Supernova
... represented the ultimate source and destination of mankind. • In the modern scientific view, the stars are the physical source of the material that we are made of, and as the Sun evolves, our ashes will be sent back into the ISM. It is understandable that some people have replaced a faithbased relig ...
... represented the ultimate source and destination of mankind. • In the modern scientific view, the stars are the physical source of the material that we are made of, and as the Sun evolves, our ashes will be sent back into the ISM. It is understandable that some people have replaced a faithbased relig ...
lecture18
... pictures so its properties were known. Neutrinos made by the p + e → n + n reaction just before the explosion, were observed in huge underground detectors in the US and Japan over a several second period. More energy escaped with the neutrinos than in light! ...
... pictures so its properties were known. Neutrinos made by the p + e → n + n reaction just before the explosion, were observed in huge underground detectors in the US and Japan over a several second period. More energy escaped with the neutrinos than in light! ...
1 Astronomical Fundamentals of Time
... as constant as the sidereal day. However, those conditions are not true. Let’s see what the consequences are. 1. Obliquity of the Ecliptic. The Earth rotates parallel to its equator. Celestial objects move across the sky on diurnal circles parallel to the celestial equator. For this reason, it is e ...
... as constant as the sidereal day. However, those conditions are not true. Let’s see what the consequences are. 1. Obliquity of the Ecliptic. The Earth rotates parallel to its equator. Celestial objects move across the sky on diurnal circles parallel to the celestial equator. For this reason, it is e ...
The Sun - Our Star
... The temperature change from the chromosphere to the corona is quite dramatic rising from about 4000 K to 1 million K in a transition zone only a few thousand km thick. Heating of the chromosphere and especially the corona is not understood and remains one of the unanswered questions about the Sun (a ...
... The temperature change from the chromosphere to the corona is quite dramatic rising from about 4000 K to 1 million K in a transition zone only a few thousand km thick. Heating of the chromosphere and especially the corona is not understood and remains one of the unanswered questions about the Sun (a ...
Astronomy Test Objective 1: Origins of the Universe Multiple Choice
... 7. How would conditions on Earth be different if Earth were not tilted on its axis? EXPLAIN your answer. 8. What direction does the Sun rise and set in? What causes this? Objective 4: Stars Multiple Choice 1. The _____ of a star determines its temperature, luminosity, and diameter. a. mass b. compos ...
... 7. How would conditions on Earth be different if Earth were not tilted on its axis? EXPLAIN your answer. 8. What direction does the Sun rise and set in? What causes this? Objective 4: Stars Multiple Choice 1. The _____ of a star determines its temperature, luminosity, and diameter. a. mass b. compos ...
A Sense of Where We Are
... 1. The Local Group is (much) larger. Local group is the small cluster of nearby galaxies which includes the Milky Way as a member. It’s about 3 million light years across. The Solar Neighborhood is the collection of stars near the Sun, comprising a patch of space ~15 light years across. 2. The Astro ...
... 1. The Local Group is (much) larger. Local group is the small cluster of nearby galaxies which includes the Milky Way as a member. It’s about 3 million light years across. The Solar Neighborhood is the collection of stars near the Sun, comprising a patch of space ~15 light years across. 2. The Astro ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... oxygen will be made in its core. But the core will be the left-over white dwarf. The gas put back out into space will come from the red giant’s envelope, which hasn’t been hot enough for fusion to make new elements. Most of the elements in space were put there by supernova explosions. ...
... oxygen will be made in its core. But the core will be the left-over white dwarf. The gas put back out into space will come from the red giant’s envelope, which hasn’t been hot enough for fusion to make new elements. Most of the elements in space were put there by supernova explosions. ...
UNIT C - apel slice
... Beyond the asteroid belt are the five outer planets. In their order from the sun, they are Jupiter, Saturn, Uranus, Neptune, and Pluto. The first four of these planets are called gas giants, because they are composed mostly of hydrogen and helium. Jupiter is the largest planet in the solar system. I ...
... Beyond the asteroid belt are the five outer planets. In their order from the sun, they are Jupiter, Saturn, Uranus, Neptune, and Pluto. The first four of these planets are called gas giants, because they are composed mostly of hydrogen and helium. Jupiter is the largest planet in the solar system. I ...
The Sun and Space Weather
... dammage effects; deep dielecrtic charging (responsible for anomalies and losses); surface charging anomalies. ...
... dammage effects; deep dielecrtic charging (responsible for anomalies and losses); surface charging anomalies. ...
The Sun - Our Star - Sierra College Astronomy Home Page
... To produce the Sun’s energy output nearly 5 million tons of matter must be converted into energy each second. This in turn requires 610 billion kg of hydrogen be transformed into 606 billion kg of helium. Solar lifetime: ~ 10 billion years But how do we confirm this from observations? ...
... To produce the Sun’s energy output nearly 5 million tons of matter must be converted into energy each second. This in turn requires 610 billion kg of hydrogen be transformed into 606 billion kg of helium. Solar lifetime: ~ 10 billion years But how do we confirm this from observations? ...
Universe 8e Lecture Chapter 8 Origin of Our Solar System
... planets formed directly from the gases of the solar nebula. In this model the cores formed from planetesimals falling into the planets. The Sun formed by gravitational contraction of the center of the nebula. After about 108 years, temperatures at the protosun’s center became high enough to ignite n ...
... planets formed directly from the gases of the solar nebula. In this model the cores formed from planetesimals falling into the planets. The Sun formed by gravitational contraction of the center of the nebula. After about 108 years, temperatures at the protosun’s center became high enough to ignite n ...
Booklet 5 – Stellar Processes and Evolution
... Stars with a mass of between 8 and 20 solar masses have a more complex evolution. Initially, they evolve in the same way as low mass stars, turning into red giants and undergoing a core helium burning phase. In medium mass stars, however, the burning of helium into carbon is no longer the end phase ...
... Stars with a mass of between 8 and 20 solar masses have a more complex evolution. Initially, they evolve in the same way as low mass stars, turning into red giants and undergoing a core helium burning phase. In medium mass stars, however, the burning of helium into carbon is no longer the end phase ...
Solution
... “moving clock” runs slow, so the ratio of time elapsed in S to that in S’ is given by ...
... “moving clock” runs slow, so the ratio of time elapsed in S to that in S’ is given by ...
112501. r-process beam neutron
... Electron capture rates affect the formation of the shock wave. Neutrino interactions play a role in driving the explosion. Neutrino induced reactions alter ...
... Electron capture rates affect the formation of the shock wave. Neutrino interactions play a role in driving the explosion. Neutrino induced reactions alter ...
Mercury (by Dimitris)
... • One day on Mercury (sun rise to sun rise) is as long as two years on Mercury and it lasts about 176 Earth days. The planet rotates around its axis very slowly, in 59 Earth days, while it orbits the Sun very quickly in only 88 Earth days (average speed: 48 km/sec). • The surface of Mercury is heav ...
... • One day on Mercury (sun rise to sun rise) is as long as two years on Mercury and it lasts about 176 Earth days. The planet rotates around its axis very slowly, in 59 Earth days, while it orbits the Sun very quickly in only 88 Earth days (average speed: 48 km/sec). • The surface of Mercury is heav ...