AST301.Ch16.Sun
... equilibrium (pressure balances gravity), energy conservation through each layer… This gives the values of temperature, pressure, density, luminosity as a function of radius, from the center to the photosphere. This is the only way to get detailed predictions about the sun’s (and other stars’) interi ...
... equilibrium (pressure balances gravity), energy conservation through each layer… This gives the values of temperature, pressure, density, luminosity as a function of radius, from the center to the photosphere. This is the only way to get detailed predictions about the sun’s (and other stars’) interi ...
Student Teacher Candidate: Jennet Bertmeyer Lesson Subject(s
... 2. What can you tell me about space or the solar system? Can you name the planets? Let’s take a little mini pre-quiz so that I can see where the whole class is in their space knowledge so that I know what stops we need to make on our mission over the next few days. 3. Clicker quiz. After the quiz as ...
... 2. What can you tell me about space or the solar system? Can you name the planets? Let’s take a little mini pre-quiz so that I can see where the whole class is in their space knowledge so that I know what stops we need to make on our mission over the next few days. 3. Clicker quiz. After the quiz as ...
123mt13a
... 21. “it is manifest to any observer that the Earth occupies the middle place in the cosmos and that all weights move towards it” Who wrote this and what is the significance of this statement in terms of defining a cultural truth? LOTS OF MERCY POINTS HERE ...
... 21. “it is manifest to any observer that the Earth occupies the middle place in the cosmos and that all weights move towards it” Who wrote this and what is the significance of this statement in terms of defining a cultural truth? LOTS OF MERCY POINTS HERE ...
Aug - Wadhurst Astronomical Society
... We were told that some lava flows created tunnels which have now partially collapsed, creating rills and caves that show up on images as odd landscapes. Other strange features William introduced us to were Swirls of very light coloured material and appear not to be impact craters but could be assoc ...
... We were told that some lava flows created tunnels which have now partially collapsed, creating rills and caves that show up on images as odd landscapes. Other strange features William introduced us to were Swirls of very light coloured material and appear not to be impact craters but could be assoc ...
The Sky and the Motions of the Earth
... • Neither is tilted toward the Sun vernal and autumnal equinox • Seasons not caused by earth changing its distance from the Sun ...
... • Neither is tilted toward the Sun vernal and autumnal equinox • Seasons not caused by earth changing its distance from the Sun ...
Astronomy Galaxies & The Universe
... Star Brightness luminosity – depends on size & temperature apparent magnitude – as seen from Earth: brightest are ≤ 1 faintest are ≥ 6 absolute magnitude – expresses luminosity of stars as if they were all seen 32.6 lightyears from Earth (our sun = 4.8) ...
... Star Brightness luminosity – depends on size & temperature apparent magnitude – as seen from Earth: brightest are ≤ 1 faintest are ≥ 6 absolute magnitude – expresses luminosity of stars as if they were all seen 32.6 lightyears from Earth (our sun = 4.8) ...
Our Star, the Sun
... The Sun’s energy is produced by hydrogen fusion, not in a single step, but in a sequence of thermonuclear reactions in which four hydrogen nuclei combine to produce a single helium nucleus ...
... The Sun’s energy is produced by hydrogen fusion, not in a single step, but in a sequence of thermonuclear reactions in which four hydrogen nuclei combine to produce a single helium nucleus ...
Powerpoint Presentation (large file)
... The Sun’s energy is produced by hydrogen fusion, not in a single step, but in a sequence of thermonuclear reactions in which four hydrogen nuclei combine to produce a single helium nucleus ...
... The Sun’s energy is produced by hydrogen fusion, not in a single step, but in a sequence of thermonuclear reactions in which four hydrogen nuclei combine to produce a single helium nucleus ...
Integrative Studies 410 Our Place in the Universe
... • Implosion of a white dwarf after it accretes a certain amount of matter, reaching about 1.4 solar masses • Very predictable; used as a standard candle – Estimate distances to galaxies where they occur ...
... • Implosion of a white dwarf after it accretes a certain amount of matter, reaching about 1.4 solar masses • Very predictable; used as a standard candle – Estimate distances to galaxies where they occur ...
CH .19 Earth Moon Sun I. Astronomy – study of stars, planets, and
... D. Tides – rising and falling ocean levels 1. caused by moon gravity on part of Earth lined up with the moon 2. two high tides per day and 2 low tides per day a. each high tide is about 12.5 hrs. apart III. Earth’s Moon A. Origin 1. Collision Theory – When solar system was forming, a planet a little ...
