Introduction: The History and Technique of Stellar Classification
... von Fraunhofer early in the 1800’s, but it was not until late in that century that astronomers were able to routinely examine the spectra of stars in large numbers. Astronomers Angelo Secchi and E.C. Pickering were among the first to note that stellar spectra could be divided into groups by their ge ...
... von Fraunhofer early in the 1800’s, but it was not until late in that century that astronomers were able to routinely examine the spectra of stars in large numbers. Astronomers Angelo Secchi and E.C. Pickering were among the first to note that stellar spectra could be divided into groups by their ge ...
Constellations activities (PDF 185KB)
... throughout the year. The constellation of Orion can be seen during summer evenings and the constellation of Scorpius is in the sky during winter evenings. Orion is found low in the eastern sky from December, sits overhead throughout February, and sinks low in the western sky come April. Scorpius ...
... throughout the year. The constellation of Orion can be seen during summer evenings and the constellation of Scorpius is in the sky during winter evenings. Orion is found low in the eastern sky from December, sits overhead throughout February, and sinks low in the western sky come April. Scorpius ...
Week 11 Concept Summary
... 6. Other galaxies: Hubble classified other galaxies in a sequence from ellipticals to spirals to irregulars. Most large galaxies are spirals, though most galaxies in general are dwarf ellipticals. Galaxies group into small groups and large clusters. In galaxy clusters, there are found many giant ell ...
... 6. Other galaxies: Hubble classified other galaxies in a sequence from ellipticals to spirals to irregulars. Most large galaxies are spirals, though most galaxies in general are dwarf ellipticals. Galaxies group into small groups and large clusters. In galaxy clusters, there are found many giant ell ...
2008oct23
... 2) draw normal force (prevents interpenetration of objects) 3) draw friction force (perpendicular to normal force) • kinetic friction: F = mkN direction opposite to relative velocity • static friction: F ≤ msN direction and magnitude to prevent relative acceleration ...
... 2) draw normal force (prevents interpenetration of objects) 3) draw friction force (perpendicular to normal force) • kinetic friction: F = mkN direction opposite to relative velocity • static friction: F ≤ msN direction and magnitude to prevent relative acceleration ...
Pictures in the Sky Teacher`s Guide
... John T. Meader, Director, (207) 453-7668 [email protected] www.northern-stars.com Pictures in the Sky Teacher’s Guide Page 10 ...
... John T. Meader, Director, (207) 453-7668 [email protected] www.northern-stars.com Pictures in the Sky Teacher’s Guide Page 10 ...
Sirius - Springer
... ▶ Explains how studies of the star Sirius have played a pivotal role in achieving our current understanding of the nature and fate of stars ▶ Demonstrates the importance of Sirius to many civilisations and cultures over thousands of years ▶ Provides an intriguing, in-depth treatment of longstanding ...
... ▶ Explains how studies of the star Sirius have played a pivotal role in achieving our current understanding of the nature and fate of stars ▶ Demonstrates the importance of Sirius to many civilisations and cultures over thousands of years ▶ Provides an intriguing, in-depth treatment of longstanding ...
2010 AP Gravitation Notes
... 36. A satellite of mass m is in an elliptical orbit around the Earth, which has mass Me and radius Re. The orbit varies from closest approach of a at point A to maximum distance of b from the center of the Earth at point B. At point A, the speed of the satellite is vo Assume that the gravitational p ...
... 36. A satellite of mass m is in an elliptical orbit around the Earth, which has mass Me and radius Re. The orbit varies from closest approach of a at point A to maximum distance of b from the center of the Earth at point B. At point A, the speed of the satellite is vo Assume that the gravitational p ...
The Relationship Between a Star`s Brightness and its Distance
... • Take the difference in magnitudes between two stars. • Raise 2.512 to that power. • Example: How many times brighter is Polaris (a 2nd magnitude star) than a barely-visible 6th magnitude star? • 6 - 2 = 4. So 2.5124 = 39.8 times. Polaris is almost 40 times brighter than the faintest visible star! ...
... • Take the difference in magnitudes between two stars. • Raise 2.512 to that power. • Example: How many times brighter is Polaris (a 2nd magnitude star) than a barely-visible 6th magnitude star? • 6 - 2 = 4. So 2.5124 = 39.8 times. Polaris is almost 40 times brighter than the faintest visible star! ...
Stellar Magnitudes & Distances
... • Take the difference in magnitudes between two stars. • Raise 2.512 to that power. • Example: How many times brighter is Polaris (a 2nd magnitude star) than a barely-visible 6th magnitude star? • 6 - 2 = 4. So 2.5124 = 39.8 times. Polaris is almost 40 times brighter than the faintest visible star! ...
... • Take the difference in magnitudes between two stars. • Raise 2.512 to that power. • Example: How many times brighter is Polaris (a 2nd magnitude star) than a barely-visible 6th magnitude star? • 6 - 2 = 4. So 2.5124 = 39.8 times. Polaris is almost 40 times brighter than the faintest visible star! ...
Stars, Galaxies, and the Universe Section 1 Section 1
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
lecture7.html
... tells birds which way is north. The positions of stars in the northern sky during the spring are shown here. The closed circles indicate star positions during the early evening, and the open circles indicate the positions of the same stars ...
