title: Science - Space Year 10 layout: draft categories:
Year 10 Science tags: Year 10 Science Space Review date: 2019-10-25 12:26:00 math: true Definitions Absolute magnitude: the brightness of an object when viewed from a fixed distance Used to eliminate the brightness differences caused by distance Relative brightness: brightness when viewed from earth Star: A ball of gas held together by gravity Nebula: An interstellar cloud of dust, hydrogen, helium and other ionized gases Solar System: a central sun with its associated planets, asteroids, meteors, satellites (i.