Nebulae
... The Sun is just a star, an average star. It just looks so big and bright, because it is so close, compared with other stars. ...
... The Sun is just a star, an average star. It just looks so big and bright, because it is so close, compared with other stars. ...
Molecular Line Emission in Star
... The Doppler effect is the relationship between an observed frequency and the radial velocity of the emitting source. Velocities are usually calculated respect to the Local Standard of Rest (LSR), an ideal point in rotation around the Galactic centre as far as the Sun. The relationship between veloci ...
... The Doppler effect is the relationship between an observed frequency and the radial velocity of the emitting source. Velocities are usually calculated respect to the Local Standard of Rest (LSR), an ideal point in rotation around the Galactic centre as far as the Sun. The relationship between veloci ...
Luminosity Classes
... In general the less dense a star is the more luminous it will be (because it has more surface area). Luminosity and the thickness of the absorption lines are combined to group stars into Lumniosity Classes. Luminosity Classes are combined with spectral class to describe Stars. The Sun is Class V so ...
... In general the less dense a star is the more luminous it will be (because it has more surface area). Luminosity and the thickness of the absorption lines are combined to group stars into Lumniosity Classes. Luminosity Classes are combined with spectral class to describe Stars. The Sun is Class V so ...
Luminosity Classes
... In general the less dense a star is the more luminous it will be (because it has more surface area). Luminosity and the thickness of the absorption lines are combined to group stars into Lumniosity Classes. Luminosity Classes are combined with spectral class to describe Stars. The Sun is Class V so ...
... In general the less dense a star is the more luminous it will be (because it has more surface area). Luminosity and the thickness of the absorption lines are combined to group stars into Lumniosity Classes. Luminosity Classes are combined with spectral class to describe Stars. The Sun is Class V so ...
Stars - WhatisOutThere
... Around how many stars are in the sky each night? The number of stars in the sky still remains a mystery to this day, because there are just too many to count. Stars are not spread out everywhere in space but are grouped together in galaxies. Instead of counting the stars individually, scientists lo ...
... Around how many stars are in the sky each night? The number of stars in the sky still remains a mystery to this day, because there are just too many to count. Stars are not spread out everywhere in space but are grouped together in galaxies. Instead of counting the stars individually, scientists lo ...
Stars in the night Sky - ScienceEducationatNewPaltz
... roughly once every 24 hours. It is as though the stars, one might imagine, were bright spots fixed on the inside surface of a giant celestial sphere which rotates around us. Stars that are close to the North Pole never set beneath the horizon, and their circular paths are referred to as circumpolar. ...
... roughly once every 24 hours. It is as though the stars, one might imagine, were bright spots fixed on the inside surface of a giant celestial sphere which rotates around us. Stars that are close to the North Pole never set beneath the horizon, and their circular paths are referred to as circumpolar. ...
Bluffer`s Guide to Sirius
... here is a quick tip. If you hold your hand at arm’s length, and extend your thumb and little finger, then the distance between the tip of your thumb and the tip of your little finger will be about 20 degrees. If the tip of your little finger is touching the end star in Orion’s belt (Alnitak), assumi ...
... here is a quick tip. If you hold your hand at arm’s length, and extend your thumb and little finger, then the distance between the tip of your thumb and the tip of your little finger will be about 20 degrees. If the tip of your little finger is touching the end star in Orion’s belt (Alnitak), assumi ...
Star names and magnitudes
... By grouping stars into constellations, our ancestors developed the first system for unambiguously identifying celestial sources. Now, we use co-ordinate systems based on angular distance scales. Astronomical co-ordinates ...
... By grouping stars into constellations, our ancestors developed the first system for unambiguously identifying celestial sources. Now, we use co-ordinate systems based on angular distance scales. Astronomical co-ordinates ...
Star Map - Science Centre
... The Big Dipper is one of the most famous asterisms (star patterns) throughout history. In some places of the Northern Hemisphere, its seven brightest stars can be seen all year round. Further South near the equator, it is only visible for a few months. Merak and Dubhe are known as The Pointers, poin ...