... tells birds which way is north. The positions of stars in the northern sky during the spring are shown here. The closed circles indicate star positions during the early evening, and the open circles indicate the positions of the same stars ...
chapter 2 - Test Bank 1
... This chapter focuses on the appearance of the night sky. Many of the concepts presented were common knowledge before time became quantified on clocks and city lights blocked our nightly view of the sky. Most people today no longer have an understanding of the basic appearance or motions of the sky. ...
... This chapter focuses on the appearance of the night sky. Many of the concepts presented were common knowledge before time became quantified on clocks and city lights blocked our nightly view of the sky. Most people today no longer have an understanding of the basic appearance or motions of the sky. ...
Document
... • In addition to the 4 Galilean satellites, 12 other moons of Jupiter have been discovered • Owing to Jupiter’s tidal effects all Galilean moons are ‘synchronous rotators’: they keep the same face towards Jupiter • Voyager also found a ring around Jupiter, in between two small moons before Io • Late ...
... • In addition to the 4 Galilean satellites, 12 other moons of Jupiter have been discovered • Owing to Jupiter’s tidal effects all Galilean moons are ‘synchronous rotators’: they keep the same face towards Jupiter • Voyager also found a ring around Jupiter, in between two small moons before Io • Late ...
Document
... • In addition to the 4 Galilean satellites, 12 other moons of Jupiter have been discovered • Owing to Jupiter’s tidal effects all Galilean moons are ‘synchronous rotators’: they keep the same face towards Jupiter • Voyager also found a ring around Jupiter, in between two small moons before Io • Late ...
... • In addition to the 4 Galilean satellites, 12 other moons of Jupiter have been discovered • Owing to Jupiter’s tidal effects all Galilean moons are ‘synchronous rotators’: they keep the same face towards Jupiter • Voyager also found a ring around Jupiter, in between two small moons before Io • Late ...
across
... Back in the 1850s, scientists thought the Sun's energy came from gravity- the Sun was converting gravitational energy to heat. Egrav=GMm/R. So as R get smaller, energy can be released. Lord Kelvin estimated the Sun could last 30 million years based on this. ...
... Back in the 1850s, scientists thought the Sun's energy came from gravity- the Sun was converting gravitational energy to heat. Egrav=GMm/R. So as R get smaller, energy can be released. Lord Kelvin estimated the Sun could last 30 million years based on this. ...
Here
... It is important to use appropriate units when measuring physical quantities, and to report those units when you report your results. Distances between objects in space are so great that specifying distance in miles is like giving the distance from here to St. Louis in millimeters. Scientists use lig ...
... It is important to use appropriate units when measuring physical quantities, and to report those units when you report your results. Distances between objects in space are so great that specifying distance in miles is like giving the distance from here to St. Louis in millimeters. Scientists use lig ...
HO-04 5a Astro Unit Content
... distance: the sun is much farther away from the earth than is the moon (the average distance from the earth to the sun is slightly less than 150,000,000 km); the sun-earth distance is about 400 (390) times the earth-moon distance the only member of our solar that continually emits light and heat (th ...
... distance: the sun is much farther away from the earth than is the moon (the average distance from the earth to the sun is slightly less than 150,000,000 km); the sun-earth distance is about 400 (390) times the earth-moon distance the only member of our solar that continually emits light and heat (th ...
Chapter 2 Test Review Vocabulary • axis – an imaginary line
... Why does the moon’s shape look different on different nights? As the moon revolves around Earth, different amounts of its bright side can be seen. Stars Why does the sun look larger than the other stars you can see? The sun looks larger than other stars you can see because it is so much clos ...
... Why does the moon’s shape look different on different nights? As the moon revolves around Earth, different amounts of its bright side can be seen. Stars Why does the sun look larger than the other stars you can see? The sun looks larger than other stars you can see because it is so much clos ...
TOP 78 ASTRONOMY FACTS 1. The solar system consists of the
... temperature it is today. The universe is still expanding and we know this because galaxies are getting farther away from each other. 71. Centripetal force is a force of pull that pulls an object toward the center of a circle. In astronomy, we refer to Earth’s centripetal force as gravity. 72. Centri ...
... temperature it is today. The universe is still expanding and we know this because galaxies are getting farther away from each other. 71. Centripetal force is a force of pull that pulls an object toward the center of a circle. In astronomy, we refer to Earth’s centripetal force as gravity. 72. Centri ...
24. Life Beyond Earth: Prospects for Microbes, Civilizations, and
... What have we learned? • What is the Drake equation and how is it useful? • The Drake equation says that the number of civilizations in the Milky Way Galaxy is NHP x flife x fciv x fnow, where NHP is number of habitable planets in the galaxy, flife is the fraction of these habitable planets actually ...
... What have we learned? • What is the Drake equation and how is it useful? • The Drake equation says that the number of civilizations in the Milky Way Galaxy is NHP x flife x fciv x fnow, where NHP is number of habitable planets in the galaxy, flife is the fraction of these habitable planets actually ...
intergalactic move
... any other galaxies you usually need a telescope. However, one of our neighbour galaxies is so big that you can see it using only binoculars! Our giant next-door neighbour is called the Andromeda Galaxy. It was named after a Greek princess (read more about her on the following pages!). The Andromeda ...
... any other galaxies you usually need a telescope. However, one of our neighbour galaxies is so big that you can see it using only binoculars! Our giant next-door neighbour is called the Andromeda Galaxy. It was named after a Greek princess (read more about her on the following pages!). The Andromeda ...
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.