https://padlet.com/tchandra/2ri1zgi6hqm3 By Tanisha en-us 2017-08-29 00:24:40 UTC 2017-09-19 00:33:34 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png tchandra https://padlet.com/tchandra/2ri1zgi6hqm3/wish/183272381 The life of a star is dominated by two forces being in balance. Its own gravity and the radiation pressure of its fusion reaction. In the core hydrogen is fused into helium. Soon the hydrogen in the core is exhausted. If the star is big enough the helium is now fused into carbon. The cores of these stars become layered like onions as heavier and heavier nuclei build up in the centre. Carbon is fused into neon then oxygen which leads to silicon. Eventually the fusion reaction hits iron which can't be fused into any other element. 

When the fusion stops the radiation pressure drops rapidly. The star is no longer in balance and if its core mass exceeds about 1.4 solar masses a catastrophic collapse takes place. The outer part of the core reaches velocities of up to 70,000 kilometres per second as it collapses towards the centre. Now only the fundamental forces inside the  an atom  are left to fight the gravitational collapse. The quantum-mechanical repulsion of electrons is overcome and electrons and protons fuse into neutrons. Packed as densely as an atomic nucleus. The outer layers of the star are catapulted into space in a violent supernova explosion. And now we have a neutron star.]]> 2017-08-29 00:27:24 UTC https://padlet.com/tchandra/2ri1zgi6hqm3/wish/183272381 tchandra https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184110450 Neutron Stars have a mass of 1-3 suns but has the diameter of Manhattan. They are so dense that one cubic centimetre of a neutron star contains the same mass as an iron cube 700 meters wide. That's roughly one billion tons, as massive as Mt Everest. That's in a space the size of a sugar cube. 

If you were to drop an object from one metre over the surface it would hit the star in a microsecond and accelerate at 7.2 million kilometres per hour. The surface of the star is super flat with irregularities up to 5 mm maximum with a 10 cm atmosphere of hot plasma. 

The surface temperature is about 10 million kelvin. Neutron stars spin really really fast. They emit a strong radio signal and the magnetic field is 8 trillion times stronger than the magnetic field of Earth. So strong that atoms get bent when they enter it's influence. ]]> 2017-09-01 00:05:49 UTC https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184110450 tchandra https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184124156 The crust is extremely hard. An iron atom nuclei lattice with a sea of electrons flows through them. The closer we get to the core the more neutrons and the fewer protons we see until there's just indistinguishable neutrons. Than the core of the neutron star is super fluid neutron degenerate matter. A neutron star is like a giant atom core. The only difference is that atom cores are held by strong interaction and neutron stars by gravity. ]]> 2017-09-01 02:22:53 UTC https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184124156 tchandra https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184126812 Once we discovered a lot of other things such as pulsars, magnetars and supernovae . From that we got a better understanding of the universe. ]]> 2017-09-01 02:46:42 UTC https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184126812 tchandra https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184126946 In the next million years a neutron star is expected to pass us sending comets which with major strikes could cause half the population to be wiped out.]]> 2017-09-01 02:48:06 UTC https://padlet.com/tchandra/2ri1zgi6hqm3/wish/184126946 tchandra https://padlet.com/tchandra/2ri1zgi6hqm3/wish/187756533 Right now neutron stars are being discovered, these neutron stars are leading astronomers to deeper darker secrets of the universe.

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