What is the approximate distance from our Solar System to the center of the Milky Way galaxy?
27 light-years27\text{ light-years}27 light-years
270 light-years270\text{ light-years}270 light-years
2700 light-years2700\text{ light-years}2700 light-years
27 000 light-years27\,000\text{ light-years}27000 light-years
59 exam-style questions on CIE IGCSE Physics 6.2.3a Galaxies and the scale of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.