Black Hole Sun: A Total Eclipse Free Public Lecture about Eclipses
... We are interpreting E. C. Pickering’s (A. J. Cannon’s boss) spectra of Mizar (a star in the Big Dipper) in 1889. How can the spectral line of hydrogen appear at different wavelengths? A. The star is moving. B. Hydrogen emits at different wavelengths at different times. C. There was something wrong w ...
... We are interpreting E. C. Pickering’s (A. J. Cannon’s boss) spectra of Mizar (a star in the Big Dipper) in 1889. How can the spectral line of hydrogen appear at different wavelengths? A. The star is moving. B. Hydrogen emits at different wavelengths at different times. C. There was something wrong w ...
October 2014 - Newbury Astronomical Society
... a letter in sequence from ‘A’ through the alphabet. The original sequence was defined by the apparent age of the star. Later this sequence was found to be wrong. However the class letters for each kind of star were retained but now they are not in alphabetical order. A star like our Sun will spend a ...
... a letter in sequence from ‘A’ through the alphabet. The original sequence was defined by the apparent age of the star. Later this sequence was found to be wrong. However the class letters for each kind of star were retained but now they are not in alphabetical order. A star like our Sun will spend a ...
AST 301 Introduction to Astronomy
... equator means that at some times of the year the Sun is in front of stars north of the equator and at some times it is south. Stars on the equator rise due east, pass 30o south of overhead (seen from Austin), and set due west. Stars north of the equator rise north of east, pass closer to overhead, a ...
... equator means that at some times of the year the Sun is in front of stars north of the equator and at some times it is south. Stars on the equator rise due east, pass 30o south of overhead (seen from Austin), and set due west. Stars north of the equator rise north of east, pass closer to overhead, a ...
Life_Cycle_of_a_Star_Powerpoint
... stage of the stars’ lifecycle (hint, hint, hint). Have a great snow day!! ...
... stage of the stars’ lifecycle (hint, hint, hint). Have a great snow day!! ...
What would the sky look like from the North Pole
... c) The image to the left shows a configuration in which the Sun is never to the zenith. Are there locations on Earth at which the Sun reaches the Zenith? If so, at what latitudes are they? At which time of the year do they reach the zenith? [hint: remember the tilt angle of the spin axis of the Eart ...
... c) The image to the left shows a configuration in which the Sun is never to the zenith. Are there locations on Earth at which the Sun reaches the Zenith? If so, at what latitudes are they? At which time of the year do they reach the zenith? [hint: remember the tilt angle of the spin axis of the Eart ...
Birth and Life of a Star
... very big and because of gravity they press on their centers very hard and use up their energy very quickly, so they usually only live for a few million years. Then they become a black hole or a neutron star. Small stars do not explode. They cool and shrink down into a white dwarf star. ...
... very big and because of gravity they press on their centers very hard and use up their energy very quickly, so they usually only live for a few million years. Then they become a black hole or a neutron star. Small stars do not explode. They cool and shrink down into a white dwarf star. ...
Birth and Life of a Star
... very big and because of gravity they press on their centers very hard and use up their energy very quickly, so they usually only live for a few million years. Then they become a black hole or a neutron star. Small stars do not explode. They cool and shrink down into a white dwarf star. ...
... very big and because of gravity they press on their centers very hard and use up their energy very quickly, so they usually only live for a few million years. Then they become a black hole or a neutron star. Small stars do not explode. They cool and shrink down into a white dwarf star. ...
PHYSICS 1500 - The University of Sydney
... Question 5 The illustration at left shows an artist’s impression of a ‘hot Jupiter’ – a giant planet in a very close orbit around its parent star. The first such planet discovered was 51 Pegasi b which takes 4.23 days to orbit a sun-like star. The system is about 50 light years from Earth. The plane ...
... Question 5 The illustration at left shows an artist’s impression of a ‘hot Jupiter’ – a giant planet in a very close orbit around its parent star. The first such planet discovered was 51 Pegasi b which takes 4.23 days to orbit a sun-like star. The system is about 50 light years from Earth. The plane ...
December 2015
... are emission nebulae. The light emission arises from gases ionized by high energy photons emitted from stars that have often been formed within the nebula. These star forming nebula are officially called H II (H two) regions. The color red orange is due to their large amounts of hydrogen. Of course ...
... are emission nebulae. The light emission arises from gases ionized by high energy photons emitted from stars that have often been formed within the nebula. These star forming nebula are officially called H II (H two) regions. The color red orange is due to their large amounts of hydrogen. Of course ...
light energy
... • Distances can be deceiving: Bright stars look close, but may be very far away Star Approx. Distance (LY) P. Centari ...
... • Distances can be deceiving: Bright stars look close, but may be very far away Star Approx. Distance (LY) P. Centari ...
VLA 90 cm Brogan et al. (2006)
... undoing millions of years of fusion • Core collapses until it becomes as dense as material can possibly be and a neutron star or black hole is formed • Infalling material from outer layers bounces off dense core • In tremendous release of energy, elements heavier than iron are formed and are spread ...
... undoing millions of years of fusion • Core collapses until it becomes as dense as material can possibly be and a neutron star or black hole is formed • Infalling material from outer layers bounces off dense core • In tremendous release of energy, elements heavier than iron are formed and are spread ...
THE 3-D UNIVERSE CONCEPTS
... brightness, their distance can be estimated even when they are in galaxies or star clusters that are extremely far away. Another example of standard candles are Cepheid variable stars. The brightness of these stars varies over a regular cycle. Astronomers have found that the time it takes a Cepheid ...
... brightness, their distance can be estimated even when they are in galaxies or star clusters that are extremely far away. Another example of standard candles are Cepheid variable stars. The brightness of these stars varies over a regular cycle. Astronomers have found that the time it takes a Cepheid ...
Chapter 9 “The Family of Stars “
... This chapter asks us to find out three things about stars. List them below. 1. How much energy they emit. 2. How big they are. 3. How much mass they contain. The distance from the Earth to the Sun is _________________ miles, or ____ light minutes. The next nearest star is ____ light years from Earth ...
... This chapter asks us to find out three things about stars. List them below. 1. How much energy they emit. 2. How big they are. 3. How much mass they contain. The distance from the Earth to the Sun is _________________ miles, or ____ light minutes. The next nearest star is ____ light years from Earth ...
Implications of the Search and Discovery
... Where to look in galaxy? • Disk region of galaxy – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
... Where to look in galaxy? • Disk region of galaxy – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
Implications of the Search and Discovery of Life in the Universe
... Where to look in galaxy? • Disk region of galaxy – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
... Where to look in galaxy? • Disk region of galaxy – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
Final Study Guide
... 10. State in your own words what the Hubble law really says and what its implications are concerning the expansion of the universe. 11. Discuss our local neighborhoods in space including the names and approximate sizes of our own objects. Neighborhoods include planets, stars, galactic arms, galaxies ...
... 10. State in your own words what the Hubble law really says and what its implications are concerning the expansion of the universe. 11. Discuss our local neighborhoods in space including the names and approximate sizes of our own objects. Neighborhoods include planets, stars, galactic arms, galaxies ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.