Lecture 1: Properties of the Solar System Properties of the Solar
... An average density is adopted for the Sun and it is assumed that the mass is mostly within 0.6R. This value is 0.72 for a perfect sphere, but the Sun is oblate. ...
... An average density is adopted for the Sun and it is assumed that the mass is mostly within 0.6R. This value is 0.72 for a perfect sphere, but the Sun is oblate. ...
Midterm Study Guide
... 35. Which type of planets are most dense? 36. Which type of planets rotate the fastest? 37. Which type of planets are largest? 38. Which type of planets have thin atmosphere? 39. What is a cloud of gas and dust in space called? ...
... 35. Which type of planets are most dense? 36. Which type of planets rotate the fastest? 37. Which type of planets are largest? 38. Which type of planets have thin atmosphere? 39. What is a cloud of gas and dust in space called? ...
Interactive Tutorial Activities in ASTR 310
... B) a is younger than b: its planet formed more recently A) b has a larger diameter, takes longer than a to orbit discovered using one of three methods: measuring Doppler shifts B) b has a smaller diameter, takes the same amount of of the star, observing dips in the lightcurve of the star or seeing C ...
... B) a is younger than b: its planet formed more recently A) b has a larger diameter, takes longer than a to orbit discovered using one of three methods: measuring Doppler shifts B) b has a smaller diameter, takes the same amount of of the star, observing dips in the lightcurve of the star or seeing C ...
Our Solar System
... – The third planet from the Sun. – The only planet in our solar system where life has been found. – There is water on Earth’s surface and its atmosphere contains gases that support life. – Without the blanket of gases that cover Earth, humans would not be able to live on Earth. ...
... – The third planet from the Sun. – The only planet in our solar system where life has been found. – There is water on Earth’s surface and its atmosphere contains gases that support life. – Without the blanket of gases that cover Earth, humans would not be able to live on Earth. ...
Today`s Powerpoint
... Very eccentric orbit. Aphelion 98 AU, perihelion 38 AU. Period 557 years. Orbit tilt 44°. Radius 1200 ± 50 km so bigger than Pluto. Icy/rocky composition, like Pluto. More massive than Pluto. ...
... Very eccentric orbit. Aphelion 98 AU, perihelion 38 AU. Period 557 years. Orbit tilt 44°. Radius 1200 ± 50 km so bigger than Pluto. Icy/rocky composition, like Pluto. More massive than Pluto. ...
Distribution of Elements in the Earth`s Crust
... “Some part of our being knows this is where we came from. We long to return. And we can. Because the cosmos is also within us. We are made of star stuff. We are a way for the cosmos to know itself.” —Carl Sagan The universe began about 13.8 billion years ago with the big bang, an event in which enor ...
... “Some part of our being knows this is where we came from. We long to return. And we can. Because the cosmos is also within us. We are made of star stuff. We are a way for the cosmos to know itself.” —Carl Sagan The universe began about 13.8 billion years ago with the big bang, an event in which enor ...
Asteroseismology and the Solar
... many new sets of physical conditions and ages. • Measurements of latitudinal differential rotation and convection zone depths will provide new constraints for solar/stellar dynamo models. ...
... many new sets of physical conditions and ages. • Measurements of latitudinal differential rotation and convection zone depths will provide new constraints for solar/stellar dynamo models. ...
Chapter 2 - Cameron University
... • Using Tycho Brahe’s data, discovered that planets do not move in circles around the Sun, rather, they follow ellipses with the Sun located at one of the two foci! • Astronomers use the term eccentricity to describe how round or “stretched out” an ellipse is – the higher (closer to 1) the eccentric ...
... • Using Tycho Brahe’s data, discovered that planets do not move in circles around the Sun, rather, they follow ellipses with the Sun located at one of the two foci! • Astronomers use the term eccentricity to describe how round or “stretched out” an ellipse is – the higher (closer to 1) the eccentric ...
Ancient Astronomy
... speeds increase at the same rate (9.8 m/s every second). • Built telescopes and used them to observe the Sun, Moon, and planets. • Wrote a book that was influential in undermining confidence in the geocentric model of the universe, and got him into serious trouble with the Church. ...
... speeds increase at the same rate (9.8 m/s every second). • Built telescopes and used them to observe the Sun, Moon, and planets. • Wrote a book that was influential in undermining confidence in the geocentric model of the universe, and got him into serious trouble with the Church. ...
Earth Space Systems Semester 1 Exam Astronomy Vocabulary Astronomical Unit-
... miles). This unit of measurement is used to compare distances between other astronomical bodies. AuroraA bright display of changing colorful light caused by solar radiation interacting with the magnetosphere in Earth’s upper atmosphere and occurring at both polar regions. Big BangThe theory that sta ...
