Basic Observations of the Night Sky
... • In winter, we are tilted away – lower height to the Sun and shorter days ...
... • In winter, we are tilted away – lower height to the Sun and shorter days ...
Earth
... The Earth is surrounded by a magnetosphere, a region of strong magnetic forces that extends upward from about 140 km in the upper atmosphere. In the magnetosphere, the magnetic field of the Earth traps rapidly moving charged particles, the majority of which appear to be emitted by the Sun during per ...
... The Earth is surrounded by a magnetosphere, a region of strong magnetic forces that extends upward from about 140 km in the upper atmosphere. In the magnetosphere, the magnetic field of the Earth traps rapidly moving charged particles, the majority of which appear to be emitted by the Sun during per ...
MS Word
... subcatagories. Thus you can have a B2 star, as well as a G8 star. There are A0 stars and F7 stars. Look at each of the tables and under ‘spectral type’ you will see these classifications. Remember that B0 stars are the hottest and M9 stars are the coolest. Thus the left side of an H-R diagram is for ...
... subcatagories. Thus you can have a B2 star, as well as a G8 star. There are A0 stars and F7 stars. Look at each of the tables and under ‘spectral type’ you will see these classifications. Remember that B0 stars are the hottest and M9 stars are the coolest. Thus the left side of an H-R diagram is for ...
Life Histories Of Some Stars
... massive stars compared to the life spans of less massive stars? Since the age of the universe is about 15 billion years, what does this say about the kind of stars most likely to have remained from the beginnings of the universe? What’s Going On? In this activity, you can see that the very massive s ...
... massive stars compared to the life spans of less massive stars? Since the age of the universe is about 15 billion years, what does this say about the kind of stars most likely to have remained from the beginnings of the universe? What’s Going On? In this activity, you can see that the very massive s ...
Life Histories Stars
... massive stars compared to the life spans of less massive stars? Since the age of the universe is about 15 billion years, what does this say about the kind of stars most likely to have remained from the beginnings of the universe? What’s Going On? In this activity, you can see that the very massive s ...
... massive stars compared to the life spans of less massive stars? Since the age of the universe is about 15 billion years, what does this say about the kind of stars most likely to have remained from the beginnings of the universe? What’s Going On? In this activity, you can see that the very massive s ...
Opposition of Saturn - Hong Kong Observatory
... Figure 1 Relative positions of a superior planet, the Earth and the Sun during opposition and conjunction of the superior planet. Opposition of Saturn Saturn is the second largest planet in the Solar System and the sixth planet away from the Sun. Saturn is characterized by the Saturn ring, wh ...
... Figure 1 Relative positions of a superior planet, the Earth and the Sun during opposition and conjunction of the superior planet. Opposition of Saturn Saturn is the second largest planet in the Solar System and the sixth planet away from the Sun. Saturn is characterized by the Saturn ring, wh ...
Extra-Solar Planets
... radial velocity monitoring in 1995. The data imply the presence of a planet with - a roughly circular orbit - a distance of 0.052 A.U. - a mass of 0.46 MJup It’s like a very hot Jupiter! ...
... radial velocity monitoring in 1995. The data imply the presence of a planet with - a roughly circular orbit - a distance of 0.052 A.U. - a mass of 0.46 MJup It’s like a very hot Jupiter! ...
Stars - Robert M. Hazen
... Stars have a history – a beginning and an end 1. Stars (and planets) begin as clouds of dust and gas, called nebulae. 2. Stars radiate heat and light, which come from the energy of nuclear fusion reactions. 3. Planets form like stars, but they are too small to begin nuclear fusion reactions. ...
... Stars have a history – a beginning and an end 1. Stars (and planets) begin as clouds of dust and gas, called nebulae. 2. Stars radiate heat and light, which come from the energy of nuclear fusion reactions. 3. Planets form like stars, but they are too small to begin nuclear fusion reactions. ...
Life Histories Of Some Stars
... each other and fuse. So even though larger stars have more hydrogen reserves, they fuse hydrogen into helium at a much higher rate. This explains why large stars don’t spend much time as main sequence stars (compared to smaller stars). Finally, large stars have quick and explosive deaths compared to ...
... each other and fuse. So even though larger stars have more hydrogen reserves, they fuse hydrogen into helium at a much higher rate. This explains why large stars don’t spend much time as main sequence stars (compared to smaller stars). Finally, large stars have quick and explosive deaths compared to ...
Word version with live links
... science view eg Hardy and Bonestall – book are available for lone on these topics. Stars These have a life cycle from birth to death when they seem to either collapse in on themselves and then explode, or just explode. By all accounts, we are safe for a good while because our own sun is fairly insig ...
... science view eg Hardy and Bonestall – book are available for lone on these topics. Stars These have a life cycle from birth to death when they seem to either collapse in on themselves and then explode, or just explode. By all accounts, we are safe for a good while because our own sun is fairly insig ...