... The Big Dipper is one of the most famous asterisms (star patterns) throughout history. In some places of the Northern Hemisphere, its seven brightest stars can be seen all year round. Further South near the equator, it is only visible for a few months. Merak and Dubhe are known as The Pointers, poin ...
9J Gravity and Space
... The astrology and mythology of the constellations, especially those of the signs of the zodiac may be enjoyable, but the science behind it isn’t quite the same. Precession: Due to the moon and sun’s pull of gravity, Earth wobbles as it spins. This wobbling is called precession and it's so slow that ...
... The astrology and mythology of the constellations, especially those of the signs of the zodiac may be enjoyable, but the science behind it isn’t quite the same. Precession: Due to the moon and sun’s pull of gravity, Earth wobbles as it spins. This wobbling is called precession and it's so slow that ...
Reach for the Stars – Div. B
... The Tarantula Nebula has an apparent magnitude of 8. Its distance is about 49 kpc or 160,000 light years. Its absolute brightness is so great that if it were as close to Earth as the Orion Nebula, the Tarantula Nebula would cast shadows. It is the most active and largest starburst region known in th ...
... The Tarantula Nebula has an apparent magnitude of 8. Its distance is about 49 kpc or 160,000 light years. Its absolute brightness is so great that if it were as close to Earth as the Orion Nebula, the Tarantula Nebula would cast shadows. It is the most active and largest starburst region known in th ...
Stars - Academic Computer Center
... almost always appear just as points of light. • But as we already know we can learn a lot from light! • Light can tell us about a star’s: ...
... almost always appear just as points of light. • But as we already know we can learn a lot from light! • Light can tell us about a star’s: ...
Stories in the Stars
... There’s no reason our perceptions and imaginations can’t thrive side by side with our scientific knowledge! The purpose of this series of stories is just that: To show the mythological and popular sides of the constellations, and also to point out the scientific marvels that exist within those patte ...
... There’s no reason our perceptions and imaginations can’t thrive side by side with our scientific knowledge! The purpose of this series of stories is just that: To show the mythological and popular sides of the constellations, and also to point out the scientific marvels that exist within those patte ...
nebula - Harding University
... The Sun Expands in Old Age Once a star like our Sun becomes a main sequence star, it remains stable for about 10 billion years. At the end of that time, the hydrogen fuel in the center of the Sun will become depleted; there is too much helium to efficiently continue the thermonuclear fusion proce ...
... The Sun Expands in Old Age Once a star like our Sun becomes a main sequence star, it remains stable for about 10 billion years. At the end of that time, the hydrogen fuel in the center of the Sun will become depleted; there is too much helium to efficiently continue the thermonuclear fusion proce ...
APOD Wall Calendar 2015 General: All Topics
... Explanation: What has happened to Saturn's moon Iapetus? Vast sections of this strange world are dark as coal, while others are as bright as ice. The composition of the dark material is unknown, but infrared spectra indicate that it possibly contains some dark form of carbon. Iapetus also has an unu ...
... Explanation: What has happened to Saturn's moon Iapetus? Vast sections of this strange world are dark as coal, while others are as bright as ice. The composition of the dark material is unknown, but infrared spectra indicate that it possibly contains some dark form of carbon. Iapetus also has an unu ...
C H A P T E R 2
... You have the option of including The Sky software CD with your students’ texts. The primary function of The Sky software is to serve as a planetarium on your computer. There are many demonstrations you can do or have your students do as lab experiments to illustrate concepts from this chapter. Set t ...
... You have the option of including The Sky software CD with your students’ texts. The primary function of The Sky software is to serve as a planetarium on your computer. There are many demonstrations you can do or have your students do as lab experiments to illustrate concepts from this chapter. Set t ...
FREE Sample Here
... You have the option of including The Sky software CD with your students’ texts. The primary function of The Sky software is to serve as a planetarium on your computer. There are many demonstrations you can do or have your students do as lab experiments to illustrate concepts from this chapter. Set t ...
