Stars in our Galaxy
... • Most stars on the H-R diagram fit into a diagonal band. This band is called the main sequence. It contains hot, blue, bright stars in the upper left and cool, red, dim stars in the lower right. • 90% of all stars are main sequence stars but there are a few that don’t fall into this “line” what ar ...
... • Most stars on the H-R diagram fit into a diagonal band. This band is called the main sequence. It contains hot, blue, bright stars in the upper left and cool, red, dim stars in the lower right. • 90% of all stars are main sequence stars but there are a few that don’t fall into this “line” what ar ...
Hubble`s Law is the relation between the recession velocity of a
... may explain why stars form there. The fact that we see star formation in spiral arms is evidence for the density wave theory, not the other way around. Similarly, the fact that we see star formation implies that elliptical galaxies were once more efficient then spirals, not the other way around. Als ...
... may explain why stars form there. The fact that we see star formation in spiral arms is evidence for the density wave theory, not the other way around. Similarly, the fact that we see star formation implies that elliptical galaxies were once more efficient then spirals, not the other way around. Als ...
Name _________ Date _____________ Period ______ Skills
... d. their size. _____ 18. Stars are now classified by a. their elements. b. their temperature. c. their age. d. their size. _____ 19. Class O stars, the hottest stars, are a. yellow. b. orange. c. red. d. blue. 20. Early astronomers called the brightest stars in the sky ______________________ stars. ...
... d. their size. _____ 18. Stars are now classified by a. their elements. b. their temperature. c. their age. d. their size. _____ 19. Class O stars, the hottest stars, are a. yellow. b. orange. c. red. d. blue. 20. Early astronomers called the brightest stars in the sky ______________________ stars. ...
The Marathon
... As soon as it is possible to see the guide stars for the first objects, begin looking for the first objects. As darkness begins to prevail over twilight, the first objects must be hunted quickly. Do not linger over them, as they will be difficult to find and see at best. The first hour of observing ...
... As soon as it is possible to see the guide stars for the first objects, begin looking for the first objects. As darkness begins to prevail over twilight, the first objects must be hunted quickly. Do not linger over them, as they will be difficult to find and see at best. The first hour of observing ...
Constellations - Brown University Wiki
... seven sisters, a cluster of six bright stars ( about 200 in a telescope) known all over the world but now counted as part of the larger group called the constellation Taurus (the Bull) and the asterism “the Big Dipper”, the seven brightest stars in the larger group called Ursa Major (the Big Bear). ...
... seven sisters, a cluster of six bright stars ( about 200 in a telescope) known all over the world but now counted as part of the larger group called the constellation Taurus (the Bull) and the asterism “the Big Dipper”, the seven brightest stars in the larger group called Ursa Major (the Big Bear). ...
Chapter 40
... • Largest stars have no force strong enough to stop them from contracting • Collapse until they disappear from observable universe…a black hole • Speed of collapse increases until it is faster than the speed of light, therefore we can’t see ...
... • Largest stars have no force strong enough to stop them from contracting • Collapse until they disappear from observable universe…a black hole • Speed of collapse increases until it is faster than the speed of light, therefore we can’t see ...
How many planets are there in our solar system
... 14. Who first discovered and classified galaxies? (1 pt) a. Neil Armstrong b. Edwin Hubble c. Frank Shu d. Robert Hevener 15. List evidence supporting the Big Bang Theory.(2 pts) 16.What is a meteorite? (1 pt) 17.What is space junk and how did it get into space? (1 pts) 18. Who is Dr. Frank Shu? (1 ...
... 14. Who first discovered and classified galaxies? (1 pt) a. Neil Armstrong b. Edwin Hubble c. Frank Shu d. Robert Hevener 15. List evidence supporting the Big Bang Theory.(2 pts) 16.What is a meteorite? (1 pt) 17.What is space junk and how did it get into space? (1 pts) 18. Who is Dr. Frank Shu? (1 ...
Celestial Bodies (Mike Stroppa) - Powerpoint
... something small • The Big Bang occurred around 15-20 billion years ago • Formation of stars and galaxies shortly after ...
... something small • The Big Bang occurred around 15-20 billion years ago • Formation of stars and galaxies shortly after ...
What is a Scientist? - Cockeysville Middle School
... STARS Stars are giant spheres of glowing gases. A star is powered by nuclear fusion. This is a process whereby hydrogen atoms are fused together to create helium atoms. In the process a tremendous amount of energy is given off in the form of electromagnetic waves and heat. There are billions of sta ...
