(1) An international team of astronomers has identified the surviving companion star to the 1572 supernova explosion witnessed by the Danish astronomer Tycho Brahe.

(2) The picture provides evidence that supernovae are one source of cosmic rays, highly energetic particles that bombard the planet, passing through us in their thousands every day.

(3) They discover comets, asteroids, quasars, pulsars, supernovae , planets orbiting other stars, and galaxies at the edge of the universe, but none have ever claimed to have discovered a UFO.

(4) I read up on interstellar objects and astrophysics and studied quasars, pulsars and supernovas , but my main focus was black holes.

(5) The research and analysis ranges from providing more accurate hurricane predictions, to climate change, galaxy formation, black holes and supernovas .