body's location an ...
Measuring the distance to Galaxies
... The star on the right is more luminous but appears only as bright as the one on the left. It must be further away The period is doubled so it is twice as luminous but its brightness is halved. It is less than twice as far away. (It will be 1.4 times as far away). ...
... The star on the right is more luminous but appears only as bright as the one on the left. It must be further away The period is doubled so it is twice as luminous but its brightness is halved. It is less than twice as far away. (It will be 1.4 times as far away). ...
Galaxy1
... stars in the sky. This is because they have extremely large luminosity. They can be readily seen at great distances. • The stars in our little volume of the Galaxy are almost completely, low mass stars. • This means if we increased the volume that we are using to search for stars, we would start to ...
... stars in the sky. This is because they have extremely large luminosity. They can be readily seen at great distances. • The stars in our little volume of the Galaxy are almost completely, low mass stars. • This means if we increased the volume that we are using to search for stars, we would start to ...
Document
... and forces pushing out (pressure). • Gravity comes from the mass of the cloud or star. • Pressure comes from the motion of the atoms or molecules. – Think of hot air balloons. – The hotter the air, the bigger the balloon. ...
... and forces pushing out (pressure). • Gravity comes from the mass of the cloud or star. • Pressure comes from the motion of the atoms or molecules. – Think of hot air balloons. – The hotter the air, the bigger the balloon. ...
Chapter14- Our Galaxy - SFA Physics and Astronomy
... Cool clouds of molecular gas from out of hydrogen and other elements. ...
... Cool clouds of molecular gas from out of hydrogen and other elements. ...
Announcements
... • The Sun heats the Earth. What is the source of the Sun’s energy? • The color of the Sun is yellowish -> the Sun is hot. What makes the surface hot? • The Sun does not seem to change much. It is very stable. What keeps it stable? ...
... • The Sun heats the Earth. What is the source of the Sun’s energy? • The color of the Sun is yellowish -> the Sun is hot. What makes the surface hot? • The Sun does not seem to change much. It is very stable. What keeps it stable? ...
Star Formation - University of Redlands
... and forces pushing out (pressure). • Gravity comes from the mass of the cloud or star. • Pressure comes from the motion of the atoms or molecules. – Think of hot air balloons. – The hotter the air, the bigger the balloon. ...
... and forces pushing out (pressure). • Gravity comes from the mass of the cloud or star. • Pressure comes from the motion of the atoms or molecules. – Think of hot air balloons. – The hotter the air, the bigger the balloon. ...
December 2015 - Hermanus Astronomy
... dune Curiosity will investigate is as tall as a two-story building and as broad as a football field. The Bagnold Dunes are active — images from orbit indicate some of them are migrating as much as about 1m per Earth year. No active dunes have been visited anywhere in the solar system besides Earth. ...
... dune Curiosity will investigate is as tall as a two-story building and as broad as a football field. The Bagnold Dunes are active — images from orbit indicate some of them are migrating as much as about 1m per Earth year. No active dunes have been visited anywhere in the solar system besides Earth. ...
The Transformation of Gas Giant Planets into Rocky Planets
... 1999, this “hot Jupiter,” referred to as “Osiris,” has a very close orbital period of a mere 3.5 days to its host star, is estimated to be slightly larger in dimension than Jupiter but less massive and has a core mass roughly ten times the mass of Earth. The temperature of its atmosphere is estimate ...
... 1999, this “hot Jupiter,” referred to as “Osiris,” has a very close orbital period of a mere 3.5 days to its host star, is estimated to be slightly larger in dimension than Jupiter but less massive and has a core mass roughly ten times the mass of Earth. The temperature of its atmosphere is estimate ...
Science Framework for California Public Schools
... in the night sky and the changes in those patterns with the seasons and lunar cycles. They should also have been intro duced to the solar system; and they can be expected to know that the Sun, which is composed primarily of hydrogen and helium, is the center of the solar system. They should also kn ...
