Society News - Bristol Astronomical Society
... galaxy heading towards Cassiopeia. This should help you locate the comet and will also give our astro–imagers a nice opportunity for a few pictures of these two celestial ‘fuzzies’, the evenings of the 3rd, 4th and 5th should be the best as this is when the two objects will apper closest to each oth ...
... galaxy heading towards Cassiopeia. This should help you locate the comet and will also give our astro–imagers a nice opportunity for a few pictures of these two celestial ‘fuzzies’, the evenings of the 3rd, 4th and 5th should be the best as this is when the two objects will apper closest to each oth ...
Star`s ReadingStar`s Reading(es)
... Astronomers classify stars according to their physical characteristics. The main characteristics used to classify stars are size, temperature, and brightness. Sizes of Stars When you look at stars in the sky, they all appear to be the same size. Many stars are actually about the size of the sun, whi ...
... Astronomers classify stars according to their physical characteristics. The main characteristics used to classify stars are size, temperature, and brightness. Sizes of Stars When you look at stars in the sky, they all appear to be the same size. Many stars are actually about the size of the sun, whi ...
AN INTRODUCTION TO THE STARS AND CONSTELLATIONS
... equator intersect at two points. The planes containing the two great circles are actually tilted by 23.5 degrees, the same angle by which the earth's axis of rotation is tilted away from the line perpendicular to its orbital plane about the sun. ...
... equator intersect at two points. The planes containing the two great circles are actually tilted by 23.5 degrees, the same angle by which the earth's axis of rotation is tilted away from the line perpendicular to its orbital plane about the sun. ...
Small Wonders: Taurus
... As to the naked eye sightings of lage numbers of the Pleiades, what may complicate the matter is the debate over the visibility of the nebulosity that runs throughout M45. Some say it's easily visible, others think it's not and what people are actually seeing and taking for nebulosity is the light o ...
... As to the naked eye sightings of lage numbers of the Pleiades, what may complicate the matter is the debate over the visibility of the nebulosity that runs throughout M45. Some say it's easily visible, others think it's not and what people are actually seeing and taking for nebulosity is the light o ...
SM_Taurus - Cloudy Nights
... As to the naked eye sightings of lage numbers of the Pleiades, what may complicate the matter is the debate over the visibility of the nebulosity that runs throughout M45. Some say it's easily visible, others think it's not and what people are actually seeing and taking for nebulosity is the light o ...
... As to the naked eye sightings of lage numbers of the Pleiades, what may complicate the matter is the debate over the visibility of the nebulosity that runs throughout M45. Some say it's easily visible, others think it's not and what people are actually seeing and taking for nebulosity is the light o ...
OBAFGKM(LT) extra credit due today. Mid
... Some stars are hot but faint, or cool but bright... these are not main sequence stars. Giants and Supergiants are 10–1000× bigger than the sun: larger even than jupiter’s orbit! ...
... Some stars are hot but faint, or cool but bright... these are not main sequence stars. Giants and Supergiants are 10–1000× bigger than the sun: larger even than jupiter’s orbit! ...
fred`s 2017 astronomy challenge
... Below are a list of astronomical objects available for viewing and/or photographing in 2017. From the wonders of the Great Orion Nebula at the beginning to the Ursids meteor shower in Decemb ...
... Below are a list of astronomical objects available for viewing and/or photographing in 2017. From the wonders of the Great Orion Nebula at the beginning to the Ursids meteor shower in Decemb ...
Astronomy Toolkit
... but are very distant – Some bright stars are very faint but happen to lie close to us ...
... but are very distant – Some bright stars are very faint but happen to lie close to us ...
Star Maps and Constellations
... chases the bears around in circles, i.e. keeps them at the North pole ...
... chases the bears around in circles, i.e. keeps them at the North pole ...
The Pennsylvanian Period in Alabama: Looking Up Astronomy and
... to ask where it was at that time. Although Rigel Kent's orbit is close to ours, its distance from us and its direction in the sky vary considerably over time. 310 million years ago, it was 2,900 light years away and not visible to the naked eye. Extrapolating back we discover that Rigel Kent is clos ...
... to ask where it was at that time. Although Rigel Kent's orbit is close to ours, its distance from us and its direction in the sky vary considerably over time. 310 million years ago, it was 2,900 light years away and not visible to the naked eye. Extrapolating back we discover that Rigel Kent is clos ...
Chapter 8: The Pennsylvanian Period in Alabama: Looking Up
... milion years! Rigel Kentaurus (Rigel Kent for short, also known as Alpha Centauri) is currently the nearest star (it is a system of 3). It is 4.3 light years away and is the third brightest star in the night sky. It is also thought to be almost 5 billion years old.8 Because Rigel Kent's three stars ...
... milion years! Rigel Kentaurus (Rigel Kent for short, also known as Alpha Centauri) is currently the nearest star (it is a system of 3). It is 4.3 light years away and is the third brightest star in the night sky. It is also thought to be almost 5 billion years old.8 Because Rigel Kent's three stars ...
