RMH_Stellar_Evolution_Ast2001_09_29_09
... Mass -- with luminosity + physics , mass – luminosity relation ...
... Mass -- with luminosity + physics , mass – luminosity relation ...
Wilmslow Guild Lecture 2008
... distance of more distant stars, simply because they are too small. In 1912, a startling discovery was made by Henrietta Swan Leavitt (18681921), one of the greatest unsung heroines of astronomy (there are several others). She discovered that a particular kind of star called a Cepheid Variable varies ...
... distance of more distant stars, simply because they are too small. In 1912, a startling discovery was made by Henrietta Swan Leavitt (18681921), one of the greatest unsung heroines of astronomy (there are several others). She discovered that a particular kind of star called a Cepheid Variable varies ...
Stars and their Properties
... Stars are so far away so it’s safe to look at them All stars are made up of 75% hydrogen and 25% helium Parallax – Apparent movement of an object based on your own movement You cannot see parallax with the naked eye LARGEST Parallax measurements are 1/3600th of a degree!! 1/60th of a degree = 1 arc ...
... Stars are so far away so it’s safe to look at them All stars are made up of 75% hydrogen and 25% helium Parallax – Apparent movement of an object based on your own movement You cannot see parallax with the naked eye LARGEST Parallax measurements are 1/3600th of a degree!! 1/60th of a degree = 1 arc ...
August 2013 - Joliet Junior College
... more than 108 times larger than our sun. Distance estimations vary, but 1,700 light years is about average. That means if you were on Deneb with a telescope large enough to see Earth, you would see what was going on in the year 313. The light reflecting off Earth, along with the light reflected off ...
... more than 108 times larger than our sun. Distance estimations vary, but 1,700 light years is about average. That means if you were on Deneb with a telescope large enough to see Earth, you would see what was going on in the year 313. The light reflecting off Earth, along with the light reflected off ...
VARIATIONS IN SOLAR RADIATION AND THE CAUSE OF ICE AGES
... addition a vast amount of circumstantial evidence from almost every branch of theoretical astronomy. The existence of interstellar matter was already well known, but for various reasons hydrogen does not reveal its presence (mass for mass) as plainly as do many other elements, such as calcium and so ...
... addition a vast amount of circumstantial evidence from almost every branch of theoretical astronomy. The existence of interstellar matter was already well known, but for various reasons hydrogen does not reveal its presence (mass for mass) as plainly as do many other elements, such as calcium and so ...
Studying Space Section 2
... • In the 19th century, the scientist Jean-Bernard-Leon Foucault, provided evidence of Earth’s rotation by using a pendulum. • The path of the pendulum appeared to change over time. However, it was the floor that was moving while the pendulum’s path stayed constant. The Coriolis Effect • The rotation ...
... • In the 19th century, the scientist Jean-Bernard-Leon Foucault, provided evidence of Earth’s rotation by using a pendulum. • The path of the pendulum appeared to change over time. However, it was the floor that was moving while the pendulum’s path stayed constant. The Coriolis Effect • The rotation ...
1 1. The Solar System
... Since we want to make precise photometry it would be desirable to have a S/N=100 at least. Therefore we need to find out how much we have to increase the exposure time in order to obtain this S/N ratio. Since the 14.5mag star has S/N=200 at 4sec exposure, a 17.0mag is 10 times less bright (17mag- 14 ...
... Since we want to make precise photometry it would be desirable to have a S/N=100 at least. Therefore we need to find out how much we have to increase the exposure time in order to obtain this S/N ratio. Since the 14.5mag star has S/N=200 at 4sec exposure, a 17.0mag is 10 times less bright (17mag- 14 ...
A Tour of our Solar System
... Saturn's rings are made mostly of dust and rocks the size of a baseball or smaller. There has been a lot of study done to understand why they exist. The jury is still out, but there are ideas about gravity and Saturn’s magnetic field. ...
... Saturn's rings are made mostly of dust and rocks the size of a baseball or smaller. There has been a lot of study done to understand why they exist. The jury is still out, but there are ideas about gravity and Saturn’s magnetic field. ...
Use Example problem 8-2 to solve practice
... new Danish king, Brahe moved to Prague. He became the astronomer to the court of Emperor Rudolph of Bohemia where, in 1600, a nineteen-year-old German Johannes Kepler (1571-1630) became one of his assistants. Although Brahe still believed strongly that Earth was the center of the universe, Kepler wa ...
... new Danish king, Brahe moved to Prague. He became the astronomer to the court of Emperor Rudolph of Bohemia where, in 1600, a nineteen-year-old German Johannes Kepler (1571-1630) became one of his assistants. Although Brahe still believed strongly that Earth was the center of the universe, Kepler wa ...
