Juno mission has manoeuvre delay

A second trajectory correction manoeuvre for NASA's Juno mission to Jupiter was delayed after a higher than expected readings in the spacecraft's propellant system during the previous burn on 30 August.  The follow up burn on 4 September 2011 has now been delayed to allow checks to be carried out.  The manoeuvres are needed to ensure a slingshot flyby manoevre with Earth.