what speed does the earth travel around the sun

Question: what speed does the earth travel around the sun
- Keywords:
  earth,
  space,
  speed,
  sun
Asked by Aoife_xoxx to Colin on 17 Nov 2014.
- Colin Johnston answered on 17 Nov 2014:
  
  That’s pretty easy to work out once you know it takes 365.25 days for Earth to go around the Sun and that we move in a circular orbit (roughly) of radius 150 million km.
  
  So circumference= 2x pi x radius= 945 million km, dividing this by the orbital period give us the average speed
  945 million/365.25 = 2.59 million km/day. This is about 108 000 km/hr or 30 kilometres per second!

Question: what speed does the earth travel around the sun