Instrumentation for Cosmology
... Just strings of stars? No, because they would be tightly wound up. Suppose the age of the galaxy is 10 billion years. Its inner regions rotate once in 200 million years… Therefore, we’d expect about 50 turns. The galaxy would look like a clock spring. ...
... Just strings of stars? No, because they would be tightly wound up. Suppose the age of the galaxy is 10 billion years. Its inner regions rotate once in 200 million years… Therefore, we’d expect about 50 turns. The galaxy would look like a clock spring. ...
Astronomy
... would be somewhat oval and yet flat, and would be about 20 feet in diameter. • The sand would be about 12 inches thick in the center, and thinner towards the edges. ...
... would be somewhat oval and yet flat, and would be about 20 feet in diameter. • The sand would be about 12 inches thick in the center, and thinner towards the edges. ...
The Milky Way
... It's a hundred thousand light years side to side. It bulges in the middle, sixteen thousand light years thick, But out by us, it's just three thousand light years wide. We're thirty thousand light years from galactic central point. We go 'round every two hundred million years, And our galaxy is only ...
... It's a hundred thousand light years side to side. It bulges in the middle, sixteen thousand light years thick, But out by us, it's just three thousand light years wide. We're thirty thousand light years from galactic central point. We go 'round every two hundred million years, And our galaxy is only ...
Light Years - Spring Creek Elementary
... The entire Milky Way galaxy is about 80,000 to 100,000 light years in diameter and about 250,000 to 300,000 light years in circumference. The Milky Way consists of 200 to 400 billion stars. The Milky Way is one of billions of galaxies in the known universe. One of the closest galaxies to our own is ...
... The entire Milky Way galaxy is about 80,000 to 100,000 light years in diameter and about 250,000 to 300,000 light years in circumference. The Milky Way consists of 200 to 400 billion stars. The Milky Way is one of billions of galaxies in the known universe. One of the closest galaxies to our own is ...
The Danger of Deadly Cosmic Explosions
... • Brightest X-Ray burst – damaged satellites – affected radio. ...
... • Brightest X-Ray burst – damaged satellites – affected radio. ...
Astronomy 110 Quiz #22 Given: 04/10/2007 Name: (Answer Key
... Directions: Consider the following 4 statements about the structure of our galaxy and about how astronomers discovered that structure: #1: Our Sun resides in the halo portion of our galaxy. #2: Based on star counts, William Herchel concluded that the Sun is near the center of our galaxy. However, he ...
... Directions: Consider the following 4 statements about the structure of our galaxy and about how astronomers discovered that structure: #1: Our Sun resides in the halo portion of our galaxy. #2: Based on star counts, William Herchel concluded that the Sun is near the center of our galaxy. However, he ...
THE MILKY WAY GALAXY
... stars, gas and dust, about 100,000 light years in diameter. The density of stars increases towards the center of the Galaxy. The Milky Way appears as a band of light because stars are concentrated within the flattened disk. Since the solar system is also located within the disk, from our perspective ...
... stars, gas and dust, about 100,000 light years in diameter. The density of stars increases towards the center of the Galaxy. The Milky Way appears as a band of light because stars are concentrated within the flattened disk. Since the solar system is also located within the disk, from our perspective ...
HW 5 Solutions What are “black smokers?” Where in our solar
... Figure 11.10: NGC 4414 is a spiral galaxy, with no bar, and numerous arms. Sc Figure 11.11: NGC 1300 is a spiral galaxy, barred, and with two distinct arms. SBb Figure 11.12: M87 is an elliptical galaxy that is almost entirely spherical. E0. 4. How did Edwin Hubble use Cepheid variables to determine ...
... Figure 11.10: NGC 4414 is a spiral galaxy, with no bar, and numerous arms. Sc Figure 11.11: NGC 1300 is a spiral galaxy, barred, and with two distinct arms. SBb Figure 11.12: M87 is an elliptical galaxy that is almost entirely spherical. E0. 4. How did Edwin Hubble use Cepheid variables to determine ...
Astronomy – The Milky Way Galaxy
... Astronomy – The Milky Way Galaxy The ______________ _________ Galaxy ...
... Astronomy – The Milky Way Galaxy The ______________ _________ Galaxy ...
Astronomy I Ex.2
... c) 100,000 AU. 2. H0 ' 70 secKm M pc What is the (approximate) age of the universe in Gyr? 3. Convert the following distances in cm to distances in AU: a) Approximate distance from the earth to the sun: 1.44 × 1013 cm b) Approximate distance from the earth to the next nearest star - Alpha Centauri: ...
