American space agency, NASA has prepared its space shuttle, Atlantis for its launch for a mission to the International Space Station (ISS).

Even as the space shuttle is ready for launch at the Kennedy Space Centre, the weather could delay the launch. The cloud, rain and thunderstorms forecast for the areas means that there are 70 per cent chances of the launch being postponed.

If the launch, set for around 1124 BST today is postponed, the agency will most likely reschedule for Saturday or Sunday. However, the launch might have to wait until July 16.

Atlantis will deliver biggest ever payload of supplies to the ISS and will have four crew members.

The 135th mission of the space shuttle will end an era of 30 years.