Part I Light, Telescopes, Atoms and Stars
... The Sun The SUN – an average star Like a star- it’s a ball of mainly Hydrogen and Helium gas in a balance between downward gravity and outward pressure It is in the middle of the field in size, temperature, mass and life (compared to other stars – more later!) Spectral Class: G2 ...
... The Sun The SUN – an average star Like a star- it’s a ball of mainly Hydrogen and Helium gas in a balance between downward gravity and outward pressure It is in the middle of the field in size, temperature, mass and life (compared to other stars – more later!) Spectral Class: G2 ...
Question 1 The rings of Saturn are seen by Answer 1. reflected and
... . How far will Comet Halley be from the Sun when it reaches its farthest point from the Sun, or aphelion, if its sidereal period is 76 years? (Caution: This calculation needs Kepler's law and a little care. Assume that the comet's perihelion distance from the Sun is negligible.) Answer ...
... . How far will Comet Halley be from the Sun when it reaches its farthest point from the Sun, or aphelion, if its sidereal period is 76 years? (Caution: This calculation needs Kepler's law and a little care. Assume that the comet's perihelion distance from the Sun is negligible.) Answer ...
The Grand Tour of Voyager An historic event occurred on August 25
... An historic event occurred on August 25, 2012, and no one was aware of what had even happened. As Voyager 1 slipped out of the Sun’s sphere of influence and into interstellar space, even the researchers studying data the probe was sending back to Earth were unsure a momentous event had occurred: The ...
... An historic event occurred on August 25, 2012, and no one was aware of what had even happened. As Voyager 1 slipped out of the Sun’s sphere of influence and into interstellar space, even the researchers studying data the probe was sending back to Earth were unsure a momentous event had occurred: The ...
Solar System Unit
... - The students can then create their planets on the large piece of white paper with the name of their planet clearly showing and their name on the back. (K) - When the students are finished they should show the teacher - The students will then write 3-5 sentences about how this activity went. Specif ...
... - The students can then create their planets on the large piece of white paper with the name of their planet clearly showing and their name on the back. (K) - When the students are finished they should show the teacher - The students will then write 3-5 sentences about how this activity went. Specif ...
The Solar System and Beyond
... time, called a lunar cycle, you see different portions of the daylight side of the Moon. The lunar cycle begins with new moon. During new moon, the Moon is between Earth and the Sun. Half of the Moon is lit by the Sun, but this half can’t be seen from Earth. For about two weeks after new moon, the p ...
... time, called a lunar cycle, you see different portions of the daylight side of the Moon. The lunar cycle begins with new moon. During new moon, the Moon is between Earth and the Sun. Half of the Moon is lit by the Sun, but this half can’t be seen from Earth. For about two weeks after new moon, the p ...
Chapter 12 Earth, Moon, and Sun The Moon`s Surface
... Standard 8.2.g Students know the role of gravity in forming and maintaining the shapes of planets, stars, and the solar system. Standard 8.4.d Students know that stars are the source of light for all bright objects in outer space and that the Moon and planets shine by reflected sunlight, not by thei ...
... Standard 8.2.g Students know the role of gravity in forming and maintaining the shapes of planets, stars, and the solar system. Standard 8.4.d Students know that stars are the source of light for all bright objects in outer space and that the Moon and planets shine by reflected sunlight, not by thei ...
List of Illustrations
... Invention of the vacuum tube – ‘Cathode rays’ and ‘canal rays’ – William Crookes: the Crookes tube and the corpuscular interpretation of cathode rays – Cathode rays are shown to move far slower than light – The discovery of the electron – Wilhelm Röntgen & the discovery of X-rays – Radioactivity; Be ...
... Invention of the vacuum tube – ‘Cathode rays’ and ‘canal rays’ – William Crookes: the Crookes tube and the corpuscular interpretation of cathode rays – Cathode rays are shown to move far slower than light – The discovery of the electron – Wilhelm Röntgen & the discovery of X-rays – Radioactivity; Be ...
The Long-Term Dynamical Evolution of Planetary Systems
... current orbits of the planets will make it impossible to predict their future evolution indefinitely. One of the first indications that the Solar System is chaotic came from an 845 Myr integration of the orbits of the outer planets plus Pluto (Sussman and Wisdom 1988). Pluto was still considered a p ...