Measuring stars Part I
... Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolute visual magnitude to Deneb without knowing its distance in the ...
... Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolute visual magnitude to Deneb without knowing its distance in the ...
Stars and Constellations
... of stars. Instead of seeing each star individually, the combined light appears as a faded band if the sky is very dark. With a telescope you can see many more stars. People in ancient times thought that all stars were part of the Milky Way. Today, we know of many other galaxies similar to the Milky ...
... of stars. Instead of seeing each star individually, the combined light appears as a faded band if the sky is very dark. With a telescope you can see many more stars. People in ancient times thought that all stars were part of the Milky Way. Today, we know of many other galaxies similar to the Milky ...
the stars
... magnitude versus spectral type and obtained the diagram. Today we can use the Virtual Observatory tools, so we do not need to perform astronomical observations during the night. We will observe in Stellarium the 25 brightest stars of the sky and then plot their spectral type versus absolute magnitud ...
... magnitude versus spectral type and obtained the diagram. Today we can use the Virtual Observatory tools, so we do not need to perform astronomical observations during the night. We will observe in Stellarium the 25 brightest stars of the sky and then plot their spectral type versus absolute magnitud ...
NAME: SECTION: Mon Tue Wed Thu ASTRONOMY LAB Stellarium
... 2. There are also a set of grid lines that radiate outward from the North Celestial Pole. These lines are analogous to the longitude lines on Earth. Notice that these lines are also labeled. The labels are not in degrees, but “hours” (e.g., “21h”). If you look carefully the labels run from 0h to 24 ...
... 2. There are also a set of grid lines that radiate outward from the North Celestial Pole. These lines are analogous to the longitude lines on Earth. Notice that these lines are also labeled. The labels are not in degrees, but “hours” (e.g., “21h”). If you look carefully the labels run from 0h to 24 ...
Time From the Perspective of a Particle Physicist
... • Stars range from .0001xLS to 1,000,000xLS Another scale: “magnitude” often used. A log scale to the power of ~2.5. YOU DON’T NEED TO KNOW. The lower the Mag the brighter the object PHYS 162 ...
... • Stars range from .0001xLS to 1,000,000xLS Another scale: “magnitude” often used. A log scale to the power of ~2.5. YOU DON’T NEED TO KNOW. The lower the Mag the brighter the object PHYS 162 ...
docx - STAO
... The effects of temperature and brightness may be discussed. Betelgeuse is 15 times bigger (in radius) than Rigel and it is closer by more than 100 ly. Why is Rigel brighter? The explanation is that Betelgeuse is a red supergiant star that has evolved off the main sequence. This means that it has bur ...
... The effects of temperature and brightness may be discussed. Betelgeuse is 15 times bigger (in radius) than Rigel and it is closer by more than 100 ly. Why is Rigel brighter? The explanation is that Betelgeuse is a red supergiant star that has evolved off the main sequence. This means that it has bur ...
Teacher Demo: Bright Star or Close Star?
... The effects of temperature and brightness may be discussed. Betelgeuse is 15 times bigger (in radius) than Rigel and it is closer by more than 100 ly. Why is Rigel brighter? The explanation is that Betelgeuse is a red supergiant star that has evolved off the main sequence. This means that it has bur ...
... The effects of temperature and brightness may be discussed. Betelgeuse is 15 times bigger (in radius) than Rigel and it is closer by more than 100 ly. Why is Rigel brighter? The explanation is that Betelgeuse is a red supergiant star that has evolved off the main sequence. This means that it has bur ...
The Clock of Giza (update)
... actually see this smaller accompanying star. The Dogon knew that it takes Sirius B 50 years to complete a full orbit around Sirius A. How could they have known this? We find the constellation of Orion in the right hand side top corner on the picture above. The three stars in Orion’s Belt are pointin ...
... actually see this smaller accompanying star. The Dogon knew that it takes Sirius B 50 years to complete a full orbit around Sirius A. How could they have known this? We find the constellation of Orion in the right hand side top corner on the picture above. The three stars in Orion’s Belt are pointin ...
CONSTELLATION TUCANA, THE TOUCAN
... Globular Cluster 47 Tucana is the second-brightest globular cluster in the sky after Omega Centauri, 47 Tucanae (NGC 104) lies just west of the Small Magellanic Cloud. Only 14,700 light-years distant from Earth, it is thought to be around 12 billion years old. Mostly composed of old, yellow stars, i ...
... Globular Cluster 47 Tucana is the second-brightest globular cluster in the sky after Omega Centauri, 47 Tucanae (NGC 104) lies just west of the Small Magellanic Cloud. Only 14,700 light-years distant from Earth, it is thought to be around 12 billion years old. Mostly composed of old, yellow stars, i ...
CONSTELLATIONS
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
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.