Aging nearby spiral galaxies using H
... “Stellar thermostat” : pressure vs gravity » Large star = weak surface gravity → outer layers loosely held → puff off as star ages ...
... “Stellar thermostat” : pressure vs gravity » Large star = weak surface gravity → outer layers loosely held → puff off as star ages ...
PowerPoint file - Northwest Creation Network
... “There is a fundamental and insuperable difficulty with the model as described. A striking characteristic of the solar system is that the planets with about 1/700th of the mass of the system, in their orbital motion account for over 99% of its angular momentum. There seems to be no way in which an i ...
... “There is a fundamental and insuperable difficulty with the model as described. A striking characteristic of the solar system is that the planets with about 1/700th of the mass of the system, in their orbital motion account for over 99% of its angular momentum. There seems to be no way in which an i ...
Mod three revision
... • mercury has been known since least the time of the Sumerians (3rd million bc) • the greeks gave mercury two • names,hermes as an evening star,Apollo for its morning star ...
... • mercury has been known since least the time of the Sumerians (3rd million bc) • the greeks gave mercury two • names,hermes as an evening star,Apollo for its morning star ...
The Magnitude Scale
... from a given source (energy per unit area per unit time per unit bandwidth), then the apparent magnitude of the object is defined by Fν m = −2.5 log10 0 Fν where Fν is the flux per unit frequency received from the source, and F ν0 is a normalising constant. The normalising constants have been calibr ...
... from a given source (energy per unit area per unit time per unit bandwidth), then the apparent magnitude of the object is defined by Fν m = −2.5 log10 0 Fν where Fν is the flux per unit frequency received from the source, and F ν0 is a normalising constant. The normalising constants have been calibr ...
65008_StarFinderPart2
... What unique feature can be easily found in the Big Dipper, aka Ursa Major? In what other constellation might you find a double star? ...
... What unique feature can be easily found in the Big Dipper, aka Ursa Major? In what other constellation might you find a double star? ...
Unit 1 - UW Madison Astronomy Department
... Exploding white dwarfs (supernovae type Ia) provide good standard candle as ...
... Exploding white dwarfs (supernovae type Ia) provide good standard candle as ...
White Dwarfs
... Globular clusters formed 12-14 billion years ago. Useful info for studying the history of the Milky Way Galaxy. ...
... Globular clusters formed 12-14 billion years ago. Useful info for studying the history of the Milky Way Galaxy. ...
Astronomy Mastery Objectives Semester Exam Review Kepler Telescope
... energy produced at the core will balance the inward force of gravity and the star will become stable and live most of its life as a Main Sequence star. In later years, when nuclear fusion at the core ceases, the outward flow of energy will overcome the star’s inward gravitational pull and the star w ...
... energy produced at the core will balance the inward force of gravity and the star will become stable and live most of its life as a Main Sequence star. In later years, when nuclear fusion at the core ceases, the outward flow of energy will overcome the star’s inward gravitational pull and the star w ...
REVIEW FOR TEST ON THURSDAY!!!! 1. Scientist can use for
... 9. Astronauts weigh less on the Moon than they do on Earth. Which of the following best explains why astronauts weigh less on the Moon than on Earth? A. Earth’s gravity is stronger than the Moon’s. B. Astronauts have less density on the Moon. C. Astronauts have more mass on Earth than on the Moon. D ...
... 9. Astronauts weigh less on the Moon than they do on Earth. Which of the following best explains why astronauts weigh less on the Moon than on Earth? A. Earth’s gravity is stronger than the Moon’s. B. Astronauts have less density on the Moon. C. Astronauts have more mass on Earth than on the Moon. D ...
Peer Instruction/Active Learning
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
ASTR-1020: Astronomy II Course Lecture Notes Section III
... Example III–7. We measure the trigonometric parallax of a visual binary star as 0.20 arcsec and measure an angular separation between the pair of stars in this binary as 5 arcsec. Over a few years of observations, we determine the orbital period of this pair to be 30 years. What is the combined mass ...
... Example III–7. We measure the trigonometric parallax of a visual binary star as 0.20 arcsec and measure an angular separation between the pair of stars in this binary as 5 arcsec. Over a few years of observations, we determine the orbital period of this pair to be 30 years. What is the combined mass ...
Introducing the Sun-Earth
... • Our Solar system is just a small part of the “Milky Way” galaxy. • Our sun is just an “average star” and one of 100 billion or so stars in our galaxy. Joined by billions of other galaxies in the universe. • The term “average star” is how astronomers classify stars by temperature, luminosity, and ...
... • Our Solar system is just a small part of the “Milky Way” galaxy. • Our sun is just an “average star” and one of 100 billion or so stars in our galaxy. Joined by billions of other galaxies in the universe. • The term “average star” is how astronomers classify stars by temperature, luminosity, and ...
