hi..
i am into astronomy as a hobby and i noticed as i was looking for telescopes that the telescopes u buy are not that flexible and that u have to buy a telescope for each type of observong ( to have the best quality of course).
so i made up my mind to build my own telescope(a refractor)...
well if the core lost its heat , we would all die in a fraction of a second due to the cosmic rays that constantly hit the Earth and that we are protected from only by the fact that the core of the Earth is liquid and generates movement and magnetic field.(and i don't think u could try to...