Characteristics of stars
... • Many stars are about the size of the sun, which is a medium sized star. • White dwarfs are about the size of Earth. • Neutron stars are about 20KM (smallest) • Giant stars and super giant stars. If our sun were a super giant star it would fill our solar system as far out as Jupiter. ...
... • Many stars are about the size of the sun, which is a medium sized star. • White dwarfs are about the size of Earth. • Neutron stars are about 20KM (smallest) • Giant stars and super giant stars. If our sun were a super giant star it would fill our solar system as far out as Jupiter. ...
Size Color and Temperature
... Betelgeuse (BEET-uhl-JOOZ) is more than 600 times greater in diameter than the Sun. If Betelgeuse replaced the Sun, it would fill space in our solar system well beyond Earth’s orbit. Because giant and supergiant stars have such huge surface areas to give off light, they are very bright. Betelgeuse i ...
... Betelgeuse (BEET-uhl-JOOZ) is more than 600 times greater in diameter than the Sun. If Betelgeuse replaced the Sun, it would fill space in our solar system well beyond Earth’s orbit. Because giant and supergiant stars have such huge surface areas to give off light, they are very bright. Betelgeuse i ...
Astronomy Galaxies & The Universe
... most stars are made of hydrogen & helium (determined by temperature & composition no two are alike) ...
... most stars are made of hydrogen & helium (determined by temperature & composition no two are alike) ...
A-105 Homework 1
... 13. (2 pts.) In the TV show Star Trek, the fastest the Enterprise can travel is warp 9 (1516 times the speed of light). How long would it take to travel from one end of the galaxy to the other moving at warp 9? What about from our solar system to the Galactic center? (Express your answers in the mos ...
... 13. (2 pts.) In the TV show Star Trek, the fastest the Enterprise can travel is warp 9 (1516 times the speed of light). How long would it take to travel from one end of the galaxy to the other moving at warp 9? What about from our solar system to the Galactic center? (Express your answers in the mos ...
Main-sequence stars - Stellar Populations
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
The Life Cycle of Stars
... exhausted its ability to fuse other elements like carbon and oxygen, it will become a red giant and expand in size to envelope the Earth. And surprisingly, the larger the mass of the star, the quicker it burns its fuel sources and the shorter its lifespan. Also see and read about Hubble Space Telesc ...
... exhausted its ability to fuse other elements like carbon and oxygen, it will become a red giant and expand in size to envelope the Earth. And surprisingly, the larger the mass of the star, the quicker it burns its fuel sources and the shorter its lifespan. Also see and read about Hubble Space Telesc ...
Supernovae, Neutron Stars, Black Holes
... as plutonium-244, 244Pu, (81 million years). The short-lived isotopes are particularly interesting. If they formed in an exploding star, that explosion might have triggered the collapse of the huge interstellar cloud in which the Sun formed. ...
... as plutonium-244, 244Pu, (81 million years). The short-lived isotopes are particularly interesting. If they formed in an exploding star, that explosion might have triggered the collapse of the huge interstellar cloud in which the Sun formed. ...
The “Big Bang” Theory
... and is part of all life as we know it. • It may have been lightning that made these compounds become “alive”. • Water was necessary for life to evolve and this may have come from comets • Oxygen in the atmosphere was given off by early organisms that were very abundant ...
... and is part of all life as we know it. • It may have been lightning that made these compounds become “alive”. • Water was necessary for life to evolve and this may have come from comets • Oxygen in the atmosphere was given off by early organisms that were very abundant ...
the Study Guide
... Comets: Scientists call comets “dirty snowballs” because they are made of ice and rocks.” The orbit of a comet brings it close to the sun, where it forms a tail, and then sends it far out beyond Pluto. G's: A force expressed in terms of Earth's gravity. This force is increased by high-speed travel, ...
... Comets: Scientists call comets “dirty snowballs” because they are made of ice and rocks.” The orbit of a comet brings it close to the sun, where it forms a tail, and then sends it far out beyond Pluto. G's: A force expressed in terms of Earth's gravity. This force is increased by high-speed travel, ...
The Hertzsprung – Russell Diagram
... 4. List the four categories of information you can determine about a star by using the H-R Diagram? 5. If you know a star’s color, what other information can you determine? 6. What is the relationship between the X and Y values for main sequence stars? 7. 90% of stars belong to which category? 8. Wh ...
