• Question: How can you measure the distance to a star?

    Asked by meg123 to Amy, Karen, Sarah, Vijay, Will on 18 Jun 2012.
    • Photo: Will Reynolds

      Will Reynolds answered on 18 Jun 2012:

      Hi Meg. Distances in space are measured in ‘light-years’. One light-year is the distance light travels in a year 9.5 × 10^15. Which is 9,500,000,000,000,000 metres! You can determine how far away a star is by measuring the colour of the light that shines from it.

Comments