Goals of the day Clickers Order of Magnitude Astronomy
... • The solar system is light-hours in size • The Local group is millions of light-years in size ...
... • The solar system is light-hours in size • The Local group is millions of light-years in size ...
An Introduction to Astronomy and Cosmology
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
The Hidden Lives of Galaxies NSTA 2001
... Throughout its life, these two forces determine the stages of a star’s life. ...
... Throughout its life, these two forces determine the stages of a star’s life. ...
Stars
... increasingly rare. Our sun is one of the larger stars in the immediate neighborhood, and there is good evidence that this holds true for other areas of our galaxy as well. It seems that dim stars in the universe are like rabbits and bureaucrats: They may not be very bright, but there are a lot of th ...
... increasingly rare. Our sun is one of the larger stars in the immediate neighborhood, and there is good evidence that this holds true for other areas of our galaxy as well. It seems that dim stars in the universe are like rabbits and bureaucrats: They may not be very bright, but there are a lot of th ...
HR Diagram (Temperature Versus Absolute Magnitude)
... single ray of light can travel in space in one year (9.5 trillion kilometers) • A single ray of light travels at about 300,000 kilometers per second in space ...
... single ray of light can travel in space in one year (9.5 trillion kilometers) • A single ray of light travels at about 300,000 kilometers per second in space ...
Document
... c) objects that are not quite massive enough to be stars d) cooled off white dwarfs e) the objects at the centers of planetary nebulae 29. What is not the same for each star in a cluster? a) age, b) mass, c) composition, d) distance from Earth 30. Nearly all the elements found in our environment wer ...
... c) objects that are not quite massive enough to be stars d) cooled off white dwarfs e) the objects at the centers of planetary nebulae 29. What is not the same for each star in a cluster? a) age, b) mass, c) composition, d) distance from Earth 30. Nearly all the elements found in our environment wer ...
StarType
... When you look at the stars you’ll notice that some are white, some are yellow, and some are red. Stars are classified according to their colors, ranging from electric blue for the hottest stars to dull red for the coolest stars. Early spectrometers identified emission lines in the stars’ spectrum fo ...
... When you look at the stars you’ll notice that some are white, some are yellow, and some are red. Stars are classified according to their colors, ranging from electric blue for the hottest stars to dull red for the coolest stars. Early spectrometers identified emission lines in the stars’ spectrum fo ...
The Life Cycle of Stars Webquest
... E = MC2 and learn how mass in the form of hydrogen atoms is converted to helium and causes a release of energy that makes stars shine. 3. You will also begin to understand the forces involved in stars that maintain this nuclear reaction and how these forces change as the star ages. 4. You will explo ...
... E = MC2 and learn how mass in the form of hydrogen atoms is converted to helium and causes a release of energy that makes stars shine. 3. You will also begin to understand the forces involved in stars that maintain this nuclear reaction and how these forces change as the star ages. 4. You will explo ...
December 15th 2016 - Newcastle Astronomical Society
... • The Quadrantids is usually active between the end of December and the second week of January, and peaks around January 3rd to January 5th. Unlike other meteor showers that tend to stay at their peak for about two days, the peak period of the Quadrantids is only for a few hours. • The shower owes i ...
... • The Quadrantids is usually active between the end of December and the second week of January, and peaks around January 3rd to January 5th. Unlike other meteor showers that tend to stay at their peak for about two days, the peak period of the Quadrantids is only for a few hours. • The shower owes i ...
BAS - Monthly Sky Guide
... Corona Borealis is home to dozens of galaxies around the crown itself and stretching across to neighbouring Hercules. The constellation is always rather low in the sky and this can make observing its faint galaxies even more challenging. Many of the galaxies are 13th to 15th magnitude and greater s ...
... Corona Borealis is home to dozens of galaxies around the crown itself and stretching across to neighbouring Hercules. The constellation is always rather low in the sky and this can make observing its faint galaxies even more challenging. Many of the galaxies are 13th to 15th magnitude and greater s ...
lifedeath - University of Glasgow
... Hydrogen fusion – fuelling a star’s nuclear furnace H = Hydrogen He = Helium ...
... Hydrogen fusion – fuelling a star’s nuclear furnace H = Hydrogen He = Helium ...
1” “Sky-Notes” of the Open University Astronomy Club. September
... star charts or those such as available from the Variable Star Section of the BAA. The Section operates a “mentor” system where novices to variable star observation are given guidance and support. ...
... star charts or those such as available from the Variable Star Section of the BAA. The Section operates a “mentor” system where novices to variable star observation are given guidance and support. ...
HR Diagram - Geneva 304
... a. optical doubles b. double star / binary star c. spectroscopic binary 43. How could you recognize an eclipsing binary? 44. About what percent of all stars are members of a double star system? 45. What is a variable star? 46. Of what spectral type are Mira variables, and how big are they relative t ...
... a. optical doubles b. double star / binary star c. spectroscopic binary 43. How could you recognize an eclipsing binary? 44. About what percent of all stars are members of a double star system? 45. What is a variable star? 46. Of what spectral type are Mira variables, and how big are they relative t ...
Page 1 Astronomy 110 Homework #08 Assigned: 03/13/2007 Due
... B) The stars must have very similar surface temperatures. C) The line of sight from Earth to the star system must be in or very close to the orbital plane of the stars. D) The line of sight from Earth to the star system must be very close to the perpendicular to the orbital plane of the stars. ...
... B) The stars must have very similar surface temperatures. C) The line of sight from Earth to the star system must be in or very close to the orbital plane of the stars. D) The line of sight from Earth to the star system must be very close to the perpendicular to the orbital plane of the stars. ...
W > 1 - The Open University
... The Virgo supercluster of galaxies, which extends into the neighbouring constellation of Coma Berenices, contains in excess of a thousand galaxies. Our own Local Group of galaxies is probably an outlying "village" of this "Grand Metropolis". Virgo and Coma provide the chance to collect a "hatful" of ...
... The Virgo supercluster of galaxies, which extends into the neighbouring constellation of Coma Berenices, contains in excess of a thousand galaxies. Our own Local Group of galaxies is probably an outlying "village" of this "Grand Metropolis". Virgo and Coma provide the chance to collect a "hatful" of ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.