THE CELESTIAL SPHERE
... between them is of no consequence to day-to-day observations. We therefore imagine the stars to remain fixed on a sphere of very large radius with the earth at its centre. We call this sphere the celestial sphere. At any point of time we can only see the upper half of the celestial sphere. The point ...
... between them is of no consequence to day-to-day observations. We therefore imagine the stars to remain fixed on a sphere of very large radius with the earth at its centre. We call this sphere the celestial sphere. At any point of time we can only see the upper half of the celestial sphere. The point ...
File
... • Scientists estimate that over a period of almost 5 billion years, the sun has converted only 5% of its original hydrogen nuclei into helium nuclei. ...
... • Scientists estimate that over a period of almost 5 billion years, the sun has converted only 5% of its original hydrogen nuclei into helium nuclei. ...
The Lives of Stars
... moving more rapidly than average will escape, or “evaporate,” from such a cluster • A stellar association is a group of newborn stars that are moving apart so rapidly that their gravitational attraction for one another cannot pull them into orbit about one another ...
... moving more rapidly than average will escape, or “evaporate,” from such a cluster • A stellar association is a group of newborn stars that are moving apart so rapidly that their gravitational attraction for one another cannot pull them into orbit about one another ...
December 2015
... has five NGC objects including an open star cluster. It looks like a red Christmas poinsettia. Hubble’s Variable Nebula (NGC 2261) changes as clouds periodically block its illuminating star There was a supernova in 2002 that brightened a million times from magnitude 15 to 6 leaving a impressive shel ...
... has five NGC objects including an open star cluster. It looks like a red Christmas poinsettia. Hubble’s Variable Nebula (NGC 2261) changes as clouds periodically block its illuminating star There was a supernova in 2002 that brightened a million times from magnitude 15 to 6 leaving a impressive shel ...
January 2015 - Newbury Astronomical Society
... about 21:00 on 15th January. West is to the right and east to the left. The curved line across the sky is the ecliptic. This is the imaginary line along which the Sun, Moon and planets appear to move across the sky. The constellations through which the ecliptic passes are known as the constellations ...
... about 21:00 on 15th January. West is to the right and east to the left. The curved line across the sky is the ecliptic. This is the imaginary line along which the Sun, Moon and planets appear to move across the sky. The constellations through which the ecliptic passes are known as the constellations ...
Astronomy
... Explain assignment and get them started tonight. (c) Make two sketches of the Big Dipper. In one sketch, show the Big Dipper’s orientation in the early evening sky. In another sketch, show its position several hours later. In both sketches, show the North Star and the horizon. Record the date and ...
... Explain assignment and get them started tonight. (c) Make two sketches of the Big Dipper. In one sketch, show the Big Dipper’s orientation in the early evening sky. In another sketch, show its position several hours later. In both sketches, show the North Star and the horizon. Record the date and ...
GEARS Workshop Monday - Georgia Southern University
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
The Constellations
... • Star pattern repeats itself about every 24 hours… because of the rotation of Earth with respect to the distant stars! • Star pattern in the winter is different from that in the summer… because of the revolution of Earth around the Sun! • Stars do move back a nd forth (a teeny-tiny bit) in the sky ...
... • Star pattern repeats itself about every 24 hours… because of the rotation of Earth with respect to the distant stars! • Star pattern in the winter is different from that in the summer… because of the revolution of Earth around the Sun! • Stars do move back a nd forth (a teeny-tiny bit) in the sky ...
New light on our Sun`s fate - Space Telescope Science Institute
... generated and grow to 200 times its present radius. The Sun’s surface temperature will drop to about half its present value — about 3000 K (4900° F). However, given its much larger size, the Sun will be 1,000 times more luminous than it is now. As it expands, the Sun will completely engulf both Merc ...
... generated and grow to 200 times its present radius. The Sun’s surface temperature will drop to about half its present value — about 3000 K (4900° F). However, given its much larger size, the Sun will be 1,000 times more luminous than it is now. As it expands, the Sun will completely engulf both Merc ...
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.