... current orbits of the planets will make it impossible to predict their future evolution indefinitely. One of the first indications that the Solar System is chaotic came from an 845 Myr integration of the orbits of the outer planets plus Pluto (Sussman and Wisdom 1988). Pluto was still considered a p ...
Chapter 13
... • In a matter of seconds the Earth-sized iron core is transformed into a 10-km, extremely dense ball of neutrons • The outer layers of the star, now not supported as well, collapse and heat to billions of degrees as they slam into the neutron core ...
... • In a matter of seconds the Earth-sized iron core is transformed into a 10-km, extremely dense ball of neutrons • The outer layers of the star, now not supported as well, collapse and heat to billions of degrees as they slam into the neutron core ...
Chapter 13 The Life of a Star The Life of a Star Mass Is the Key The
... passage through the heavens, but never considered that they evolved • In the 18th century, Immanuel Kant described the Sun as a fiery sphere, formed from the gases gravitated to the center of a solar nebula • In the 1850s and 1860s, Lord Kelvin and Hermann von Helmholtz used the physics of gases and ...
... passage through the heavens, but never considered that they evolved • In the 18th century, Immanuel Kant described the Sun as a fiery sphere, formed from the gases gravitated to the center of a solar nebula • In the 1850s and 1860s, Lord Kelvin and Hermann von Helmholtz used the physics of gases and ...
Origins: Where Are the Aliens?
... looks like in a continuous spectrum and represented as a graph. (The overhead shows hydrogen being absorbed in four specific bands of visible light. The two absorption lines just beyond 400 nanometers are caused by calcium in the Sun’s atmosphere.) Note to students that this graphic represents stell ...
... looks like in a continuous spectrum and represented as a graph. (The overhead shows hydrogen being absorbed in four specific bands of visible light. The two absorption lines just beyond 400 nanometers are caused by calcium in the Sun’s atmosphere.) Note to students that this graphic represents stell ...
Document
... distances, so lack of parallax seemed to rule out an orbiting Earth. • Galileo showed that stars must be much farther than Tycho thought — in part by using his telescope to see that the Milky Way is countless individual stars. If stars were much farther away, then lack of detectable parallax was n ...
... distances, so lack of parallax seemed to rule out an orbiting Earth. • Galileo showed that stars must be much farther than Tycho thought — in part by using his telescope to see that the Milky Way is countless individual stars. If stars were much farther away, then lack of detectable parallax was n ...
Stellar Evolution Guiding Questions Stars Evolve
... • In low-mass star, the compressed core is not an ideal gas, instead it is in an electron-degeneracy state • Electron-degeneracy: the electrons are so closely packed that they can not be further compressed. The core of a lowmass star becomes eventually being supported by degenerate-electron pressure ...
... • In low-mass star, the compressed core is not an ideal gas, instead it is in an electron-degeneracy state • Electron-degeneracy: the electrons are so closely packed that they can not be further compressed. The core of a lowmass star becomes eventually being supported by degenerate-electron pressure ...
Giant Planets at Small Orbital Distances
... As the search for planets and brown dwarfs around nearby stars accelerates, we should expect to be surprised. In no instance is this better illustrated than in the recent discovery by Mayor & Queloz (1995) of a planet orbiting a G2.5 star, 51 Pegasi, 14 parsecs away. With a 4.23{day period, a semi-m ...
... As the search for planets and brown dwarfs around nearby stars accelerates, we should expect to be surprised. In no instance is this better illustrated than in the recent discovery by Mayor & Queloz (1995) of a planet orbiting a G2.5 star, 51 Pegasi, 14 parsecs away. With a 4.23{day period, a semi-m ...
The Kuiper Belt - UCLA - Earth, Planetary, and Space Sciences
... total population must be substantial. We estimate that the Kuiper belt contains at least 35,000 objects larger than 100 kilometers in diameter. Hence, the Kuiper belt probably has a total mass that is hundreds of times larger than the wellknown asteroid belt between the orbits of Mars and Jupiter. C ...
... total population must be substantial. We estimate that the Kuiper belt contains at least 35,000 objects larger than 100 kilometers in diameter. Hence, the Kuiper belt probably has a total mass that is hundreds of times larger than the wellknown asteroid belt between the orbits of Mars and Jupiter. C ...
Section 3.5 The Earth, Moon, and Sun
... let’s imagine that the solar system consists only of the earth and the sun. The earth and the sun exert gravitational forces on one another so that the earth accelerates toward the sun and the sun accelerates toward the earth. But the sun is 333,000 times more massive than the earth and barely accel ...