Nebular Theory
... E5.3A Explain how the solar system formed from a nebula of dust and gas in a spiral arm of the Milky Way Galaxy about 4.6 Ga (billion years ago). ...
... E5.3A Explain how the solar system formed from a nebula of dust and gas in a spiral arm of the Milky Way Galaxy about 4.6 Ga (billion years ago). ...
Powerpoint for today
... Clumps within such clouds collapse to form stars or clusters of stars. They are spinning at about 1 km/s. ...
... Clumps within such clouds collapse to form stars or clusters of stars. They are spinning at about 1 km/s. ...
STAR FORMATION (Ch. 19) The basics: GRAVITY vs. PRESSURE
... we’ll return to this). Make sure you understand the H-R diagrams in Figs. 19.1819.19. Can you explain what determines the lifetime of a star clusters? Why do open clusters survive (on average) for a much shorter time than globular clusters? (This is actually a fairly complicated question, but a good ...
... we’ll return to this). Make sure you understand the H-R diagrams in Figs. 19.1819.19. Can you explain what determines the lifetime of a star clusters? Why do open clusters survive (on average) for a much shorter time than globular clusters? (This is actually a fairly complicated question, but a good ...
Biology: Unit One Calendar
... Describe how astronomers determine the composition and temperature of stars (2d) Explain why stars appear to move in the sky. (1d) Describe one way astronomers measure distance to stars. (1d) Explain the difference between absolute magnitude and apparent magnitude. Section 30.2 Stellar Evolu ...
... Describe how astronomers determine the composition and temperature of stars (2d) Explain why stars appear to move in the sky. (1d) Describe one way astronomers measure distance to stars. (1d) Explain the difference between absolute magnitude and apparent magnitude. Section 30.2 Stellar Evolu ...
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 ...
Fun Facts: Sunshine
... We use an instrument called a Campbell-Stokes Recorder to record sunshine. It consists of a spherical lens – a bit like a crystal ball. This glass ball focuses the sun's rays onto a cardboard strip. ...
... We use an instrument called a Campbell-Stokes Recorder to record sunshine. It consists of a spherical lens – a bit like a crystal ball. This glass ball focuses the sun's rays onto a cardboard strip. ...
Astronomy 1001/1005 Midterm (200 points) Name:
... the creation of the two very different types of planets None of the above ...
... the creation of the two very different types of planets None of the above ...
binary stars - El Camino College
... The nearest star to our Sun, Alpha Centauri, is a triple star system and is the third brightest star in the sky; however it can only be viewed from the southern hemisphere. The brightest (and largest) star in this triplet system (the A component) is a G-star, very similar to our Sun but about 30% mo ...
... The nearest star to our Sun, Alpha Centauri, is a triple star system and is the third brightest star in the sky; however it can only be viewed from the southern hemisphere. The brightest (and largest) star in this triplet system (the A component) is a G-star, very similar to our Sun but about 30% mo ...
STELLAR STRUCTURE AND EVOLUTION
... • define bolometric correction: B.C. = Mbol − MV (usually tabulated as a function of B − V colour) • visual extinction AV : absorption of visual star light due to extinction by interstellar gas/dust (can vary from ∼ 0 to 30 magnitudes [Galactic centre]) • distance modulus: (m − M)V = 5 × log D/10pc ...
... • define bolometric correction: B.C. = Mbol − MV (usually tabulated as a function of B − V colour) • visual extinction AV : absorption of visual star light due to extinction by interstellar gas/dust (can vary from ∼ 0 to 30 magnitudes [Galactic centre]) • distance modulus: (m − M)V = 5 × log D/10pc ...
NAME_______________________________________
... ____27. A Cepheid Variable star is a STANDARD CANDLE. It has a known luminosity because A) all Cepheid variables are the same size. B) it pulsates, and the rate of pulsation is directly related to its size, therefore its brightness. C) all Cepheid variables are the same exact distance away ____28. O ...
... ____27. A Cepheid Variable star is a STANDARD CANDLE. It has a known luminosity because A) all Cepheid variables are the same size. B) it pulsates, and the rate of pulsation is directly related to its size, therefore its brightness. C) all Cepheid variables are the same exact distance away ____28. O ...
Slides from Lecture06
... how strong the gravitational field is around that star. (Isaac Newton’s law of universal gravitation; §4-7) • By studying the motion of planets around our Sun, astronomers have determined that the Sun has a mass of 2 x 1030 kilograms. • We cannot measure the mass of individual, isolated ...
... how strong the gravitational field is around that star. (Isaac Newton’s law of universal gravitation; §4-7) • By studying the motion of planets around our Sun, astronomers have determined that the Sun has a mass of 2 x 1030 kilograms. • We cannot measure the mass of individual, isolated ...
20.1 A Solar System is Born
... Solar nebula – the cloud of gas and dust that formed our solar system. ...
... Solar nebula – the cloud of gas and dust that formed our solar system. ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.