astrophysics Sources of EM Waves And God said: (i) ∇ · D = 4πρf (ii) ∇ · B = 0 (iii)∇ × E = − ∂B/ ∂t (iv)∇ × H = J+ ∂D/∂t and then there was light. Our Universe contains energy in various forms.
astrophysics The least picky eaters of our universe: black holes Black holes are massive objects scattered across the universe, possessing such strong gravitational fields that not even electromagnetic radiation can escape the pull of the black hole. Yet, there is
