Calculating the Mass of the Sun

Coronavirus closure

Visitor notice: All Royal Museums Greenwich sites are currently closed to visitors, but you can still join us for online events and search our digital collectionsFind out more

Essential information

Key stage: 
Key Stage 4
Resource type: 
Classroom activity
Location: 
Royal Observatory
School subject: 
Astronomy, Maths, Science

Students use Kepler's 3rd law and Saturn's orbit to calculate the mass of the Sun. Accompanies the video 'How do we know how old the Sun is?'.