Lecture 8a Star Formation 10/15/2014
... (1 g water = 1023 atoms) Local concentrations can be compressed by gravity and form stars. Called Giant Molecular Clouds as even complicated molecules have been observed. Need about 1,000,000 times the mass of the Sun in 100 LY volume to initiate star formation PHYS 162 Lecture 8a ...
... (1 g water = 1023 atoms) Local concentrations can be compressed by gravity and form stars. Called Giant Molecular Clouds as even complicated molecules have been observed. Need about 1,000,000 times the mass of the Sun in 100 LY volume to initiate star formation PHYS 162 Lecture 8a ...
The Galactic Environment of the Sun
... Given that the solar wind is itself a variable phenomenon (changing in strength periodically with an 11-year solar cycle), the relation between the solar wind and the invading particles from the interstellar medium is in constant flux. Sorting out the complex interplay between these dynamic phenomen ...
... Given that the solar wind is itself a variable phenomenon (changing in strength periodically with an 11-year solar cycle), the relation between the solar wind and the invading particles from the interstellar medium is in constant flux. Sorting out the complex interplay between these dynamic phenomen ...
solar system - National Geographic Society
... A NOTE ABOUT THE SOLAR SYSTEM GIANT TRAVELING MAP ...
... A NOTE ABOUT THE SOLAR SYSTEM GIANT TRAVELING MAP ...
Homework #3, AST 203, Spring 2010
... temperature of a world by a factor of 21/4 or about 1.2. If Titan’s atmosphere were a perfect greenhouse, what would you expect Titan’s surface temperature to be? Solution: For a perfect greenhouse, the temperature would be 21/4 times larger, or 101 K (100K is ok too). d) (2 points) Earth’s average ...
... temperature of a world by a factor of 21/4 or about 1.2. If Titan’s atmosphere were a perfect greenhouse, what would you expect Titan’s surface temperature to be? Solution: For a perfect greenhouse, the temperature would be 21/4 times larger, or 101 K (100K is ok too). d) (2 points) Earth’s average ...
Chapter 24: Earth, Moon, and Sun Planet Earth
... Earth and the other planets in the solar system make regular orbits around the Sun; the orbital path is an ellipse and is controlled by gravity. During one revolution around the Sun, the Earth travels at an average distance of about 150 million kilometers. Mercury and Venus take shorter times to orb ...
... Earth and the other planets in the solar system make regular orbits around the Sun; the orbital path is an ellipse and is controlled by gravity. During one revolution around the Sun, the Earth travels at an average distance of about 150 million kilometers. Mercury and Venus take shorter times to orb ...
Exercise 7.0
... year and watch the changing declination of the Sun result in a different diurnal circle from one day to the next. You can speed up this motion by changing the step size to one hour. Press the space bar occasionally to get a readout of the right ascension (RA) and declination (DEC) of the Sun. Pay at ...
... year and watch the changing declination of the Sun result in a different diurnal circle from one day to the next. You can speed up this motion by changing the step size to one hour. Press the space bar occasionally to get a readout of the right ascension (RA) and declination (DEC) of the Sun. Pay at ...
8th Ed【CH13】
... 8th Ed【Problem 13-56】：9th Ed【Problem 13-54】 Hunting a black hole. Observations of the light from a certain star indicate that it is part of a binary (two-star) system. This visible star has orbital speed v = 270km / s , orbital period T = 1.7days , and approximate mass m1 = 6M S , where M S is the S ...
... 8th Ed【Problem 13-56】：9th Ed【Problem 13-54】 Hunting a black hole. Observations of the light from a certain star indicate that it is part of a binary (two-star) system. This visible star has orbital speed v = 270km / s , orbital period T = 1.7days , and approximate mass m1 = 6M S , where M S is the S ...
