Space shuttle Discovery's three main engines have been installed ahead of the launch of the STS-133 mission later this year. Workers at Orbiter Processing Facility-3 at NASA's Kennedy Space Center in Florida will spend the weekend securing the engines and testing the main propulsion system.

The astronauts who will fly Discovery to the International Space Station have a day off from training.

Space shuttle Discovery's STS-133 mission is now targeted for launch Nov. 1 at about 4:33 p.m. EDT.

 Endeavour's STS-134 mission is targeted for liftoff on Feb. 26, 2011, at about 4:19 p.m. EST.

The target dates were adjusted because critical payload hardware for the STS-133 mission will not be ready in time for the previously targeted date.

With Discovery's move, Endeavour had to plan for its next available window, which was February.

Why not try to contact the ISS next time it passes over your QTH.

Worldwide  downlink for voice = 145.800mhz

Region 1 voice uplink = 145.200mhz

You can find out the times when the ISS is overhead here.