Strictly, black holes don't actually lead anywhere, as they are not holes in the common sense of the term. According to the Harvard Smithsonian Center for Astrophysics, black holes are regions of the universe in which matter has become so dense that nothing, not even light, can escape its gravitational pull. Within this volume, the original matter has become so compact that it can fairly be said to have disappeared.
Most stars cannot be seen during daylight hours because light from the sun is brighter than the relatively faint light from the other stars. This is largely a result of the Earth's atmosphere scattering the sun's light so that every point in the sky seems brighter than distant stars.
Auroras are formed when charged particles that are emitted from the sun hit the Earth's magnetic field and the atoms in the atmosphere. This interaction causes the gases in the atmosphere to give out photons of different energies, which can be seen from Earth as light.