Stars
... If the velocity is increased further it can escape. The escape velocity depends of the mass and radius of Earth. ...
... If the velocity is increased further it can escape. The escape velocity depends of the mass and radius of Earth. ...
PDF file
... - all planets (except the Earth) orbit around the Sun - the Sun and Moon orbit around the Earth - can not explain stellar parallax (not observed at that time) ...
... - all planets (except the Earth) orbit around the Sun - the Sun and Moon orbit around the Earth - can not explain stellar parallax (not observed at that time) ...
and Concept Self-test (1,2,3,5,6,7,8,9)
... star would weigh a billion tons! Because of its small size and high density, a neutron star possesses a surface gravitational field about 2 x 1011 times that of Earth. ...
... star would weigh a billion tons! Because of its small size and high density, a neutron star possesses a surface gravitational field about 2 x 1011 times that of Earth. ...
The Local Sky The Local Sky
... – The celestial sphere is a convenient tool for describing the sky – We can specify the position of an object in the local sky by its altitude above the horizon and its direction along the horizon – We can measure a stars angular size but not it actual size with our naked eye. ...
... – The celestial sphere is a convenient tool for describing the sky – We can specify the position of an object in the local sky by its altitude above the horizon and its direction along the horizon – We can measure a stars angular size but not it actual size with our naked eye. ...
Star Gazing
... *Explain why the date and time are included on star charts State the magnitude scale for stars. Given a star’s magnitude, identify if it is bright or faint. Identify the first four Greek letters. For what do astronomers use them? Define rotation and revolution as used by astronomers. Use them correc ...
... *Explain why the date and time are included on star charts State the magnitude scale for stars. Given a star’s magnitude, identify if it is bright or faint. Identify the first four Greek letters. For what do astronomers use them? Define rotation and revolution as used by astronomers. Use them correc ...
A Possible Effect of Cosmic Rays on Celestial Chemical Composition
... smaller than that gtven in (1), so that the general cosmic rays impinging on the solar surface give a contribution to such nuclear transformations less than the solar ones do. (ii) The same reason applies to the nuclear transformations of interstellar elements ; those are quite small, though not neg ...
... smaller than that gtven in (1), so that the general cosmic rays impinging on the solar surface give a contribution to such nuclear transformations less than the solar ones do. (ii) The same reason applies to the nuclear transformations of interstellar elements ; those are quite small, though not neg ...
featured in the Arizona Daily Star
... they can’t visit a star to extract a sample of it. But there are ways to get a piece of a star and study it in the laboratory. That’s what I do — I study pieces of ancient stardust. But instead of using a telescope, I use a microscope to look for stardust inside meteorites. Over their lifetimes, sta ...
... they can’t visit a star to extract a sample of it. But there are ways to get a piece of a star and study it in the laboratory. That’s what I do — I study pieces of ancient stardust. But instead of using a telescope, I use a microscope to look for stardust inside meteorites. Over their lifetimes, sta ...
Solar System`s Age - Empyrean Quest Publishers
... • The dominance of hydrogen and helium is the same as in other stars and galaxies, throughout the universe • Hydrogen and helium atoms are produced in the Big Bang, which created the universe 13.7 billion years ago. • All heavier elements were manufactured by stars later. – Thermal-nuclear fusion re ...
... • The dominance of hydrogen and helium is the same as in other stars and galaxies, throughout the universe • Hydrogen and helium atoms are produced in the Big Bang, which created the universe 13.7 billion years ago. • All heavier elements were manufactured by stars later. – Thermal-nuclear fusion re ...
sc_examII_fall_2002 - University of Maryland
... D. a few thousand miles away. E. at the Moon’s distance. 13. A planetary nebula, like the Ring Nebula shown in class, is A. evidence that planets exist around other stars. B. gas that is about to collapse and form planets. C. a giant molecular cloud that is about to form new stars. D. a very dense ...
... D. a few thousand miles away. E. at the Moon’s distance. 13. A planetary nebula, like the Ring Nebula shown in class, is A. evidence that planets exist around other stars. B. gas that is about to collapse and form planets. C. a giant molecular cloud that is about to form new stars. D. a very dense ...
Intro To Astronomy
... • Stars and other things outside our solar system have a particular Right Ascension and Declination or RA and DEC. • Earth’s Equator, North Pole, and South Pole line up with the Equator and North Pole, and South Pole, of the Celestial Sphere ...
... • Stars and other things outside our solar system have a particular Right Ascension and Declination or RA and DEC. • Earth’s Equator, North Pole, and South Pole line up with the Equator and North Pole, and South Pole, of the Celestial Sphere ...
Sirius Astronomer - Orange County Astronomers
... Small black holes (formed from a star collapsing) and supermassive black holes (found at the centers of most large galaxies) are both common. But intermediate-mass black holes are quite rare. This one was found in 2009 toward the edge of galaxy ESO 243-49 by the X-rays given off by material falling ...