Reminder: Assignments are due back to teachers within 2 school days.
... *Reminder: Assignments are due back to teachers within 2 school days. ...
... *Reminder: Assignments are due back to teachers within 2 school days. ...
![ASTRONOMY 101 SAMPLE FIRST EXAM [1] Kepler`s Law relating](http://s1.studyres.com/store/data/017742958_1-c5c5f19bce1080c6ad7c1fc92906a06f-300x300.png)
ASTRONOMY 101 SAMPLE FIRST EXAM [1] Kepler`s Law relating
... (c) showed planet orbits are elliptical [6] Ptolomy (d) advocated a sun-centered system, showed that Jupiter had moons and our moon had jagged peaks. [7] Aristotle (e) Perfected an accurate geocentric system, used for 1500 years. Greek Measurement, modeling and diagrams Match the name with the diagr ...
... (c) showed planet orbits are elliptical [6] Ptolomy (d) advocated a sun-centered system, showed that Jupiter had moons and our moon had jagged peaks. [7] Aristotle (e) Perfected an accurate geocentric system, used for 1500 years. Greek Measurement, modeling and diagrams Match the name with the diagr ...
Earth in Space - Sciwebhop.net
... the ''fingerprint" of an particular element the elements in an object can be identified from these lines. the lines are shifted towards the red end of the spectrum - doppler shifted indicating that the stellar objects are moving away from us at very high speed The unverse might have been created in ...
... the ''fingerprint" of an particular element the elements in an object can be identified from these lines. the lines are shifted towards the red end of the spectrum - doppler shifted indicating that the stellar objects are moving away from us at very high speed The unverse might have been created in ...
Starlight & Stars - Wayne State University Physics and Astronomy
... Ionized helium and metals; hydrogen very weak Neutral helium, ionized metals; hydrogen stronger Hydrogen strongest; singly-ionized metals ...
... Ionized helium and metals; hydrogen very weak Neutral helium, ionized metals; hydrogen stronger Hydrogen strongest; singly-ionized metals ...
Earth Science – Quiz 2
... A) 3 times those on Earth; major gases are water vapor and carbon dioxide B) 0.1 times those on Earth; major gases are water vapor and carbon dioxide C) one-half those on Earth; main gases are methane and nitrogen D) 1.5 times those on Earth; main gases are methane and nitrogen 39. Which one of the ...
... A) 3 times those on Earth; major gases are water vapor and carbon dioxide B) 0.1 times those on Earth; major gases are water vapor and carbon dioxide C) one-half those on Earth; main gases are methane and nitrogen D) 1.5 times those on Earth; main gases are methane and nitrogen 39. Which one of the ...
Handout Life of Stars
... variety of atoms we see in the universe around us. The Sun’s own gravity traps and squeezes this ultra-hot gas into a confined space, thus generating enough heat for the fusion reaction to take place. The process remains in equilibrium as long as it retains enough fuel to create this heat- and light ...
... variety of atoms we see in the universe around us. The Sun’s own gravity traps and squeezes this ultra-hot gas into a confined space, thus generating enough heat for the fusion reaction to take place. The process remains in equilibrium as long as it retains enough fuel to create this heat- and light ...
Exercise 7
... Introduction: By looking at an apparently flat background of stars at night or at a star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of ...
... Introduction: By looking at an apparently flat background of stars at night or at a star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of ...
Measuring Distance in our Universe. Due Tue 1 Dec 2009 Imagine
... large that kilometers aren’t very practical units. Astronomers use the unit called a light-year to measure distances between stars and across the universe. A light-year is the distance that light travels in one year, about 9.5 million million kilometers. Make sure you realize a light-year is a unit ...
... large that kilometers aren’t very practical units. Astronomers use the unit called a light-year to measure distances between stars and across the universe. A light-year is the distance that light travels in one year, about 9.5 million million kilometers. Make sure you realize a light-year is a unit ...
Nearby Constellations
... Half-hour time exposure facing north & west. The stars are tracing counter-clockwise circles, centered on a point near the prominent North Star (Polaris). Notice the Big Dipper at the lower-left. ...
... Half-hour time exposure facing north & west. The stars are tracing counter-clockwise circles, centered on a point near the prominent North Star (Polaris). Notice the Big Dipper at the lower-left. ...
The Night Sky
... As promised in last month’s article, the world did not end on December 21, 2012. As the year 2013 begins, the earth passes through perihelion on January 2nd, its closest point to the sun in its elliptical orbit. On this date, it is 3% closer to the sun as compared to its farthest point, or aphelion, ...
... As promised in last month’s article, the world did not end on December 21, 2012. As the year 2013 begins, the earth passes through perihelion on January 2nd, its closest point to the sun in its elliptical orbit. On this date, it is 3% closer to the sun as compared to its farthest point, or aphelion, ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.