... D. Tides – rising and falling ocean levels 1. caused by moon gravity on part of Earth lined up with the moon 2. two high tides per day and 2 low tides per day a. each high tide is about 12.5 hrs. apart III. Earth’s Moon A. Origin 1. Collision Theory – When solar system was forming, a planet a little ...
Lecture 2a
... have moons • Plus “debris”: comets, asteroids, meteors, etc • Outer debris: Ort cloud, Kuiper belt, scattered disc… • We’ll go over historical understanding of motion (which is “complicated” when viewed from the Earth) and later look at Solar System formation, planetary atmospheres, and planets d ...
... have moons • Plus “debris”: comets, asteroids, meteors, etc • Outer debris: Ort cloud, Kuiper belt, scattered disc… • We’ll go over historical understanding of motion (which is “complicated” when viewed from the Earth) and later look at Solar System formation, planetary atmospheres, and planets d ...
maymester2
... Planetary Motions • The planets’ orbits (except Mercury and Pluto) are nearly circular. • The further a planet is from the Sun, the greater its orbital period. • Although derived for the six innermost planets known at the time, Kepler’s Laws apply to all currently known planets. • Do Kepler’s laws ...
... Planetary Motions • The planets’ orbits (except Mercury and Pluto) are nearly circular. • The further a planet is from the Sun, the greater its orbital period. • Although derived for the six innermost planets known at the time, Kepler’s Laws apply to all currently known planets. • Do Kepler’s laws ...
THE LIFE CYCLE OF A STAR
... The smallest mass possible for a star is about 8% that of the Sun (80 times the mass of the planet Jupiter), otherwise nuclear reactions do not take place. Objects with less than critical mass shine only dimly and are termed brown dwarfs or a large planet. Towards the end of its life, a star like th ...
... The smallest mass possible for a star is about 8% that of the Sun (80 times the mass of the planet Jupiter), otherwise nuclear reactions do not take place. Objects with less than critical mass shine only dimly and are termed brown dwarfs or a large planet. Towards the end of its life, a star like th ...
STUDY GUIDE FOR CHAPTER 1
... c. Because the field is so strong there are extensive radiation belts. 2. Saturn a. It has a strong magnetic field but much weaker than Jupiter’s. b. This is because it has a smaller region of liquid metallic hydrogen in its interior. 3. Uranus and Neptune ...
... c. Because the field is so strong there are extensive radiation belts. 2. Saturn a. It has a strong magnetic field but much weaker than Jupiter’s. b. This is because it has a smaller region of liquid metallic hydrogen in its interior. 3. Uranus and Neptune ...
asteroid
... • More than a thousand asteroids have orbits that sometimes bring them very close to Earth. These are called near-Earth asteroids. • These asteroids could inflict great damage on Earth if they were to strike the planet. • Several recently established asteroid detection programs have begun to track a ...
... • More than a thousand asteroids have orbits that sometimes bring them very close to Earth. These are called near-Earth asteroids. • These asteroids could inflict great damage on Earth if they were to strike the planet. • Several recently established asteroid detection programs have begun to track a ...
Summer 2008 Astronomical Calendar
... will be as close as they will get to each other all year, it’s not the distance between the two worlds that makes Jupiter so bright. Jupiter’s size and brightly reflective clouds make it dazzle. Jupiter is 11 times as wide as the Earth, with about 121 times more surface area. The best time to view J ...
... will be as close as they will get to each other all year, it’s not the distance between the two worlds that makes Jupiter so bright. Jupiter’s size and brightly reflective clouds make it dazzle. Jupiter is 11 times as wide as the Earth, with about 121 times more surface area. The best time to view J ...
Review Day
... stars held together by gravity. There are 3 types of galaxies: Spiral: Pinwheel shape with stars on the arms and gas and dust clustered in the center. Thought that a black hole is in center. ...
... stars held together by gravity. There are 3 types of galaxies: Spiral: Pinwheel shape with stars on the arms and gas and dust clustered in the center. Thought that a black hole is in center. ...
Your Star: _____________________ d = 1 / p
... * Normally, we compare the brightness to another (distant) star instead of the Sun, since the Sun is obviously much brighter and closer than other stars. We use the Sun here because we want to use solar units throughout. ...
... * Normally, we compare the brightness to another (distant) star instead of the Sun, since the Sun is obviously much brighter and closer than other stars. We use the Sun here because we want to use solar units throughout. ...
SNC 1D Astonomy
... revolution around the sun is 365.24 days. • It takes one day for Earth to make one rotation on its axis. • The first clocks were pillars and sticks in the ground and people used the shadows they made to tell the time. ...
... revolution around the sun is 365.24 days. • It takes one day for Earth to make one rotation on its axis. • The first clocks were pillars and sticks in the ground and people used the shadows they made to tell the time. ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.