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More Images of Cassiopeia A
1
Click for large jpg X-ray Elements
Combined &
Separate
Jpeg, Tif
Click for large jpg X-ray Elements
Layout 1
Jpeg, Tif
Click for large jpg X-ray Elements
Layout 2
Jpeg, Tif

Click for large jpg Silicon
Jpeg, Tif
Click for large jpg Sulfur
Jpeg, Tif
Click for large jpg Calcium
Jpeg, Tif
Click for large jpg Iron
Jpeg, Tif
Click for large jpg Blast wave
Jpeg, Tif
X-ray Images of Cassiopeia A
These images from NASA's Chandra X-ray Observatory show the location of different elements in the Cassiopeia A supernova remnant including silicon (red), sulfur (yellow), calcium (green) and iron (purple). Each of these elements produces X-rays within narrow energy ranges, allowing maps of their location to be created. The blast wave from the explosion is seen as the blue outer ring. Astronomers study supernova remnants to better understand how stars produce and then disseminate many of the elements on Earth and in the cosmos at large.
(Credit: NASA/CXC/SAO )

2
Click for large jpg Origins: Solar
System Elements
Jpeg, Tif
Origins: SolarSystem Elements
Oxygen is the most abundant element in the human body (about 65% by mass), calcium helps form and maintain healthy bones and teeth, and iron is a vital part of red blood cells that carry oxygen through the body. All of the oxygen in the Solar System comes from exploding massive stars. About half of the calcium and about 40% of the iron also come from these explosions, with the balance of these elements being supplied by explosions of smaller mass, white dwarf stars.
(Credit: NASA/CXC/SAO/K. Divona)

Reference: Science Blog from the SDSS, Origin of the Elements in the Solar System by Jennifer Johnson

3
Click for large jpg Pre-Supernova
Star
Jpeg, Tif
Pre-Supernova Star Illustration
As it nears the end of its evolution, heavy elements produced by nuclear fusion inside the star are concentrated toward the center of the star.
(Credit: NASA/CXC/S. Lee)



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