... miles). This unit of measurement is used to compare distances between other astronomical bodies. AuroraA bright display of changing colorful light caused by solar radiation interacting with the magnetosphere in Earth’s upper atmosphere and occurring at both polar regions. Big BangThe theory that sta ...
Chapter 2
... • Using Tycho Brahe’s data, discovered that planets do not move in circles around the Sun, rather, they follow ellipses with the Sun located at one of the two foci! • Astronomers use the term eccentricity to describe how round or “stretched out” an ellipse is – the higher (closer to 1) the eccentric ...
... • Using Tycho Brahe’s data, discovered that planets do not move in circles around the Sun, rather, they follow ellipses with the Sun located at one of the two foci! • Astronomers use the term eccentricity to describe how round or “stretched out” an ellipse is – the higher (closer to 1) the eccentric ...
ITS3
... The Sun is, in fact, a star in the Milky \Nay. it is positioned in the “Orion Spur”, near the edge of the constellation, it takes 200 million years to complete one orbit of the constellation. The Sun is the only object in the solar system which gives off (radiates) light - all the others just reflec ...
... The Sun is, in fact, a star in the Milky \Nay. it is positioned in the “Orion Spur”, near the edge of the constellation, it takes 200 million years to complete one orbit of the constellation. The Sun is the only object in the solar system which gives off (radiates) light - all the others just reflec ...
Document
... disks that astronomers have found. • The low-density dust disks such as the one around Beta Pictoris are produced by dust from collisions among comets, asteroids, and Kuiper belt objects. • Such disks are evidence that planetary systems have already formed (age = 10-1000 Myr) • The dense disks of ga ...
... disks that astronomers have found. • The low-density dust disks such as the one around Beta Pictoris are produced by dust from collisions among comets, asteroids, and Kuiper belt objects. • Such disks are evidence that planetary systems have already formed (age = 10-1000 Myr) • The dense disks of ga ...
Why the sun is important too!
... There have been studies that show that depression occurs in people during the change of seasons. As winter approaches and the earth tilts away from the sun, the days become shorter. This means less sunlight is available for our use. Many people find themselves depressed at this time of year, and the ...
... There have been studies that show that depression occurs in people during the change of seasons. As winter approaches and the earth tilts away from the sun, the days become shorter. This means less sunlight is available for our use. Many people find themselves depressed at this time of year, and the ...
solar_notes_Feb11
... Our Sun is one of about 100 billion in our galaxy (Milky Way); a normal “G2” star having average luminosity. Its average radius (696,000 km) is about 109 times that of Earth, and its mass is 1.989e+30 kg. ...
... Our Sun is one of about 100 billion in our galaxy (Milky Way); a normal “G2” star having average luminosity. Its average radius (696,000 km) is about 109 times that of Earth, and its mass is 1.989e+30 kg. ...
lec01_26sep2011
... have surrounded the sun like an atmosphere. The consideration of the planetary motions thus leads us to think that, by virtue of an excessive heat, the solar atmosphere originally extended beyond the orbits of all the planets and that it progressively shrank to its present limits. This might have oc ...
... have surrounded the sun like an atmosphere. The consideration of the planetary motions thus leads us to think that, by virtue of an excessive heat, the solar atmosphere originally extended beyond the orbits of all the planets and that it progressively shrank to its present limits. This might have oc ...
Lecture 4, PPT version
... upon it and noticing that same star placed close to the stars which antiquity attributed to Cassiopeia. When I had satisfied myself that no star of that kind had ever shone forth before, I was led into such perplexity by the unbelievability of the thing that I began to doubt the faith of my own eyes ...
... upon it and noticing that same star placed close to the stars which antiquity attributed to Cassiopeia. When I had satisfied myself that no star of that kind had ever shone forth before, I was led into such perplexity by the unbelievability of the thing that I began to doubt the faith of my own eyes ...
The Life of a Star
... a red super giant. After this stage things become more violent. Instead of gentle billowing gas shells being ejected into space (a planetary nebula) the red super giant tears itself apart in an unbelievably violent explosion called a supernova. As the radiation and debris clear, a neutron star emerg ...
... a red super giant. After this stage things become more violent. Instead of gentle billowing gas shells being ejected into space (a planetary nebula) the red super giant tears itself apart in an unbelievably violent explosion called a supernova. As the radiation and debris clear, a neutron star emerg ...
ASTR 101 Final Study Guide I received study guides for Chapters 1
... Gravity holds a star together, while pressure supports a star against gravity. Stars form from the matter in interstellar clouds, but also return much of that matter back to space once they live and die out. Interstellar matter is mostly hydrogen, with some helium as well as a tiny amount of silicat ...
... Gravity holds a star together, while pressure supports a star against gravity. Stars form from the matter in interstellar clouds, but also return much of that matter back to space once they live and die out. Interstellar matter is mostly hydrogen, with some helium as well as a tiny amount of silicat ...
