Giant Arc of Light --A Mystery Observed Behind a Super-Massive Galaxy 10 Billion Light Years Away June 27, 2012 Astronomers using NASA's Hubble Space Telescope have found a puzzling arc of light behind an extremely massive cluster of galaxies residing 10 billion light-years away.
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"NEUTRON STARS are dying stars that are seemingly ‘off the charts’ in almost every category. They are small and extremely dense; about 20 km in diameter with masses of about 1.4 times that of our Sun, meaning that on Earth, one teaspoon of a neutron star would weigh about 100 million tons. They also rotate exceeding fast, about 700 times per second...the outer surface of these collapsed stars is likely to be 10 billion times stronger than steel or any other of Earth’s strongest alloys..."
The Cone Nebula lies in the southern part of NGC 2264, the Christmas Tree cluster, with which is shares the NGC designation. This is a rich region with much nebulosity and many interesting objects. The Christmas Tree cluster has at its base the variable star S Mon (also known as 15 Mon). If viewed with this northern portion at the bottom, the stars of this cluster form the outline of a Christmas Tree, topped by the 7th magnitude star HD 47887.
Cat's eye Nebula is 3 thousand years light-years from Earth. One of the most famous planetary nebula, NGC 6543 is an extension of half a year and represents a final, brief but glorious life of a star type Sun.
Stellar Babies by nasa.gov: Infant stars glow gloriously pink in this infrared image of the Serpens Constellation's star-forming region, located approximately 8484 light-years away. #Stellar_Babies #nasa #Serpens_Constellation #nasa
a Wolf ~ Rayet nebula is a nebula which surrounds a Wolf ~ Rayet star which is [often referred to as WR stars] a heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium & nitrogen or carbon + the spectra indicate very high surface temperatures of 30,000 K to around 200,000 K, surface enhancement of heavy elements, strong stellar winds