... STARS Stars are giant spheres of glowing gases. A star is powered by nuclear fusion. This is a process whereby hydrogen atoms are fused together to create helium atoms. In the process a tremendous amount of energy is given off in the form of electromagnetic waves and heat. There are billions of sta ...
The most important questions to study for the exam
... 6. A star appears to move back and forth with a period of exactly 1 year with respect to a distant galaxy that appears close to it in our sky. What is the most likely cause of this observed motion? • The observed motion is simply the motion of the star around the center of the galaxy. ...
... 6. A star appears to move back and forth with a period of exactly 1 year with respect to a distant galaxy that appears close to it in our sky. What is the most likely cause of this observed motion? • The observed motion is simply the motion of the star around the center of the galaxy. ...
Chapter 29
... As energy moves towards an observer the waves compress (gets shorter) and shifts to the color blue. As energy moves away from an observer, the waves elongate and shift to the longer color red. ...
... As energy moves towards an observer the waves compress (gets shorter) and shifts to the color blue. As energy moves away from an observer, the waves elongate and shift to the longer color red. ...
stars_2nd_edit
... Red Dwarf stars can range in size from a hundred times smaller than the sun, to only a couple of times smaller. Because of their small size these stars burn their fuel very slowly, which allows them to live a very long time. Some red dwarf stars will live trillions of years before they run out of fu ...
... Red Dwarf stars can range in size from a hundred times smaller than the sun, to only a couple of times smaller. Because of their small size these stars burn their fuel very slowly, which allows them to live a very long time. Some red dwarf stars will live trillions of years before they run out of fu ...
Earth Science Unit Test Review
... Key Questions: 1. Describe composition of Sun. What type of star is it? How long does it take light from Sun to reach us? 2. Identify the features of the Sun on a diagram. Why do sunspots a ...
... Key Questions: 1. Describe composition of Sun. What type of star is it? How long does it take light from Sun to reach us? 2. Identify the features of the Sun on a diagram. Why do sunspots a ...
ref H-R Spectral types
... This is Sirius (“scorching”), the Dog Star, one of the brightest stars in the sky. It is the jewel on the collar of Canis Major (the larger of Orion’s ...
... This is Sirius (“scorching”), the Dog Star, one of the brightest stars in the sky. It is the jewel on the collar of Canis Major (the larger of Orion’s ...
Student 4
... Red Dwarfs and Barnard’s star. Their origin and significance to astronomy. What is a Red Dwarf? A red dwarf is a small and relatively cool star on the main sequence, being a M spectral type. Red dwarfs range in mass from a low of 0.075 solar masses (M☉) to about 0.50 M☉ and have a surface temperatur ...
... Red Dwarfs and Barnard’s star. Their origin and significance to astronomy. What is a Red Dwarf? A red dwarf is a small and relatively cool star on the main sequence, being a M spectral type. Red dwarfs range in mass from a low of 0.075 solar masses (M☉) to about 0.50 M☉ and have a surface temperatur ...
of the star. - Colyton High School
... 3. Fusion stops, temperature drops and gas pressure decreases, no longer in equilibrium. 4. Core contracts (gravity WINS by pulling atoms in). 5. Increased temperature (more atoms, more collisions) and gas pressure in the core reinitiates nuclear fusion, equilibrium is achieved, and the cycle begins ...
... 3. Fusion stops, temperature drops and gas pressure decreases, no longer in equilibrium. 4. Core contracts (gravity WINS by pulling atoms in). 5. Increased temperature (more atoms, more collisions) and gas pressure in the core reinitiates nuclear fusion, equilibrium is achieved, and the cycle begins ...
PREVIEW-Reading Quiz 06 - Chapter 12
... Because the surface temperatures of these stars are so low, dust forms along with the gas and gets ejected. The vast majority of these giant stars are part of a binary system and mass ends up being dumped on the other star. These giant stars have convection occurring throughout their interior, and t ...
... Because the surface temperatures of these stars are so low, dust forms along with the gas and gets ejected. The vast majority of these giant stars are part of a binary system and mass ends up being dumped on the other star. These giant stars have convection occurring throughout their interior, and t ...
Day 1212
... Giants and Dwarfs Type I supernovas form from hydrogen-poor, low mass stars. Carbon detonation causes carbon fusion almost everywhere inside the star and is thought to destroy the star completely. Type II supernovas form from hydrogen-rich, high mass stars. They leave behind a collapsed core that c ...
... Giants and Dwarfs Type I supernovas form from hydrogen-poor, low mass stars. Carbon detonation causes carbon fusion almost everywhere inside the star and is thought to destroy the star completely. Type II supernovas form from hydrogen-rich, high mass stars. They leave behind a collapsed core that c ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.