Sacred Fire – Our Sun - University of Louisville
... ● Other than the hydrogen and helium formed at the time of the Big Bang, nuclear fusion within stars produces all atomic nuclei lighter than and including iron, and the process releases electromagnetic energy. Heavier elements are produced when certain massive stars achieve a supernova stage and exp ...
... ● Other than the hydrogen and helium formed at the time of the Big Bang, nuclear fusion within stars produces all atomic nuclei lighter than and including iron, and the process releases electromagnetic energy. Heavier elements are produced when certain massive stars achieve a supernova stage and exp ...
The Origin of the Solar System
... asteroid belts? Should all solar systems show evidence of an age of heavy bombardment? 2. If the solar nebula hypothesis is correct, then there are probably more planets in the universe than stars. Do you agree? Why or why not? ...
... asteroid belts? Should all solar systems show evidence of an age of heavy bombardment? 2. If the solar nebula hypothesis is correct, then there are probably more planets in the universe than stars. Do you agree? Why or why not? ...
Exploring the Outer Solar System Jane Luu When I was
... all kinds of mysterious surface features, and I remember thinking that it must be fun to study these beautiful things. So I asked a friend of mine who were the people whose job it was it was to study these images, and that was when I first heard of planetary science. This revelation stuck in my mind ...
... all kinds of mysterious surface features, and I remember thinking that it must be fun to study these beautiful things. So I asked a friend of mine who were the people whose job it was it was to study these images, and that was when I first heard of planetary science. This revelation stuck in my mind ...
Condensation of the Solar Nebula
... In the regions beyond the frost line, there are abundant supply of solid materials (ice), which quickly grow in size by accretion. The large planetesimals attract materials around them gravitationally, forming the jovian planets in a process similar to the gravitational collapse of the solar nebula ...
... In the regions beyond the frost line, there are abundant supply of solid materials (ice), which quickly grow in size by accretion. The large planetesimals attract materials around them gravitationally, forming the jovian planets in a process similar to the gravitational collapse of the solar nebula ...
The Sun Sun
... • Auroras, the result of solar flares, are bright displays of everchanging light caused by solar radiation interacting with the upper atmosphere in the region of the poles poles. ...
... • Auroras, the result of solar flares, are bright displays of everchanging light caused by solar radiation interacting with the upper atmosphere in the region of the poles poles. ...
Basic Information about the Solar System Handout
... Sun harbor their own "solar systems" with planets, which are being called extrasolar planets, or exoplanets. As of early February 2011, astronomers have detected a total of 510 planets orbiting other stars. This number is up from the milestone of 100 exoplanets discovered as of January 2004. Most kn ...
... Sun harbor their own "solar systems" with planets, which are being called extrasolar planets, or exoplanets. As of early February 2011, astronomers have detected a total of 510 planets orbiting other stars. This number is up from the milestone of 100 exoplanets discovered as of January 2004. Most kn ...
Solar System
The Solar System comprises the Sun and the planetary system that orbits it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets, with the remainder being significantly smaller objects, such as dwarf planets and small Solar System bodies such as comets and asteroids. Of those that orbit the Sun indirectly, two are larger than the smallest planet.The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in Jupiter. The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials. The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed largely of substances with relatively high melting points compared with hydrogen and helium, called ices, such as water, ammonia and methane. All planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.The Solar System also contains smaller objects. The asteroid belt, which lies between Mars and Jupiter, mostly contains objects composed, like the terrestrial planets, of rock and metal. Beyond Neptune's orbit lie the Kuiper belt and scattered disc, populations of trans-Neptunian objects composed mostly of ices, and beyond them a newly discovered population of sednoids. Within these populations are several dozen to possibly tens of thousands of objects large enough to have been rounded by their own gravity. Such objects are categorized as dwarf planets. Identified dwarf planets include the asteroid Ceres and the trans-Neptunian objects Pluto and Eris. In addition to these two regions, various other small-body populations, including comets, centaurs and interplanetary dust, freely travel between regions. Six of the planets, at least three of the dwarf planets, and many of the smaller bodies are orbited by natural satellites, usually termed ""moons"" after the Moon. Each of the outer planets is encircled by planetary rings of dust and other small objects.The solar wind, a stream of charged particles flowing outwards from the Sun, creates a bubble-like region in the interstellar medium known as the heliosphere. The heliopause is the point at which pressure from the solar wind is equal to the opposing pressure of interstellar wind; it extends out to the edge of the scattered disc. The Oort cloud, which is believed to be the source for long-period comets, may also exist at a distance roughly a thousand times further than the heliosphere. The Solar System is located in the Orion Arm, 26,000 light-years from the center of the Milky Way.