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science - Amazon Web Services
science - Amazon Web Services

... Man has always been fascinated by the universe. Astronomy is the science that studies the composition, motions, positions, dimensions, and destinies of the planets, stars, and other heavenly bodies in our universe. Man has known or conjectured about our solar system for many years through mathematic ...
Astronomy (C) - North Carolina Science Olympiad
Astronomy (C) - North Carolina Science Olympiad

... • Medium mass stars: burn H, become red giant, separate into planetary nebula & white dwarf • Massive stars: burn H all the way to Fe, explode in supernova, leave behind remnant and either neutron star or black hole ...
Testing Your Sky
Testing Your Sky

... During the winter months the air is cold and it cannot hold much water vapor. This is the reason that on especially cold winter days the sky is a dark, deep blue. During the summer months when the air is loaded with moisture the sky scatters light all about and the sky takes on a white, milky appear ...
Oct 06, 2001
Oct 06, 2001

... C) It is a shell of gas ejected from a star late in its life. D) It is what is left when a white dwarf star explodes as a supernova. 8) What makes a high-mass star's core collapse? A) Energy from its outer layers compresses its core. B) The only thing that can make a star's core collapse is a collis ...
Star Constellations
Star Constellations

chapter15SurveyStars..
chapter15SurveyStars..

Magnitudes - Astronomy @ Walton High School
Magnitudes - Astronomy @ Walton High School

... would appear from a certain point in space. By doing this we understand each star's true magnitude.  The true absolute magnitude for the Sun is 4.2 whereas to us on Earth it is -27.  It is the brightness of a star at a distance of 10 parsecs which is 32.6 light years. ...
Groups of Stars
Groups of Stars

... A spiral galaxy in the constellation Coma Berenices A barred-spiral galaxy in the Fornax cluster ...
Stars - Mike Brotherton
Stars - Mike Brotherton

... Same phenomenon makes the day sky appear blue (if it’s not cloudy). ...
Lecture102802 - FSU High Energy Physics
Lecture102802 - FSU High Energy Physics

... After explosion, hydrogen can still be added to white dwarf from red giant Process can repeat itself ...
Nature of Stars 2
Nature of Stars 2

Distance Ladder
Distance Ladder

Supernovae Gamma-Ray Bursts and and some of their uses
Supernovae Gamma-Ray Bursts and and some of their uses

... the Milky Way and more than a hundred are being discovered every year in distant galaxies ...
Lives of Stars - Amazon Web Services
Lives of Stars - Amazon Web Services

... sun-may become black holes when they die. A blackhole is an object with gravity so strong that nothing, not even light, can escape. After a very massive star dies in a supernova explosion, more than five times the mass of the sun may be left. The gravity of this mass is so strong that the gas is pul ...
Astronomy 122 mid Term Exam
Astronomy 122 mid Term Exam

... Here is an example that got ½ credit – again even though it’s not even close to correct: “You determine the age by looking at the stars around it. Since they are in a stellar cluster they are the same age. The age of the star is 2 times the age of the Sun.” Or “The most massive star still on the mai ...
Stellar Evolution – Life of a Star
Stellar Evolution – Life of a Star

... Stellar evolution is very important. It is responsible for the production of most of the elements (all natural elements after H and He). As well, it aids in the formation of galaxies, new stars and planetary systems. ...
Answer
Answer

... Luminosity remains constant at about 1 Lsun until about 10,000 Myr when it suddenly (and briefly) increases to over 4500 Lsun. 2. Describe how the radius of this star changes with time. Radius remains constant at about 1 Rsun until about 10,000 Myr when it suddenly (and briefly) increases to over 20 ...
Spring Constellations
Spring Constellations

... centaur’s front hooves, Rigil Kentaurus and Hadar, also called ά- and β-Centauri. Our closest neighbor, Proxima Centauri, a red dwarf star 4 LY away, is due south of alpha Centauri. It’s so faint that it can’t be seen with the naked eye. It’s only about 5 times larger than the earth. ...
Observations of V838 Mon light echo
Observations of V838 Mon light echo

... In classical novae, hydrogen explosion happens in a layer on a white dwarf surface. A small amount of matter located above being ejected into space has a mass of 1/1000 or 1/10000 solar masses. When the ejected gas expands, its density decreases rapidly, it passes into the optically thin state and g ...
Evolution of our Sun
Evolution of our Sun

D1 Stellar quantities (PPT)
D1 Stellar quantities (PPT)

... Some galaxies exist in isolation but the majority of them come in clusters containing from a few dozen to a few thousand members. The Milky Way is part of a cluster of about 30 galaxies called the “Local Group” which includes Andromeda and Triangulum. Regular clusters consist of a concentrated core ...
Circumpolar constellations
Circumpolar constellations

Type Ia supernovae and the ESSENCE supernova survey
Type Ia supernovae and the ESSENCE supernova survey

... The astronomical magnitude system was originated by Hipparchus in the 2nd century BC. The brightest stars in the sky are said to be “of the first magnitude”. The faintest stars visible to the unaided eye are 6th magnitude. For two stars of intensity I1 and I2 their apparent magnitudes are related a ...
Galactic Star Formation Science with Integral Field
Galactic Star Formation Science with Integral Field

... – Bow-shock apex shows extremely high temperature T~6000K - revealing that the H2 molecule persists in these very high temperature regions Giannini et al. “Near-infrared, IFU spectroscopy unravels the bow-shock HH99B“ 2008, A&A v.481, 123 ...
LIFE CYCLE OF STARS
LIFE CYCLE OF STARS

< 1 ... 37 38 39 40 41 42 43 44 45 ... 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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