... in the night sky and the changes in those patterns with the seasons and lunar cycles. They should also have been intro duced to the solar system; and they can be expected to know that the Sun, which is composed primarily of hydrogen and helium, is the center of the solar system. They should also kn ...
Chapter 8 - TeacherWeb
... Absolute Magnitude: is the actual brightness of a star. Because stars are long distances away astronomers use lightyears to measure the distances from Earth to the stars. Light year is the distance light travels in one year. Parallax: an apparent shift in the position of an object when viewed from d ...
... Absolute Magnitude: is the actual brightness of a star. Because stars are long distances away astronomers use lightyears to measure the distances from Earth to the stars. Light year is the distance light travels in one year. Parallax: an apparent shift in the position of an object when viewed from d ...
printer-friendly version of benchmark
... the two). The processes are basically opposite of one another. In nuclear fusion, lighter elements are combined to create new, heavier elements (the most common example is hydrogen being converted into helium). In nuclear fission, heavier elements are broken apart into lighter elements (one example ...
... the two). The processes are basically opposite of one another. In nuclear fusion, lighter elements are combined to create new, heavier elements (the most common example is hydrogen being converted into helium). In nuclear fission, heavier elements are broken apart into lighter elements (one example ...
Binary Stars
... and fainter) as they use up their fuel, like a dying coal. Stars start out cool, and get hotter and brighter as they use up fuel and contract under the influence of gravity. ...
... and fainter) as they use up their fuel, like a dying coal. Stars start out cool, and get hotter and brighter as they use up fuel and contract under the influence of gravity. ...
Slide 1
... Explanation: Microquasars, bizarre binary star systems generating high-energy radiation and blasting out jets of particles at nearly the speed of light, live in our Milky Way galaxy. The energetic microquasar systems seem to consist of a very compact object, either a neutron star or a black hole, f ...
... Explanation: Microquasars, bizarre binary star systems generating high-energy radiation and blasting out jets of particles at nearly the speed of light, live in our Milky Way galaxy. The energetic microquasar systems seem to consist of a very compact object, either a neutron star or a black hole, f ...
Celestial Distances
... Use the AU and stellar parallax to measure stars out to about 300 LY with satellite measurements, like Hipparcos Use the period-luminosity relationship for variable stars to measure distances out to 100million LY. Calibrate with nearby variables. Often the distance measured is to a cluster of st ...
... Use the AU and stellar parallax to measure stars out to about 300 LY with satellite measurements, like Hipparcos Use the period-luminosity relationship for variable stars to measure distances out to 100million LY. Calibrate with nearby variables. Often the distance measured is to a cluster of st ...
Ages of Star Clusters - Indiana University Astronomy
... sequence sooner. In a cluster in which all the stars formed at the same time, the stars “peel off” the main sequence from the top, leaving only progressively less and less massive stars remaining on the main sequence as time goes by. The main sequence turnoff is the point on the main sequence for wh ...
... sequence sooner. In a cluster in which all the stars formed at the same time, the stars “peel off” the main sequence from the top, leaving only progressively less and less massive stars remaining on the main sequence as time goes by. The main sequence turnoff is the point on the main sequence for wh ...
Poetry of the Stars
... Frost refers to Keat’s poem, “Bright Star” (1819); an Eremite is a hermit detached and watching, much like a muse. The star is detached from the Earth as if lofty and watchful. The star cannot tell him about the meaning of life, only what the “heavens declare”. Blackbody radiation was understood tur ...
... Frost refers to Keat’s poem, “Bright Star” (1819); an Eremite is a hermit detached and watching, much like a muse. The star is detached from the Earth as if lofty and watchful. The star cannot tell him about the meaning of life, only what the “heavens declare”. Blackbody radiation was understood tur ...
The Sun - Center for Astrophysics and Space Astronomy
... distance to a star in parsecs = 1/(parallax in arcseconds) ...
... distance to a star in parsecs = 1/(parallax in arcseconds) ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.