Poor Pluto: Everyone`s favorite dwarf planet
... how astronomers classify objects and how new discoveries are constantly changing the field. Ninth no more "Solar System Adventure" is one of two shows at the planetarium that still mention Pluto, which was the ninth planet until recently. When the IAU drafted a new definition for "planet" in 2006 -- ...
... how astronomers classify objects and how new discoveries are constantly changing the field. Ninth no more "Solar System Adventure" is one of two shows at the planetarium that still mention Pluto, which was the ninth planet until recently. When the IAU drafted a new definition for "planet" in 2006 -- ...
Lecture 13 Main Sequence and Low Mass Evolution
... • The higher the mass, the shorter its life. • Examples: Sun: ~ 10 Billion Years 30 Msun O‐star: ~ 2 Million years 0.1 Msun M‐star: ~ 3 Trillion years ...
... • The higher the mass, the shorter its life. • Examples: Sun: ~ 10 Billion Years 30 Msun O‐star: ~ 2 Million years 0.1 Msun M‐star: ~ 3 Trillion years ...
The physics of projectiles
... The mission of this satellite is to map the Earth’s gravitational field in greater detail than has previously been possible. This data will be used to: inform predictions of climate understand and monitor the effects of climate change, making accurate measurements of ocean circulation and sea level ...
... The mission of this satellite is to map the Earth’s gravitational field in greater detail than has previously been possible. This data will be used to: inform predictions of climate understand and monitor the effects of climate change, making accurate measurements of ocean circulation and sea level ...
12 The Milky Way - Journigan-wiki
... from interstellar gas caught between the spiral arms of galaxies. The strong gravitational fields compress the gas creating stars that are gravitationally bound together. These clusters eventually break apart. Approximately 20,000 star clusters are believed to exist in the Milky Way. Our own Sun may ...
... from interstellar gas caught between the spiral arms of galaxies. The strong gravitational fields compress the gas creating stars that are gravitationally bound together. These clusters eventually break apart. Approximately 20,000 star clusters are believed to exist in the Milky Way. Our own Sun may ...
Detection of water ice on Nereid
... spectrum of Neptune’s distant irregular satellite Nereid. The spectrum and albedo of Nereid appear intermediate between those of the Uranian satellites Umbriel and Oberon, suggesting a surface composed of a combination of water ice frost and a dark and spectrally neutral material. In contrast, the s ...
... spectrum of Neptune’s distant irregular satellite Nereid. The spectrum and albedo of Nereid appear intermediate between those of the Uranian satellites Umbriel and Oberon, suggesting a surface composed of a combination of water ice frost and a dark and spectrally neutral material. In contrast, the s ...
Rigorous Curriculum Design
... “UNWRAPPED” Priority Standards 1.E.1.1 Students know that objects in the sky have patterns of movement. Students know the sun is a star that can only be seen in the daytime, but the moon can be seen sometimes at night and sometimes during the day. Students know there are more stars in the sky than a ...
... “UNWRAPPED” Priority Standards 1.E.1.1 Students know that objects in the sky have patterns of movement. Students know the sun is a star that can only be seen in the daytime, but the moon can be seen sometimes at night and sometimes during the day. Students know there are more stars in the sky than a ...
“Here Comes the Sun” How the new
... contain mathematical treatments of various aspects of Newtonian celestial mechanics which purport to show the dynamic as well as the well-accepted kinematic equivalence of heliocentric and geocentric descriptions of the solar system. I show that not only does Sungenis fail to demonstrate this dynami ...
... contain mathematical treatments of various aspects of Newtonian celestial mechanics which purport to show the dynamic as well as the well-accepted kinematic equivalence of heliocentric and geocentric descriptions of the solar system. I show that not only does Sungenis fail to demonstrate this dynami ...
Slide 1
... B.) Orbits sun 165 Earth Years C.) Softest winds in the solar system of 12 mph D.) 4 faint rings. E.) 13+? Moons ...
... B.) Orbits sun 165 Earth Years C.) Softest winds in the solar system of 12 mph D.) 4 faint rings. E.) 13+? Moons ...
