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script
script

... 1. Strong lithium line. Lithium is destroyed at temperatures of a few million K. The star starts with lithium present, but through time convection brings it to the bottom of the convection zone where it is destroyed ...
For stars
For stars

2008F-ExtraSolarPlanets-Smith
2008F-ExtraSolarPlanets-Smith

... varied the mass of the planet to range from 1/300th the mass of Jupiter to ten times the mass of Jupiter. The data shows that fainter stars can be seen with planets of smaller mass. Analyzing this information using the center of mass and Kepler’s Law shows why this is true. As the mass of the planet ...
Distant Stars - How far away is it
Distant Stars - How far away is it

... Remember the red and green light of the aurora borealis and the structure of molecules we discussed in our segment on the Heliosphere. The aurora is a good example of light being emitted as electrons change energy levels. But for our purposes here, we want to examine what happens when light from the ...
galaxies and stars
galaxies and stars

... 50. Measurements indicate that a certain star has a very high luminosity (100,000 times that of our sun) and yet has a temperature that is cooler than the sun. What can you conclude about this observation? A B C D ...
More detailed notes - Particle Physics and Particle Astrophysics
More detailed notes - Particle Physics and Particle Astrophysics

... even though theory suggests they would have been very massive. This would have had significant consequences for their interior structure. ...
Tips on taking Astro sights
Tips on taking Astro sights

... obtained from astronomical observations is not so reliable as one obtained from terrestrial bearings. The transferred position line If two position lines are obtained at approximately the same moment, the ship's position is decided by their point of intersection. If there is an appreciable interval ...
HR DIAGRAM (Page 1) - McDonald Observatory
HR DIAGRAM (Page 1) - McDonald Observatory

The Sky Tonight - Northern Stars Planetarium
The Sky Tonight - Northern Stars Planetarium

... Binary Star: Two stars that revolve around each other. Half of all the stars we see in the night sky are actually double or multiple star systems, but their distance from us makes them look like one star to the unaided eye. Circumpolar Constellations: Constellations that are visible through the enti ...
Cosmochemistry from Nanometers to Light- Years A Written by
Cosmochemistry from Nanometers to Light- Years A Written by

... ages determined using short-lived isotopes such as aluminum-26 (see PSRD article Using Aluminum-26 as a Clock for Early Solar System Events) are consistent. The great achievement is that the combination of long-lived lead isotopes and shortlived isotopes provide an astonishingly high-resolution time ...
Refuges for Life in a - University of Arizona
Refuges for Life in a - University of Arizona

... has been a huge breakthrough: the discovery of giant, Jupitersize planets around sunlike stars. Not every sunlike star has such a planet. In fact, the giant planets discovered to date are primarily found around stars that are rich in chemical elements heavier than helium— what astronomers call “meta ...
Star in a Box
Star in a Box

Practice Exam for 3 rd Astronomy Exam
Practice Exam for 3 rd Astronomy Exam

... only electron removed creating a positive hydrogen ion. HI is regular neutral hydrogen with no electrons removed. You cannot have HIII because that would mean that 2 electrons have been removed from hydrogen and hydrogen only has one electron. HII regions are the signature of a star forming region, ...
Stellar Evolution – Cosmic Cycles of Formation and Destruction
Stellar Evolution – Cosmic Cycles of Formation and Destruction

... the Trifid. The tip of a finger-like Evaporating Gaseous Globule, or "EGG", points back at the Trifid's central star. A tiny jet emerging from the EGG and a patch of reflected light suggest that a young stellar object is buried in the tip of the jet. This young stellar object was uncovered a few ten ...
Astronomy Assignment #1
Astronomy Assignment #1

Fixed Stars
Fixed Stars

... Fixed Stars An introduction for illustrations and text about some fixed stars and their energies, which are significant to the evolutions in our Solar System, inclusive Earth. Some fundamental facts are necessary for people, to grasp the idea of how the Universe can be, and is, a living Being, maint ...
Earth Motions and the Heavens
Earth Motions and the Heavens

... You go out tonight and see the brightest star in the constellation Orion just rising above your eastern horizon at 10 PM. One week later at 10 PM this ...
black holes activity
black holes activity

... and helium are the most abundant elements, just like on the Jovian planets 2.When is the Chromosphere and Corona visible? -Chromosphere- not visible unless a ___________________ is occurring, sight of solar storms -which layer is hotter, why? Corona - spectral lines are dramatically different due to ...
s%nffi - mrtavares
s%nffi - mrtavares

... Early in the twentieth century, Einar Hertzsprung and Henry Russell independently developed a graph used to study stars. It is now called a Hertzsprr.urg-Russell diagran-r (H-R ciiagram). ffiA HertzsprungRussell diagram shgws the relationship between the absolute magnitude and temperature of stars. ...
v A v A
v A v A

... Ways to Measure Stellar Radii Method 2: Using Eclipsing Binaries: Explanation If orbital inclination i ~ 90, orbital plane is close to line of sight and stars will partially or totally eclipse each other. Duration of eclipses, combined with orbital speeds, gives stellar radii. ...
THE SUN IS NOT AN AVERAGE STAR Sometimes biblical creation
THE SUN IS NOT AN AVERAGE STAR Sometimes biblical creation

Quiz 3
Quiz 3

... How is this related to the statement that in the time Earth rotates 365.2425 times with respect to the sun it will have rotated 366.2425 times with respect to the stars? ...
H-RDiagramSE
H-RDiagramSE

Document
Document

... I. Select bright objects that you can see throughout the Milky Way and trace their directions and distances II. Observe objects at wavelengths other than visible (to eliminate problems caused by dust, gas, other galactic bodies, etc), and catalogue their directions and distances ...
Geoscience Final Review material
Geoscience Final Review material

... complete one “wobble” around the zodiac? a. 10,000 years c. 20,000 years b. 25,000 years d. 100,000 years 135. Another name for the “wobble” of the Earth is what? a. Differentiation c. Precession b. Retrograde motion d. Rotation 136. Binary Star systems are useful, because they help determine what? ...
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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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