There's a sun around Earth? Why isn't it like thousands of degrees above K? As for other known suns, if you go outside on a clear night and look up you'll notice all these little lights that flicker in the sky. Most of them are suns, some are nebula's, a few are planets, some are our own satellites, and some are galaxies which contain everything I've mentioned other that our own satellites because we could never possibly reach another galaxy.