... let’s imagine that the solar system consists only of the earth and the sun. The earth and the sun exert gravitational forces on one another so that the earth accelerates toward the sun and the sun accelerates toward the earth. But the sun is 333,000 times more massive than the earth and barely accel ...
Lectures 14 & 15 powerpoint (neutron stars & black holes)
... 4.3 and 3.9 Earth masses! Further analysis revealed a third planet with a mass of about that of our moon! And there is evidence that a fourth planet about 100 Earth masses orbits this pulsar with a much larger separation. Q: How can a NS have planets?!? (Recall that NS are created by supernovae, and ...
... 4.3 and 3.9 Earth masses! Further analysis revealed a third planet with a mass of about that of our moon! And there is evidence that a fourth planet about 100 Earth masses orbits this pulsar with a much larger separation. Q: How can a NS have planets?!? (Recall that NS are created by supernovae, and ...
Astronomical Spectra
... – Combination of quantum mechanical and electromagnetic effects: Ions are bombarded by transient electric and magnetic fields of high speed electrons zipping nearby, these electric fields split and shift the energy levels. This constant perturbation within the plasma environment depends most strongl ...
... – Combination of quantum mechanical and electromagnetic effects: Ions are bombarded by transient electric and magnetic fields of high speed electrons zipping nearby, these electric fields split and shift the energy levels. This constant perturbation within the plasma environment depends most strongl ...
Impact Age Dating ASTRO 202 Lecture Thursday, February 14, 2008
... to derive absolute ages, we can establish a relative age scale from from crater sizesize-distribution counts -From lunar samples returned to Earth by the Apollo astronauts, we can construct a viable absolute age scale for surfaces on the Moon ...
... to derive absolute ages, we can establish a relative age scale from from crater sizesize-distribution counts -From lunar samples returned to Earth by the Apollo astronauts, we can construct a viable absolute age scale for surfaces on the Moon ...
Week 6 - Asteroids, Comets, and Meteors
... not look much like your cousins. You may share similar features or characteristics, but you are still very different. Our solar system is filled with small, rocky fragments called asteroids. Asteroids are like the cousins of planets. They have characteristics in common, such as an orbit around the s ...
... not look much like your cousins. You may share similar features or characteristics, but you are still very different. Our solar system is filled with small, rocky fragments called asteroids. Asteroids are like the cousins of planets. They have characteristics in common, such as an orbit around the s ...
3rd GradeBook Notes for A Feast of Words…Earth and BeyondUnit
... dwarf planets – bodies in the solar system that orbit the sun, have a constant (nearly round) shape, are not moons, and have orbits that overlap with the orbits of other bodies fluorescent (flo-RE-snt) – giving off light energy after receiving another form of energy gravity – a force that pulls two ...
... dwarf planets – bodies in the solar system that orbit the sun, have a constant (nearly round) shape, are not moons, and have orbits that overlap with the orbits of other bodies fluorescent (flo-RE-snt) – giving off light energy after receiving another form of energy gravity – a force that pulls two ...
Structure of Neutron Stars
... Minimal mass In reality, minimal mass is determined by properties of protoNSs. Being hot, lepton rich they have much higher limit: about 0.7 solar mass. Stellar evolution does not produce NSs with barion mass less than about 1.4 solar mass. Fragmentation of a core due to rapid rotation potentially ...
... Minimal mass In reality, minimal mass is determined by properties of protoNSs. Being hot, lepton rich they have much higher limit: about 0.7 solar mass. Stellar evolution does not produce NSs with barion mass less than about 1.4 solar mass. Fragmentation of a core due to rapid rotation potentially ...
Ch_28_-_31_Earths_Role_as_a_Body_in_Space
... a central protosun and orbiting planets a. Earth orbits the Sun because ...
... a central protosun and orbiting planets a. Earth orbits the Sun because ...
History of Solar System formation and evolution hypotheses
Ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a ""Solar System"", simply because almost no one knew or believed that the Solar System, in the sense we now understand it, existed. The first step towards a theory of Solar System formation was the general acceptance of heliocentrism, the model which placed the Sun at the centre of the system and the Earth in orbit around it. This conception had been gestating for thousands of years, but was only widely accepted by the end of the 17th century. The first recorded use of the term ""Solar System"" dates from 1704.