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Homework #7 (Ch. 19)
Homework #7 (Ch. 19)

Quiz on Chapter 11
Quiz on Chapter 11

... 11-26. A friend takes a ride on a spaceship to a distant star and returns to Earth. You and your friend were the same age when your friend left on the spaceship. When your friend returns she a) will be the same age as you. b) will be younger than you. X c) will be older than you. d) could be older o ...
The Zodiac - Alchemical.org
The Zodiac - Alchemical.org

powerpoint  file
powerpoint file

... We are confident that very massive black holes exist at the centers of most galaxies. Black holes of a few solar masses are believed to form when massive stars undergo core collapse if the collapsed core exceeds the maximum of ~ 3 M permitted for neutron stars. The best evidence for such black hole ...
Word doc - UC-HiPACC - University of California, Santa Cruz
Word doc - UC-HiPACC - University of California, Santa Cruz

... Earth-like planets are low mass compared to stars. Even so, planets revolve not around a host star’s center (axis of rotation); instead, both star and planets revolve around the planetary system’s barycenter (center of mass). Like a smaller boy gamely wrestling a bigger one, the gravitational mass o ...
Nebulae - Innovative Teachers BG
Nebulae - Innovative Teachers BG

... are stellar clusters. The Galactic Stellar Clusters have a relatively small number (a few hundreds) of bright hot stars. These astronomical objects are observed in the spirals of the galactic plane and are realtively young – hundred millions years. Oposite to them are Globular Clusters found as a ru ...
Stellar Birth - Chabot College
Stellar Birth - Chabot College

... Same relative distance  comparing relative brightness is fair Same relative age  comparing masses and types of stars is fair ...
Unit 1
Unit 1

... are well mixed in the interior. ...
HR Diagram
HR Diagram

... It has been shown through observational data of many stars that the more massive a star, the more luminous it is. If you observe the H-R diagram on the cover of the lab, it is clear that there are fewer luminous stars as compared to the less luminous ones. In terms of the diagram, there are more sta ...
Issue 118 - Apr 2014
Issue 118 - Apr 2014

11.3 Measuring Distances in Space
11.3 Measuring Distances in Space

... we see today from Andromeda took 3.5 million years to get here, it is 3.5 million years old! ...
A Dart Board for the Bored An eye opening offer from the editors of
A Dart Board for the Bored An eye opening offer from the editors of

Hertzsprung2 - courses.psu.edu
Hertzsprung2 - courses.psu.edu

... What is the luminosity (relative to the sun) of a star 3 times more massive than the sun? ...
te acher`s guide te acher`s guide
te acher`s guide te acher`s guide

... Stars asks the following five questions about our Sun and all of its shining counterparts. Space travelers Adi and Woops help viewers clearly answer each question using computer graphics and space footage. What are the signs of the zodiac? The signs of the zodiac are twelve different groups of stars ...
Double Stars in Scorpio`s Claws
Double Stars in Scorpio`s Claws

... but you should be able to see two dim red stars that form a line with brighter ρ Scorpii between them. ...
Astronomical Toolkit
Astronomical Toolkit

Stars - MrCrabtreesScience
Stars - MrCrabtreesScience

... • Pressure from the core balance pressure from above layers, particles don’t move. • Energy bounces around inside this layer for an average of 170,000 years. • 7-2,000,000 K ...
Star Fromation and ISM
Star Fromation and ISM

... • The protostar continues to collapse; when the core is dense and hot enough, fusion begins • The star still continues to collapse until the inward force of gravity is balanced by the outward pressure from the core. The star is now on the main sequence. • More massive stars follow the same process, ...
Astronomy Assignment #10 Solutions
Astronomy Assignment #10 Solutions

... absolute )magnitudes for brighter (or more luminous) objects. 3. How is apparent magnitude different from absolute magnitude? Apparent magnitude expresses a stars brightness (that depends on its luminosity and distance), while the absolute magnitude expresses a star’s luminosity. In fact, the absolu ...
Star Track 2 - The Search for a Supermassive Black... Early radio astronomers detected an immensely
Star Track 2 - The Search for a Supermassive Black... Early radio astronomers detected an immensely

... of the Galaxy in the constellation Sagittarius; this mysterious object was designated SgrA*. More recently, infrared astronomers using adaptive optics have imaged individual stars near this object and tracked their motion with time. The observed orbit for one such star is plotted at right (also see ...
ppt
ppt

... • An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud, and are still gravitationally bound to each other • Open clusters are found only in spiral and irregular galaxies, in which active star formation is occurring. • The Pleiades is an open c ...
formation2
formation2

... • 2) The star has a stellar wind that is attempting to blow the gas away. The gas is restrained from moving in the disk, but perpendicular to the disk it can flow outward quite easily. ...
1705 Star Charts
1705 Star Charts

... brightest of all the stars, appears midway down the northwest sky. Canopus, second brightest, is southwest of overhead. Midway up the southeast sky are 'The Pointers', Beta and Alpha Centauri. Well below them is the hook-shaped pattern of Scorpius with orange Antares marking the Scorpion's body. Bel ...
PHYSICS 1500 - ASTRONOMY TOTAL
PHYSICS 1500 - ASTRONOMY TOTAL

Activity 4
Activity 4

... There  are  a  number  of  ways  to  measure  distances  to  stars  and  galaxies.    One  of  the  most  important   methods  for  measuring  stellar  distances  is  parallax.    Parallax  is  the  apparent  motion  of  stars  as ...
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Cygnus (constellation)



Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.
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