... Small black holes (formed from a star collapsing) and supermassive black holes (found at the centers of most large galaxies) are both common. But intermediate-mass black holes are quite rare. This one was found in 2009 toward the edge of galaxy ESO 243-49 by the X-rays given off by material falling ...
14-1 Reading Questions: Neutron Stars
... 1. A neutron star, containing a little more than _________ solar mass, compressed to a radius of about __________, can be left as a remnant after a type ______ supernova explosion. A neutron star’s density is so high that physicists calculate that this material is stable only as a __________________ ...
... 1. A neutron star, containing a little more than _________ solar mass, compressed to a radius of about __________, can be left as a remnant after a type ______ supernova explosion. A neutron star’s density is so high that physicists calculate that this material is stable only as a __________________ ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... Pluto has recently had its status downgraded to become a ‘dwarf planet’. Briefly outline the arguments for this change based on (i) its mass and size (ii) the characteristics of its orbit ...
... Pluto has recently had its status downgraded to become a ‘dwarf planet’. Briefly outline the arguments for this change based on (i) its mass and size (ii) the characteristics of its orbit ...
Starbirth and Interstellar Matter
... 4. Current ideas picture interstellar dust grains as: A. small (micrometers), made of ices only. B. small (micrometers), made of ices and rocky materials. C. small (micrometers), made of ices, rocks, and metals. D. large (meters), made of ices, rocks, and metals. 5. A way to form hydrogen molecules ...
... 4. Current ideas picture interstellar dust grains as: A. small (micrometers), made of ices only. B. small (micrometers), made of ices and rocky materials. C. small (micrometers), made of ices, rocks, and metals. D. large (meters), made of ices, rocks, and metals. 5. A way to form hydrogen molecules ...
HighRedshiftGalaxies
... the lower panel of this figure can be used to improve the mass estimate. Importantly, such a technique for determine accurate stellar masses can then be applied to all galaxies, regular or peculiar, irrespective of their dynamical state and over a range in redshift. The technique can be considered a ...
... the lower panel of this figure can be used to improve the mass estimate. Importantly, such a technique for determine accurate stellar masses can then be applied to all galaxies, regular or peculiar, irrespective of their dynamical state and over a range in redshift. The technique can be considered a ...
Meteors, Meteoroids, and Meteorites
... rich in silicon and oxygen, with smaller amounts of iron, magnesium, and other elements. One group of stony meteorites is called chondrites. They are pieces of the same material from which the planets formed. Another group of stony meteorites is called the achondrites. They were once part of a large ...
... rich in silicon and oxygen, with smaller amounts of iron, magnesium, and other elements. One group of stony meteorites is called chondrites. They are pieces of the same material from which the planets formed. Another group of stony meteorites is called the achondrites. They were once part of a large ...
The Sky
... Eccentricity of Earth’s Orbit • Solar days are thus longest at perihelion since the Earth must rotate farther to catch up with the rapid rate at which the Sun is moving across the sky (i.e., the rapid rate the Earth is moving in its orbit). ...
... Eccentricity of Earth’s Orbit • Solar days are thus longest at perihelion since the Earth must rotate farther to catch up with the rapid rate at which the Sun is moving across the sky (i.e., the rapid rate the Earth is moving in its orbit). ...
Galaxies Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015
... Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015 ...
... Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015 ...
Astronomical terms and constants
... mbol = Mbol + 5 log (d/10pc) = apparent bolometric magnitude of a star at a distance d . V = MV + 5 log (d/10pc) = apparent “visual” magnitude of a star as seen in the sky. B = MB + 5 log (d/10pc) = apparent “blue” magnitude of a star as seen in the sky. B − V = MB − MV = a difference between “visua ...
... mbol = Mbol + 5 log (d/10pc) = apparent bolometric magnitude of a star at a distance d . V = MV + 5 log (d/10pc) = apparent “visual” magnitude of a star as seen in the sky. B = MB + 5 log (d/10pc) = apparent “blue” magnitude of a star as seen in the sky. B − V = MB − MV = a difference between “visua ...
June 2013 Kepler Space Telescope Update
... California, Irvine, USA, who led the study. "It's unusual not only due to the high mass and intense star-forming activity of the two galaxies involved, but also because it exposes a crucial, intermediate step of the formation process. Such starbursting galaxies have very short lifetimes – in cosmolo ...
... California, Irvine, USA, who led the study. "It's unusual not only due to the high mass and intense star-forming activity of the two galaxies involved, but also because it exposes a crucial, intermediate step of the formation process. Such starbursting galaxies have very short lifetimes – in cosmolo ...
notes
... placed it at the same distance that it currently is from our Sun (T = 5800 K) • We moved it to an M-type star (T = 3000 K) and placed it at the same distance that it currently is from our Sun • In each of these cases, where should we place the Earth to prevent these effects? ...
... placed it at the same distance that it currently is from our Sun (T = 5800 K) • We moved it to an M-type star (T = 3000 K) and placed it at the same distance that it currently is from our Sun • In each of these cases, where should we place the Earth to prevent these effects? ...