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Lecture Note
Lecture Note

Unit 49-59 Review
Unit 49-59 Review

... 22. If the surface temperature of a star is doubled, but its radius remains the same, its new luminosity is _____________ its old luminosity. a. 16 times smaller b. 4 times smaller c. the same as d. 4 times larger than e. 16 times larger than 23. The Stefan-Boltzmann Law applies to a. Individual ato ...
Spectra of stars
Spectra of stars

Constellation Notes
Constellation Notes

... woman, or an inanimate object such as a microscope, a compass, or a crown. How many constellations are there? The sky was divided up into 88 different constellations in 1922. This included 48 ancient constellations listed by the Greek astronomer Ptolemy as well as 40 new constellations. Star Maps Th ...
The Life Cycle of Stars
The Life Cycle of Stars

... Task #3: Go to The Life and Death of Stars. Read the short section on "Where are stars born" and see pictures of the protostars of M16: The Eagle Nebula and other nebulae (stars in formation) on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to oth ...
STARS AND CONSTELLATIONS
STARS AND CONSTELLATIONS

... - Used to find North Star. The North Star is about six times the distance between bowl stars (pointer stars) - Two galaxies and one planetary nebula are found in the Big Dipper. The planetary nebula is the Owl Nebula, (a star explodes shedding it’s outer layer of gases). - In Greek mythology the Big ...
Lifetimes of stars
Lifetimes of stars

Solutions 5
Solutions 5

... hydrogen at a much higher rate, thus, the star spend less time on the main sequence. Greater mass means that higher mass elements, such as carbon, can be burned. Finally, when the nuclear fuels are exhausted the gravitational end is more spectacular. ...
Astronomy
Astronomy

Summary: Stellar Distances
Summary: Stellar Distances

... (“The Solar Constant”) d = 150,000,000 km (“The Astronomical Unit) ...
File
File

Spring Stargazing - Trimble County Schools
Spring Stargazing - Trimble County Schools

... • If you really want to challenge yourself, use binoculars and go straight out from the nose of the lion. You should run into the “Beehive Cluster”. ...
Arcturus and Pollux
Arcturus and Pollux

Stars
Stars

... • A star is a ball of plasma held together by its own gravity – Nuclear reactions occur in stars - ...
The Hertzsprung-Russell Diagram
The Hertzsprung-Russell Diagram

White Dwarf star. Are
White Dwarf star. Are

... So a star has a life similar to a battery that cannot be recharged. When the battery runs out of energy, it is finished. Our sun will run out of energy and it will be finished too. ...
User`s Guide to the Sky Notes
User`s Guide to the Sky Notes

... As you observe the night sky, your view is limited to a few thousand stars that are close enough, big enough, and bright enough for us to see from our vantage point in the galaxy. Some things you think are stars are actually distant galaxies that are so far away, the light from its billions of stars ...
d 2
d 2

... – If a star is actually closer than 10pc, its absolute magnitude will be a bigger number, i.e. it is intrinsically dimmer than it appears – If a star is farther than 10pc, its absolute magnitude will be a smaller number, i.e. it is intrinsically brighter than it appears ...
Life Cycle of Star EDpuzzle worksheet
Life Cycle of Star EDpuzzle worksheet

Stars and Galaxies – Notes
Stars and Galaxies – Notes

... Many stars are found in multiple-star systems. Alpha Centauri is in a multiple star system. It is made up of three stars called a triple star system. Over half of the stars in the sky have at least one companion star. Most of these stars are doublestar systems in which two stars revolve around each ...
The Sun . . .
The Sun . . .

... where it expands and grows cooler and more luminous. Its final stage is white dwarf, after it collapses upon itself and only the hot, dense core will remain. ...
Document
Document

... j. How is it possible that Canopus is more luminous than Achernar, given their respective spectral types? Canopus is cooler than Achernar; therefore, the only way Canopus can be more luminous is because it is LARGER. 2. List the evolutionary stages of the Sun’s life cycle & describe how its size (Ra ...
Light as a Wave (1) Distances to Stars
Light as a Wave (1) Distances to Stars

Mars Project
Mars Project

Life Cycle of Stars
Life Cycle of Stars

< 1 ... 107 108 109 110 111 112 113 114 115 ... 132 >

Corona Borealis

Corona Borealis /kɵˈroʊnə bɒriˈælɨs/ is a small constellation in the Northern Celestial Hemisphere. It is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Its brightest stars form a semicircular arc. Its Latin name, inspired by its shape, means ""northern crown"". In classical mythology Corona Borealis generally represented the crown given by the god Dionysus to the Cretan princess Ariadne and set by him in the heavens. Other cultures likened the pattern to a circle of elders, an eagle's nest, a bear's den, or even a smokehole. Ptolemy also listed a southern counterpart, Corona Australis, with a similar pattern. The brightest star is the magnitude 2.2 Alpha Coronae Borealis. The yellow supergiant R Coronae Borealis is the prototype of a rare class of giant stars—the R Coronae Borealis variables—that are extremely hydrogen deficient, and thought to result from the merger of two white dwarfs. T Coronae Borealis, also known as the Blaze Star, is another unusual type of variable star known as a recurrent nova. Normally of magnitude 10, it last flared up to magnitude 2 in 1946. ADS 9731 and Sigma Coronae Borealis are multiple star systems with six and five components respectively. Five star systems have been found to have Jupiter-sized exoplanets. Abell 2065 is a highly concentrated galaxy cluster one billion light-years from our Solar System containing more than 400 members, and is itself part of the larger Corona Borealis Supercluster.
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