Sermon Notes
... Each of these 12 major constellations has 3 other constellations associated with them. So in all there are 48 constellations in the Zodiac. Claudius Ptolemy of Alexandria (90 – 168 AD) was a Greek astronomer who borrowed his information from the ancient Babylonian texts and he listed the 48 constell ...
... Each of these 12 major constellations has 3 other constellations associated with them. So in all there are 48 constellations in the Zodiac. Claudius Ptolemy of Alexandria (90 – 168 AD) was a Greek astronomer who borrowed his information from the ancient Babylonian texts and he listed the 48 constell ...
Today`s Powerpoint
... B: luminosity vs temperature C: mass vs luminosity D: temperature vs diameter ...
... B: luminosity vs temperature C: mass vs luminosity D: temperature vs diameter ...
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society
... look near the southern horizon as Canopus comes in to view. >>>>> In the northeast, the two end stars in the Big Dipper’s bowl line up with Polaris, the North Star. Our North Pole points to it and the whole sky seems to rotate around it. ...
... look near the southern horizon as Canopus comes in to view. >>>>> In the northeast, the two end stars in the Big Dipper’s bowl line up with Polaris, the North Star. Our North Pole points to it and the whole sky seems to rotate around it. ...
ASTR 1120 General Astronomy: Stars and Galaxies
... Brightness (2) Brightness e.g. 10-12 Watts/m2 Simple and easy to understand If your eye is 10-4m2, then it collects 10-16W 4 stars at 10-12W/m2 together have 4x10-12W/m2 ...
... Brightness (2) Brightness e.g. 10-12 Watts/m2 Simple and easy to understand If your eye is 10-4m2, then it collects 10-16W 4 stars at 10-12W/m2 together have 4x10-12W/m2 ...
H-R Diagram
... After the supernova blast blows off the outer layers of the star, all that is left is the central core. The core now contains a mass between 1.4 and 3.0 times the sun's mass but condensed into a volume 10- to 20km across - roughly the size of a small town on Earth. The matter in a neutron star would ...
... After the supernova blast blows off the outer layers of the star, all that is left is the central core. The core now contains a mass between 1.4 and 3.0 times the sun's mass but condensed into a volume 10- to 20km across - roughly the size of a small town on Earth. The matter in a neutron star would ...
Integrative Studies 410 Our Place in the Universe
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
Volcanoes and Igneous Activity Earth
... • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
... • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
giant molecular clouds
... Large, dense cluster of (yellow and red) stars in the foreground; ~ 50 million years old ...
... Large, dense cluster of (yellow and red) stars in the foreground; ~ 50 million years old ...
Early Spring Observing – Millstone News Night Sky
... The Beehive contains a larger star population than most other nearby clusters. Under dark skies the Beehive Cluster looks like a nebulous object to the naked eye; thus it has been known since ancient times. We often find it, rather than the constellation it is found in (Cancer). From Wikipedia: The ...
... The Beehive contains a larger star population than most other nearby clusters. Under dark skies the Beehive Cluster looks like a nebulous object to the naked eye; thus it has been known since ancient times. We often find it, rather than the constellation it is found in (Cancer). From Wikipedia: The ...
Lecture 17: General Relativity and Black Holes
... (a) Stars near the center of the galaxy have very small orbits and very high orbital speeds (b) X-ray flares detected from Sag A* have very short variation timescales. (c) Infrared observations indicate there is a bar at the galactic center. (d) is a very strong source of X-ray and synchrotron emiss ...
... (a) Stars near the center of the galaxy have very small orbits and very high orbital speeds (b) X-ray flares detected from Sag A* have very short variation timescales. (c) Infrared observations indicate there is a bar at the galactic center. (d) is a very strong source of X-ray and synchrotron emiss ...
The Passage of Time Moon, Moonth, Month Sidereal (Star) Time
... Star time vs. Sun time • The Sidereal day is ~4 minutes shorter than the Solar day. • There are 365.25 Solar days and 366.25 Sidereal days in a year. • The Sun shifts with respect to the stars by about 1 degree each day. Consequently, we see different constellations in winter than in ...
... Star time vs. Sun time • The Sidereal day is ~4 minutes shorter than the Solar day. • There are 365.25 Solar days and 366.25 Sidereal days in a year. • The Sun shifts with respect to the stars by about 1 degree each day. Consequently, we see different constellations in winter than in ...
White Dwarf Stars - University of California Observatories
... • Recently, Joe Taylor and Russell Hulse won a Nobel Prize for their study of pulsars. • These objects act as cosmic clocks and are useful for ...
... • Recently, Joe Taylor and Russell Hulse won a Nobel Prize for their study of pulsars. • These objects act as cosmic clocks and are useful for ...
Supernovae: Heavy Elements
... • Main Sequence stars generally run from lower right (low temperature and luminosity) to upper left (high temperature and luminosity) • Exceptions - Secondary band of very cool, yet very luminous stars known as Giants ...
... • Main Sequence stars generally run from lower right (low temperature and luminosity) to upper left (high temperature and luminosity) • Exceptions - Secondary band of very cool, yet very luminous stars known as Giants ...
the Study Guide
... Comets: Scientists call comets “dirty snowballs” because they are made of ice and rocks.” The orbit of a comet brings it close to the sun, where it forms a tail, and then sends it far out beyond Pluto. G's: A force expressed in terms of Earth's gravity. This force is increased by high-speed travel, ...
... Comets: Scientists call comets “dirty snowballs” because they are made of ice and rocks.” The orbit of a comet brings it close to the sun, where it forms a tail, and then sends it far out beyond Pluto. G's: A force expressed in terms of Earth's gravity. This force is increased by high-speed travel, ...
Homework 1 – Exercise 1 1/9
... at the time of opposition, when it was closest to Earth. Consider two observers who are separated by a baseline equal to Earth’s diameter. If the difference in their measurements of Mars’s angular position is 33.6’’. What is the estimated distance between Earth and Mars? Express your answer in both ...
... at the time of opposition, when it was closest to Earth. Consider two observers who are separated by a baseline equal to Earth’s diameter. If the difference in their measurements of Mars’s angular position is 33.6’’. What is the estimated distance between Earth and Mars? Express your answer in both ...
What do we mean by habitable zone?
... (373/288)−2 ×1 AU= 0.6 AU to (273/288)−1 ×1 AU= 1.1 AU. In principle this would include Venus but not Mars. As an indication of how different assumptions can change the range, I have also seen ranges such as 0.95 AU to 1.37 AU for the habitable zone. It’s not exact. One reason is that there are many ...
... (373/288)−2 ×1 AU= 0.6 AU to (273/288)−1 ×1 AU= 1.1 AU. In principle this would include Venus but not Mars. As an indication of how different assumptions can change the range, I have also seen ranges such as 0.95 AU to 1.37 AU for the habitable zone. It’s not exact. One reason is that there are many ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.