... c) 100,000 AU. 2. H0 ' 70 secKm M pc What is the (approximate) age of the universe in Gyr? 3. Convert the following distances in cm to distances in AU: a) Approximate distance from the earth to the sun: 1.44 × 1013 cm b) Approximate distance from the earth to the next nearest star - Alpha Centauri: ...
Stars and Galaxies
... Our sun is a star. There are countless more like it in space. The sun is one of billions of stars that make up the Milky Way. The Milky Way is a Galaxy. A galaxy is a cluster of stars held together by the force of gravity. The stars in a galaxy are very far apart. Scientists believe there may be as ...
... Our sun is a star. There are countless more like it in space. The sun is one of billions of stars that make up the Milky Way. The Milky Way is a Galaxy. A galaxy is a cluster of stars held together by the force of gravity. The stars in a galaxy are very far apart. Scientists believe there may be as ...
Our Galactic Archipelago
... Lalande (another French astronomer) said of him that, during Lacaille’s short life, he had made more observations and calculations than all the astronomers of his time put together. ...
... Lalande (another French astronomer) said of him that, during Lacaille’s short life, he had made more observations and calculations than all the astronomers of his time put together. ...
The Milky Way - Zumbroclassroom
... a ______ of _______. _________ was the first person to suggest that the Milky Way is actually made up of millions of distant stars. It was proven _______ years later when _________ observed this band of stars through his telescope. The Milky Way, like all other galaxies, is a complex system of _____ ...
... a ______ of _______. _________ was the first person to suggest that the Milky Way is actually made up of millions of distant stars. It was proven _______ years later when _________ observed this band of stars through his telescope. The Milky Way, like all other galaxies, is a complex system of _____ ...
ISP 205: Visions of the Universe
... • We see objects as they were in the past: • Light travels at a finite speed (300,000 km/s). • The farther away we look in distance, the further back we look in time. • Allows us to study the history of the Universe. ...
... • We see objects as they were in the past: • Light travels at a finite speed (300,000 km/s). • The farther away we look in distance, the further back we look in time. • Allows us to study the history of the Universe. ...
The Milky Way Galaxy
... Decorate the galaxy with colours and glitter. Milky Way Facts • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, ga ...
... Decorate the galaxy with colours and glitter. Milky Way Facts • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, ga ...
Black Hole
... •There are many galaxies in the universe, and our Another galaxy , The galaxy, the Milky Way Canis Major Dwarf, was found by German galaxy, has many solar Astronomers on November systems and planets in it. 10, 2010. This is currently the closest galaxy to our ...
... •There are many galaxies in the universe, and our Another galaxy , The galaxy, the Milky Way Canis Major Dwarf, was found by German galaxy, has many solar Astronomers on November systems and planets in it. 10, 2010. This is currently the closest galaxy to our ...
Andromeda Galaxy
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The Andromeda Galaxy (/ænˈdrɒmɨdə/), also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth. It is the nearest major galaxy to the Milky Way and was often referred to as the Great Andromeda Nebula in older texts. It received its name from the area of the sky in which it appears, the constellation of Andromeda, which was named after the mythological princess Andromeda. Being approximately 220,000 light years across, it is the largest galaxy of the Local Group, which also contains the Milky Way, the Triangulum Galaxy, and about 44 other smaller galaxies.The Andromeda Galaxy is the most massive galaxy in the Local Group as well. Despite earlier findings that suggested that the Milky Way contains more dark matter and could be the most massive in the grouping, the 2006 observations by the Spitzer Space Telescope revealed that Andromeda contains one trillion (1012) stars: at least twice the number of stars in the Milky Way, which is estimated to be 200–400 billion.The Andromeda Galaxy is estimated to be 1.5×1012 solar masses, while the mass of the Milky Way is estimated to be 8.5×1011 solar masses. In comparison, a 2009 study estimated that the Milky Way and M31 are about equal in mass, while a 2006 study put the mass of the Milky Way at ~80% of the mass of the Andromeda Galaxy. The Milky Way and Andromeda are expected to collide in 3.75 billion years, eventually merging to form a giant elliptical galaxy or perhaps a large disk galaxy.At 3.4, the apparent magnitude of the Andromeda Galaxy is one of the brightest of any of the Messier objects, making it visible to the naked eye on moonless nights even when viewed from areas with moderate light pollution. Although it appears more than six times as wide as the full Moon when photographed through a larger telescope, only the brighter central region is visible to the naked eye or when viewed using binoculars or a small telescope and would it hence appear to be but another star.