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At about 11 times larger than the sun and 40 times... - A Spaceman, They Say I Am.
At about 11 times larger than the sun and 40 times heavier, is Zeta Puppis, also known as Naos.  A young “runaway star” about 970 light-years away from the Sun, it is a spectral class type O5Ia luminous blue-white supergiant.  While only about 4 million years old, it has moved more than 400 light-years from where it formed in the Trumpler 10 cluster.  Its surface temperature is over 42,000°K, and including radiation at all frequencies, it is perhaps as much as 360,000 times more luminous than the sun.  If Zeta Puppis were to replace the sun, it is so large and so hot that Earth would need to be about 250 times further away than it is from the sun; 20 to 25 billion miles away.  Although young, it is already dying, and has started to fuse helium into carbon.  In about another 2 million years it will have become a huge red supergiant, probably more than 200 million miles across.  Soon after, it will explode in a supernova and become a neutron star or, if it retains sufficient mass, a black hole.  It spins on its axis about 100 times faster than the sun.  ( Source:Whillyard)

At about 11 times larger than the sun and 40 times heavier, is Zeta Puppis, also known as Naos.  A young “runaway star” about 970 light-years away from the Sun, it is a spectral class type O5Ia luminous blue-white supergiant.  While only about 4 million years old, it has moved more than 400 light-years from where it formed in the Trumpler 10 cluster.  Its surface temperature is over 42,000°K, and including radiation at all frequencies, it is perhaps as much as 360,000 times more luminous than the sun.  If Zeta Puppis were to replace the sun, it is so large and so hot that Earth would need to be about 250 times further away than it is from the sun; 20 to 25 billion miles away.  Although young, it is already dying, and has started to fuse helium into carbon.  In about another 2 million years it will have become a huge red supergiant, probably more than 200 million miles across.  Soon after, it will explode in a supernova and become a neutron star or, if it retains sufficient mass, a black hole.  It spins on its axis about 100 times faster than the sun. 

( Source:Whillyard)

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Posted on Tuesday, 24 July
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