Teachers Edition Sample Chapter (1.2MB PDF)
... darker spots contained water, so he called them maria, which is the Latin word for “seas.” Now scientists believe these darker areas were formed by lava flows that cooled and hardened. Although we know they don’t contain water, the name maria has stuck. If you have looked at the Moon, you may have n ...
... darker spots contained water, so he called them maria, which is the Latin word for “seas.” Now scientists believe these darker areas were formed by lava flows that cooled and hardened. Although we know they don’t contain water, the name maria has stuck. If you have looked at the Moon, you may have n ...
Notes for Class 5, February 16
... Proof in mathematics and geometry • Postulate #4: all right angles (90º) are equal • Common notion #1: things equal to the same thing are equal. If a = c and b = c then a = b • Common notion #3: if equals are subtracted from equals then the remainders are equal. If a = b then a – c = b – c. ...
... Proof in mathematics and geometry • Postulate #4: all right angles (90º) are equal • Common notion #1: things equal to the same thing are equal. If a = c and b = c then a = b • Common notion #3: if equals are subtracted from equals then the remainders are equal. If a = b then a – c = b – c. ...
The Milky Way Galaxy is Heading for a Major Cosmic Collision
... – It may even hit the Milky Way first (9% probability) – Or it could escape from the Local Group (7% probability) ...
... – It may even hit the Milky Way first (9% probability) – Or it could escape from the Local Group (7% probability) ...
The Milky Way Galaxy
... gas. This gas is extremely heavily polluted by eject a from stars: if it were compressed to the density of air (i.e., by a factor ~ 1021 ) one could see only a few cm through it because light is absorbed by particles of dust (a better name might be smoke) suspended in the gas. Even at the extremely ...
... gas. This gas is extremely heavily polluted by eject a from stars: if it were compressed to the density of air (i.e., by a factor ~ 1021 ) one could see only a few cm through it because light is absorbed by particles of dust (a better name might be smoke) suspended in the gas. Even at the extremely ...
MAIN SEQUENCE STARS, Red Giants and White Dwarfs
... Supergiants for Higher Mass Stars • For more massive stars the same thing happens, but the star starts way up on the H-R diagram, and it enters the SUPERGIANT phase. • The ESCAPE VELOCITY from such big stars gets low: Vesc = (2 G M / R)1/2 as R increases while M stays the same. • They lose a lot of ...
... Supergiants for Higher Mass Stars • For more massive stars the same thing happens, but the star starts way up on the H-R diagram, and it enters the SUPERGIANT phase. • The ESCAPE VELOCITY from such big stars gets low: Vesc = (2 G M / R)1/2 as R increases while M stays the same. • They lose a lot of ...
The Bigger Picture
... • The parallax effect is the apparent motion of a nearby object compared to distant background objects because of a change in viewing angle. • Put a finger in front of your nose and watch it move with respect to the back of the room as you look through one eye and then the other. ...
... • The parallax effect is the apparent motion of a nearby object compared to distant background objects because of a change in viewing angle. • Put a finger in front of your nose and watch it move with respect to the back of the room as you look through one eye and then the other. ...
learning objectives Earth Science
... 1. Name and describe nebular theory/protoplanet hypothesis and age of solar system 2. Describe inner, terrestrial planets and contrast those with atmospheres and those without atmospheres 3. Describe jovian, gas giant planets and contrast with inner planets 4. locate and describe asteroid belt, come ...
... 1. Name and describe nebular theory/protoplanet hypothesis and age of solar system 2. Describe inner, terrestrial planets and contrast those with atmospheres and those without atmospheres 3. Describe jovian, gas giant planets and contrast with inner planets 4. locate and describe asteroid belt, come ...
Understanding Stars
... In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives recipes for calculating, in physical units, the properties of any star based only on its s ...
... In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives recipes for calculating, in physical units, the properties of any star based only on its s ...
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.