Question

6) What will cause the Sun to turn into a red giant 5 billion years from now? 7) Why don't main sequence M-stars become red giants ? 8) Why do astronomers believe that pulsars are rapidly spinning neutron stars? 9) Why do neutron stars usually spin so fast? 10) If the Sun suddenly became a black hole, how would the Earth's orbit be affected? Why is this not likely to ever happen?

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Answer 1

Document1 - Word ices Mailings Review View Help Tell me what you want to do A Ă Aa- A ALT AaBbccdd AaBbccdd AaBbci AaBbccc AaB Aabbccd AaBbccdd 1 No Spac... Heading 1 Heading 2 A - aty - A- - 1 Normal Title Subtitle Subtle Em... Paragraph Styles 6) The Sun gets energy from nuclear fusion of two H atom into a He atom. When there are no hydrogen remains in the core to fuel nuclear fusion the sun will become red giant and the sun will begin the helium-burning process. 7) once a star has reached to the main-sequence stage of its life, it produces its energy almost entirely from nuclear fusion by conversing two H atom into a He atom in its core. Since hydrogen is the most abundant element in stars, this process can maintain the star's equilibrium for a long time and don't become red giant in this stage. 8) Simply put, pulsars are rotating neutron stars. And pulsars appear to pulse because they rotate. Pulsars are spinning neutron stars that have jets of particles moving almost at the speed of light streaming out above their magnetic poles. These jets produce very powerful beams of light. 9) Neutron stars rotate extremely rapidly after their formation due to the conservation of angular momentum; in analogy to spinning ice skaters pulling in their arms, the slow rotation of the original star's core speeds up as it shrinks. A new-born neutron star can rotate many times a second. 10) Black holes have intense gravitational pull because the density of black holes are very very large. So if sun becomes black hole it will pull the earth into it. But it is very unlikely to be happened because the density of sun is very small compared to a black hole.