Astronomy buffs and others interested in pondering our place in the universe will get a special treat this week as five of our solar system’s planets align for earthly viewing in the night sky. The planets — Mercury, Jupiter, Venus, Uranus and Mars — will be visible from most everywhere on Earth with a westerly view of the sky, experts said, depending on cloud cover and surrounding light pollution. Hundreds of years after Beethoven’s death, researchers using DNA from strands of his hair have found clues about what killed him, according to a new study