Chapter 4: The Solar System
... where various materials condense out; this determines where rocky planets and gas giants form. ...
... where various materials condense out; this determines where rocky planets and gas giants form. ...
PART A: MULTIPLE CHOICE (40 MARKS: 40 Minutes)
... Hydrologic Cycle d. Run-off 29. Which planet can be seen in the night sky without a telescope? a. Venus b. Mars c. Jupiter d. Saturn e. All of the above 30. What is the term for an organism that CANNOT make its own food? a. Producer b. Omnivore c. Consumer d. Herbivore 31. Which of the following is ...
... Hydrologic Cycle d. Run-off 29. Which planet can be seen in the night sky without a telescope? a. Venus b. Mars c. Jupiter d. Saturn e. All of the above 30. What is the term for an organism that CANNOT make its own food? a. Producer b. Omnivore c. Consumer d. Herbivore 31. Which of the following is ...
Your Birthday on Another Planet
... ❶ In front of the class, explain the steps for assembling the solar system flip book: • Glue the photocopies of the planetary orbit sheets (Appendix 1) onto thick paper. • On each of the illustrations numbered 1 to 24, colour the Sun and four planets (Sun = yellow; Mercury = green; Venus = brown; Ea ...
... ❶ In front of the class, explain the steps for assembling the solar system flip book: • Glue the photocopies of the planetary orbit sheets (Appendix 1) onto thick paper. • On each of the illustrations numbered 1 to 24, colour the Sun and four planets (Sun = yellow; Mercury = green; Venus = brown; Ea ...
Earth, Moon & Sun System
... Solar Motion • When the northern axis is leaning away from the sun, the northern hemisphere gets the least direct rays • Because of the position of earth in its revolution, days are shorter so the earth has less time to absorb energy from the sun so the days are cooler. ...
... Solar Motion • When the northern axis is leaning away from the sun, the northern hemisphere gets the least direct rays • Because of the position of earth in its revolution, days are shorter so the earth has less time to absorb energy from the sun so the days are cooler. ...
Sama (Sky) | Questions on Islam
... The stars will gradually cool down and shrink because they get the energy to radiate from nucleus cohesions and thus losing their masses. Finally, as a result of shrinking, they will disperse because they will break free from the mutual gravitation force. Any two masses in the space attract each oth ...
... The stars will gradually cool down and shrink because they get the energy to radiate from nucleus cohesions and thus losing their masses. Finally, as a result of shrinking, they will disperse because they will break free from the mutual gravitation force. Any two masses in the space attract each oth ...
The Dead Guys a.k.a: The development of astronomy
... Astronomy used for positioning of the pyramids Vents & passageways align with specific stars Pyramids are slightly off Divide the sky into constellations These are known as star clocks “Diagonal calendars” Calendars – 3 seasons ...
... Astronomy used for positioning of the pyramids Vents & passageways align with specific stars Pyramids are slightly off Divide the sky into constellations These are known as star clocks “Diagonal calendars” Calendars – 3 seasons ...
Document
... 17. As you move east from one time zone to the next, you move your watch • ahead 1 hour 18. The amount of time it takes the moon to make one complete rotation and revolution is • 27.3 days 19. When more than half of the moon is visible from the earth, the moon is in its • Gibbous phase 20. When the ...
... 17. As you move east from one time zone to the next, you move your watch • ahead 1 hour 18. The amount of time it takes the moon to make one complete rotation and revolution is • 27.3 days 19. When more than half of the moon is visible from the earth, the moon is in its • Gibbous phase 20. When the ...
Then another Big Bang will occur and the
... As objects move away from the Earth they emit a Red Light called the Red Shift. This was seen using the Hubble Telescope. ...
... As objects move away from the Earth they emit a Red Light called the Red Shift. This was seen using the Hubble Telescope. ...
Where`s Earth 2.0? - Institute of Astronomy
... For the past 20 years, since the discovery of planets outside our solar system, we have been searching for Earth 2.0. In this talk we’ll explore what makes our own planet Earth such a haven for life and what this really means for the habitability of Earth 2.0. We’ll be talking about our solar syste ...
... For the past 20 years, since the discovery of planets outside our solar system, we have been searching for Earth 2.0. In this talk we’ll explore what makes our own planet Earth such a haven for life and what this really means for the habitability of Earth 2.0. We’ll be talking about our solar syste ...
Rotary Homework #1
... are 0.25 m apart. Their total mass is 4.0 kg. Find their individual masses. ...
... are 0.25 m apart. Their total mass is 4.0 kg. Find their individual masses. ...