... 4. List the four categories of information you can determine about a star by using the H-R Diagram? 5. If you know a star’s color, what other information can you determine? 6. What is the relationship between the X and Y values for main sequence stars? 7. 90% of stars belong to which category? 8. Wh ...
20.1 Notes
... own gravity and rebounds with a shock wave that violently blows the stars outer layers from the core. This huge, bright explosion is called a Type II _________________________. If the core that remains after a supernova has a mass of 1.4 – 3 solar masses it becomes a _______________ star, a very den ...
... own gravity and rebounds with a shock wave that violently blows the stars outer layers from the core. This huge, bright explosion is called a Type II _________________________. If the core that remains after a supernova has a mass of 1.4 – 3 solar masses it becomes a _______________ star, a very den ...
stars and galaxies – study guide
... 25. An example of a winter constellation is Orion. 26. White dwarf stars are hot, faint, Earth-sized stars. 27. A black hole is the densest object in the universe, and no light escapes. 28. The absolute magnitude is a measurement that compares the true brightness of stars. 29. What kind of spectrum ...
... 25. An example of a winter constellation is Orion. 26. White dwarf stars are hot, faint, Earth-sized stars. 27. A black hole is the densest object in the universe, and no light escapes. 28. The absolute magnitude is a measurement that compares the true brightness of stars. 29. What kind of spectrum ...
Five Women at the Crossroads of Astronomy - Physics
... It seems to me that our forefathers and foremothers were perhaps luckier than we are because they lived outside enough to be much more familiar with the sky than are most people today. And I think that if somehow we could get the public to go on a very dark night out into the country and to look at ...
... It seems to me that our forefathers and foremothers were perhaps luckier than we are because they lived outside enough to be much more familiar with the sky than are most people today. And I think that if somehow we could get the public to go on a very dark night out into the country and to look at ...
Stars and Galaxies - Earth Science: Astronomy
... D. Universe is expanding 1. Doppler shift—light changes as it moves toward or away from an object a. Starlight moving toward Earth shifts to blue-violet end of spectrum b. Starlight moving away from Earth shifts to red end of spectrum ...
... D. Universe is expanding 1. Doppler shift—light changes as it moves toward or away from an object a. Starlight moving toward Earth shifts to blue-violet end of spectrum b. Starlight moving away from Earth shifts to red end of spectrum ...
White Dwarf Stars
... • Stellar mass black holes are detected via their X-ray radiation. • A black hole accelerates its surrounding material (often gas from a binary companion) to very high speeds in an accretion disk. ...
... • Stellar mass black holes are detected via their X-ray radiation. • A black hole accelerates its surrounding material (often gas from a binary companion) to very high speeds in an accretion disk. ...
Life Cycle of Stars
... •When atomic nuclei form a nucleus •Hydrogen fuses into helium •All stars (low and high mass) go through this •How long a star lives depends on its mass •Small stars use their fuel slow = longer lives ...
... •When atomic nuclei form a nucleus •Hydrogen fuses into helium •All stars (low and high mass) go through this •How long a star lives depends on its mass •Small stars use their fuel slow = longer lives ...
The Temperatures of Stars
... The Harvard Computers At the same time, the Observatory received funding from a wealthy donor to complete a large survey of stellar spectral types: the Henry Draper Survey. The work of collecting measurements, cataloging the results, and analyzing them fell to the female computers. Since they could ...
... The Harvard Computers At the same time, the Observatory received funding from a wealthy donor to complete a large survey of stellar spectral types: the Henry Draper Survey. The work of collecting measurements, cataloging the results, and analyzing them fell to the female computers. Since they could ...
Ch 29 Sun and Solar Activity
... caused by motion of observer – Hold pencil out and alternate closing each eye – As E moves from one side of its orbit to opp. Side, a nearby star appears to shift • The closer the star, the larger the shift --the dist. to a star can be estimated from its parallax shift measuring angle of ...
... caused by motion of observer – Hold pencil out and alternate closing each eye – As E moves from one side of its orbit to opp. Side, a nearby star appears to shift • The closer the star, the larger the shift --the dist. to a star can be estimated from its parallax shift measuring angle of ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.