Session Two - A Sidewalk Astronomer in Charlottetown
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
Objects in the Sky Power Point
... On the first day of January 1801, Giuseppe Piazzi discovered an object which he first thought was a new comet. But after its orbit was better determined it was clear that it was not a comet but more like a small planet. Piazzi named it Ceres, after the Sicilian goddess of grain. Three other small b ...
... On the first day of January 1801, Giuseppe Piazzi discovered an object which he first thought was a new comet. But after its orbit was better determined it was clear that it was not a comet but more like a small planet. Piazzi named it Ceres, after the Sicilian goddess of grain. Three other small b ...
Quantum Well Electron Gain Structures and Infrared Detector Arrays
... an orbital signature with amplitude = 50 m/s in a 4.23day period around star 51 Pegasi • Mass = 0.5 MJUP First extra-solar planet ...
... an orbital signature with amplitude = 50 m/s in a 4.23day period around star 51 Pegasi • Mass = 0.5 MJUP First extra-solar planet ...
Friday, November 7 - Otterbein University
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
Astronomy
... d. both b and c 15. In the HR diagram, stable stars with the smallest mass and lowest temperature are found in the ______ of the diagram. a. center (main sequence) b. upper left corner c. upper right corner d. lower right corner ...
... d. both b and c 15. In the HR diagram, stable stars with the smallest mass and lowest temperature are found in the ______ of the diagram. a. center (main sequence) b. upper left corner c. upper right corner d. lower right corner ...
Extrasolar Planets, Lebo, 8-1
... • As of November 14, 2012, there are 850 known extrasolar planets(!!) and 611 extrasolar planetary systems. • All of this has happened in about 20 years – someone currently finds a new planet every couple of weeks or less • These planets are NOT generally like our Solar System ...
... • As of November 14, 2012, there are 850 known extrasolar planets(!!) and 611 extrasolar planetary systems. • All of this has happened in about 20 years – someone currently finds a new planet every couple of weeks or less • These planets are NOT generally like our Solar System ...
Uniqueness of the Earth, Lebo, 7-30
... Most all stars in the Milky Way are in the central bulge, a globular cluster or a spiral arm. In each of these locations the star densities are too high – the planetary orbits would be unstable. ...
... Most all stars in the Milky Way are in the central bulge, a globular cluster or a spiral arm. In each of these locations the star densities are too high – the planetary orbits would be unstable. ...
Jones group 1
... miles from the sun. •Jupiters moons might have aliens •It is more than one and a half times bigger then the other 8 planets. ...
... miles from the sun. •Jupiters moons might have aliens •It is more than one and a half times bigger then the other 8 planets. ...
june 2011 - Holt Planetarium
... The latter "works" only because Mercury is constantly bombarded by galactic cosmic rays; these slam into atomic nuclei, freeing up high-speed neutrons that, in turn, strike other atomic nuclei. These collisions create gamma rays of varying energy, depending on the elements that release them. Over ti ...
... The latter "works" only because Mercury is constantly bombarded by galactic cosmic rays; these slam into atomic nuclei, freeing up high-speed neutrons that, in turn, strike other atomic nuclei. These collisions create gamma rays of varying energy, depending on the elements that release them. Over ti ...
Uniqueness of the Earth, Lebo, 7-30
... Most all stars in the Milky Way are in the central bulge, a globular cluster or a spiral arm. In each of these locations the star densities are too high – the planetary orbits would be unstable. ...
... Most all stars in the Milky Way are in the central bulge, a globular cluster or a spiral arm. In each of these locations the star densities are too high – the planetary orbits would be unstable. ...
Astronomy
... 22. Which spectral class of stars (which letter) have the lowest temperature? _____________ ...
... 22. Which spectral class of stars (which letter) have the lowest temperature? _____________ ...
Forces in stars
... just balance the total pressure due to the radiation streaming out and the internal gas pressure of the star. This balance stops the star from blowing itself apart. In stars similar to our Sun the gas pressure is much larger than the radiation pressure. However in large massive stars the radiation p ...
... just balance the total pressure due to the radiation streaming out and the internal gas pressure of the star. This balance stops the star from blowing itself apart. In stars similar to our Sun the gas pressure is much larger than the radiation pressure. However in large massive stars the radiation p ...
Death of Low Mass Stars 8 Solar Masses or less
... ... but they are cooling. Their interior nuclear fires no longer burn, so they will continue to cool until they fade away. The white dwarfs are circled. ...
... ... but they are cooling. Their interior nuclear fires no longer burn, so they will continue to cool until they fade away. The white dwarfs are circled. ...
Mod three revision
... • mercury has been known since least the time of the Sumerians (3rd million bc) • the greeks gave mercury two • names,hermes as an evening star,Apollo for its morning star ...
... • mercury has been known since least the time of the Sumerians (3rd million bc) • the greeks gave mercury two • names,hermes as an evening star,Apollo for its morning star ...
The movements of planets and other nearby objects are
... the bird was faster. You would have this impression because the farther away a moving object is from you, the less it seems to move. Stars are always moving, but they are so far away that you cannot see their movements. Observers have seen the same constellation patterns for thousands of years. Only ...
... the bird was faster. You would have this impression because the farther away a moving object is from you, the less it seems to move. Stars are always moving, but they are so far away that you cannot see their movements. Observers have seen the same constellation patterns for thousands of years. Only ...
Intro L4 IQ
... Diurnal changes, for example, the transit of stars during the course of the night (or the sun during the day) are caused by the Earth’s rotation. Diurnal changes are far more obvious than annual changes ...
... Diurnal changes, for example, the transit of stars during the course of the night (or the sun during the day) are caused by the Earth’s rotation. Diurnal changes are far more obvious than annual changes ...
Integrative Studies 410 Our Place in the Universe
... ultraviolet radiation emitted by young O- or B-type (hot) stars located inside ...
... ultraviolet radiation emitted by young O- or B-type (hot) stars located inside ...
Lifetimes of stars
... the Sun’s lifetime would be 100 billion years. • But, by the time about 10% of the Sun’s H has been converted into He the solar structure will be changed and it will not be a main-sequence star. ...
... the Sun’s lifetime would be 100 billion years. • But, by the time about 10% of the Sun’s H has been converted into He the solar structure will be changed and it will not be a main-sequence star. ...
Solar System
... Spheres closest to the __________ lost most of their gases and dust/rock collected and became very dense = inner planets (Earth, Mars, etc) Spheres farther away retained gases to form ________________________________________ = Jupiter, Saturn, etc Planet: Any celestial body (other than comets ...
... Spheres closest to the __________ lost most of their gases and dust/rock collected and became very dense = inner planets (Earth, Mars, etc) Spheres farther away retained gases to form ________________________________________ = Jupiter, Saturn, etc Planet: Any celestial body (other than comets ...
Origins of the Universe
... • A group of stars that form a pattern in the sky • Stars of a constellation are often far apart from each other, but they appear grouped together when viewed from Earth • One of the 88 sectors into which astronomers divide the sphere of the skynamed after a traditional constellation in that sector ...
... • A group of stars that form a pattern in the sky • Stars of a constellation are often far apart from each other, but they appear grouped together when viewed from Earth • One of the 88 sectors into which astronomers divide the sphere of the skynamed after a traditional constellation in that sector ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.