ABC`s of the Sky - Northern Stars Planetarium
... Io Io is a moon of Jupiter. It is about the same size as Earth’s moon, but it has many active volcanoes, which gives it an orangish color. Jupiter The largest planet in the Solar System. Jupiter is bigger than all the other planets put together. It is made of gases with no solid ground. It is the fi ...
... Io Io is a moon of Jupiter. It is about the same size as Earth’s moon, but it has many active volcanoes, which gives it an orangish color. Jupiter The largest planet in the Solar System. Jupiter is bigger than all the other planets put together. It is made of gases with no solid ground. It is the fi ...
AST 207 Homework 5 Due 14 October 2011
... 2. Life on Deneb. Here you will find out what it means to live near a giant like Deneb. Recall that the luminosity of a star, where T is its temperature and R is its radius. Star ...
... 2. Life on Deneb. Here you will find out what it means to live near a giant like Deneb. Recall that the luminosity of a star, where T is its temperature and R is its radius. Star ...
Polaris
... directly showing all three members of the Polaris trinary system. The nearer dwarf star is in an orbit of only 18.5 AU (2.8 billion km; about the distance from our Sun to Uranus) from Polaris A, explaining why its light is swamped by its close and much brighter companion. Polaris is 431 light years ...
... directly showing all three members of the Polaris trinary system. The nearer dwarf star is in an orbit of only 18.5 AU (2.8 billion km; about the distance from our Sun to Uranus) from Polaris A, explaining why its light is swamped by its close and much brighter companion. Polaris is 431 light years ...
So why are more massive stars more luminous?
... luminosity has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface temperature from 5500 K to 5800 K. ...
... luminosity has gone up by about 40%. These changes in the core have made the Sun’s outer layers expand in radius by 6% and increased the surface temperature from 5500 K to 5800 K. ...
The Missing Mass
... Clues to Galaxy Formation • Star formation occurs in the disks of galaxies, but not their bulges or halos. Most of this star formation occurs in spiral arms. • The bulge and halo of spiral galaxies only have old stars. • Galaxies come in all sizes, but the very largest galaxies are ...
... Clues to Galaxy Formation • Star formation occurs in the disks of galaxies, but not their bulges or halos. Most of this star formation occurs in spiral arms. • The bulge and halo of spiral galaxies only have old stars. • Galaxies come in all sizes, but the very largest galaxies are ...
PH607 – Galaxies
... contain O and B stars (newly made, short-lived stars), it is apparent that spiral arms are where star formation takes place. Because O and B stars are very luminous, spiral arms are very prominent in snapshots of galaxies similar to our own. For instance, the image below is of a galaxy called the Wh ...
... contain O and B stars (newly made, short-lived stars), it is apparent that spiral arms are where star formation takes place. Because O and B stars are very luminous, spiral arms are very prominent in snapshots of galaxies similar to our own. For instance, the image below is of a galaxy called the Wh ...
life cycle of stars notes
... supernova. 5. Massive star becomes neutron star 6. Supermassiv e star becomes a black hole ...
... supernova. 5. Massive star becomes neutron star 6. Supermassiv e star becomes a black hole ...
26.4 Groups of Stars
... explanation involves matter spiraling into a supermassive black hole with the mass of a billion suns. ...
... explanation involves matter spiraling into a supermassive black hole with the mass of a billion suns. ...
Mon Jul 29, 2013 SUN IN LEO? NO, CANCER!
... A little after 5 AM tomorrow, if skies are clear, you should see the old crescent moon low in the east. As dawn approaches, you may notice two, maybe three stars down below and to the left of the moon; in fact, these stars will appear to all lie along an invisible line stretching down diagonally fro ...
... A little after 5 AM tomorrow, if skies are clear, you should see the old crescent moon low in the east. As dawn approaches, you may notice two, maybe three stars down below and to the left of the moon; in fact, these stars will appear to all lie along an invisible line stretching down diagonally fro ...
Lives of stars
... brightness: binary system 1. How close the binary stars needs to be for any type of mass transfer to take place? Adetached, b-semi-detached, c- contact, dover contact. 2. In Which type of binary the atmospheric composition will be identical. A- detached, bsemi-detached, c- contact, d- over contact. ...
... brightness: binary system 1. How close the binary stars needs to be for any type of mass transfer to take place? Adetached, b-semi-detached, c- contact, dover contact. 2. In Which type of binary the atmospheric composition will be identical. A- detached, bsemi-detached, c- contact, d- over contact. ...
THE BIG BANG - Dublin City Schools
... more distant galaxies had higher redshifts (light takes millions or even billions of years to reach us from a distant galaxy) This means we are seeing an image from millions or billions of years ago. He noticed that the light, when it was emitted, would have shorter wavelengths. But, he observed lon ...
... more distant galaxies had higher redshifts (light takes millions or even billions of years to reach us from a distant galaxy) This means we are seeing an image from millions or billions of years ago. He noticed that the light, when it was emitted, would have shorter wavelengths. But, he observed lon ...
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.