... You have the option of including The Sky software CD with your students’ texts. The primary function of The Sky software is to serve as a planetarium on your computer. There are many demonstrations you can do or have your students do as lab experiments to illustrate concepts from this chapter. Set t ...
Stellarium Astronomy Software
... Winter Constellations Stars to look for... 1. Aldebaran 2. Pleiades 3. Orion Nebula 4. Betelgeuse 5. Rigel 6. Sirius 7. Procyon 8. Castor ...
... Winter Constellations Stars to look for... 1. Aldebaran 2. Pleiades 3. Orion Nebula 4. Betelgeuse 5. Rigel 6. Sirius 7. Procyon 8. Castor ...
AST101_lect_12
... • A: Temperatures from 8000-10,000K. They appear white. Strong absorption lines of hydrogen. Examples: Vega, Altair, Sirius. • F: slightly hotter than the Sun. Absorption lines of metals appear. Procyon is an F star. • G: temperatures between 5000 and 6000K. Appear yellow. Examples: Sun, α Centauri, ...
... • A: Temperatures from 8000-10,000K. They appear white. Strong absorption lines of hydrogen. Examples: Vega, Altair, Sirius. • F: slightly hotter than the Sun. Absorption lines of metals appear. Procyon is an F star. • G: temperatures between 5000 and 6000K. Appear yellow. Examples: Sun, α Centauri, ...
February 2013 - astronomy for beginners
... dependent on the actual brightness of that star and its distance from us. If some stars are intrinsically brighter than others then something must be making them brighter so stars must be different in some way. It turns out that the brightness is mainly determined by the size of the star. We must ho ...
... dependent on the actual brightness of that star and its distance from us. If some stars are intrinsically brighter than others then something must be making them brighter so stars must be different in some way. It turns out that the brightness is mainly determined by the size of the star. We must ho ...
Constellation Argo Navis
... 8,000 light-years away and 300 light-years wide that possesses vast star-forming regions; it has an overall magnitude of 8.0 and a massive apparent diameter, more than 2 degrees. Its central region is called the Keyhole Nebula, named in 1847 by John Herschel. It is about seven light-years wide and i ...
... 8,000 light-years away and 300 light-years wide that possesses vast star-forming regions; it has an overall magnitude of 8.0 and a massive apparent diameter, more than 2 degrees. Its central region is called the Keyhole Nebula, named in 1847 by John Herschel. It is about seven light-years wide and i ...
The Southern Fall PDF - Treasures of the Southern Sky
... few obvious star-forming regions, and it emphasizes the very bright nucleus. NGC 3521 is superficially similar to Messier 63 and belongs to the class of compact bright galaxies recognized as lacking a welldefined spiral arm structure. Such galaxies have an appearance that is as remote from the “gran ...
... few obvious star-forming regions, and it emphasizes the very bright nucleus. NGC 3521 is superficially similar to Messier 63 and belongs to the class of compact bright galaxies recognized as lacking a welldefined spiral arm structure. Such galaxies have an appearance that is as remote from the “gran ...
CONSTELLATION POWER POINT PROJECT
... wanted nothing to do with a god. Pulling a trick, Jupiter changed himself into a white bull and walked towards Europa who was picking flowers in a nearby field. Europa was then impressed and eventually got on the bull's back. Immediately the bull ran away and took Europa back to Crete. There, Jupite ...
... wanted nothing to do with a god. Pulling a trick, Jupiter changed himself into a white bull and walked towards Europa who was picking flowers in a nearby field. Europa was then impressed and eventually got on the bull's back. Immediately the bull ran away and took Europa back to Crete. There, Jupite ...
Orion (constellation)
Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky. It was named after Orion, a hunter in Greek mythology. Its brightest stars are Rigel (Beta Orionis) and Betelgeuse (Alpha Orionis), a blue-white and a red supergiant, respectively.