The universe
... Measuring the distance through the universe: The distance between stars are very large, so the distance in the far space are not measured in kilometers, but they are measured in a unit called “light year”. Light year: It is the distance covered by light in one year and it is equal 300000 km per seco ...
... Measuring the distance through the universe: The distance between stars are very large, so the distance in the far space are not measured in kilometers, but they are measured in a unit called “light year”. Light year: It is the distance covered by light in one year and it is equal 300000 km per seco ...
Asteroids, Comets, Meteors…what`s the difference
... Asteroids, Comets, Meteors…what’s the difference? Astronomy Name: ...
... Asteroids, Comets, Meteors…what’s the difference? Astronomy Name: ...
File - Mr. Wadnizak
... the right speed to be affected by the gravity, but not be pulled into the larger object. Because gravity weakens with distance, we are more affected by the gravity of the Earth than the Sun. ...
... the right speed to be affected by the gravity, but not be pulled into the larger object. Because gravity weakens with distance, we are more affected by the gravity of the Earth than the Sun. ...
Planets
... around the sun in closed elliptical paths called orbits. The planets shine because they reflect the light of the sun which falls on them.The easiest way to distinguish planets from the stars in the night sky is that the stars twinkle at night but the planets do not twinkle at night.The planets move ...
... around the sun in closed elliptical paths called orbits. The planets shine because they reflect the light of the sun which falls on them.The easiest way to distinguish planets from the stars in the night sky is that the stars twinkle at night but the planets do not twinkle at night.The planets move ...
Origin of Mountains and Primary Initiation of Submarine Canyons
... various ideas have been put forward. Generally, concepts of planetary formation fall into one of two categories that involve either (1) condensation at high-pressures, hundreds to thousands times the pressure of our atmosphere at Earth’s surface; or (2) condensation at very, very lowpressures. Since ...
... various ideas have been put forward. Generally, concepts of planetary formation fall into one of two categories that involve either (1) condensation at high-pressures, hundreds to thousands times the pressure of our atmosphere at Earth’s surface; or (2) condensation at very, very lowpressures. Since ...
The Basics of the Universe
... was to fall into it would be spaghettified, a term used to describe the process of entering a black hole. It would be stretched apart, including the atoms! Even though you cannot see these atoms, you may see them with other matter if they are ejected out at the poles. Black holes that do this are ca ...
... was to fall into it would be spaghettified, a term used to describe the process of entering a black hole. It would be stretched apart, including the atoms! Even though you cannot see these atoms, you may see them with other matter if they are ejected out at the poles. Black holes that do this are ca ...
Geocentric model
In astronomy, the geocentric model (also known as geocentrism, or the Ptolemaic system) is a description of the cosmos where Earth is at the orbital center of all celestial bodies. This model served as the predominant cosmological system in many ancient civilizations such as ancient Greece including the noteworthy systems of Aristotle (see Aristotelian physics) and Ptolemy. As such, they believed that the Sun, Moon, stars, and naked eye planets circled Earth.Two commonly made observations supported the idea that Earth was the center of the Universe. The stars, the sun, and planets appear to revolve around Earth each day, making Earth the center of that system. The stars were thought to be on a celestial sphere, with the earth at its center, that rotated each day, using a line through the north and south pole as an axis. The stars closest to the equator appeared to rise and fall the greatest distance, but each star circled back to its rising point each day. The second observation supporting the geocentric model was that the Earth does not seem to move from the perspective of an Earth-bound observer, and that it is solid, stable, and unmoving.Ancient Roman and medieval philosophers usually combined the geocentric model with a spherical Earth. It is not the same as the older flat Earth model implied in some mythology, as was the case with the biblical and postbiblical Latin cosmology. The ancient Jewish Babylonian uranography pictured a flat Earth with a dome-shaped rigid canopy named firmament placed over it. (רקיע- rāqîa').However, the ancient Greeks believed that the motions of the planets were circular and not elliptical, a view that was not challenged in Western culture until the 17th century through the synthesis of theories by Copernicus and Kepler.The astronomical predictions of Ptolemy's geocentric model were used to prepare astrological and astronomical charts for over 1500 years. The geocentric model held sway into the early modern age, but from the late 16th century onward was gradually superseded by the heliocentric model of Copernicus, Galileo and Kepler. There was much resistance to the transition between these two theories. Christian theologians were reluctant to reject a theory that agreed with Bible passages (e.g. ""Sun, stand you still upon Gibeon"", Joshua 10:12 – King James 2000 Bible). Others felt a new, unknown theory could not subvert an accepted consensus for geocentrism.