Flight Day Six will see a news conference from orbit, and prep for tomorrow’s EVA. Mission managers need to decide on whether to pull a protruding gap filler from Discovery’s underside during the mission’s third spacewalk on Wednesday. NASA reports:

Crews Continue Cargo Transfers, Prep for Second Spacewalk
The Ladies Of STS-121 - Astronauts Wilson and Nowak aboard the ISS. NASA PHOTO NO: ISS013-E-48869The STS-121 and Expedition 13 crews are continuing joint operations today aboard Space Shuttle Discovery and the International Space Station.

Today’s activities include the transfer of cargo from Discovery and the Leonardo multi-purpose logistics module to the station. Leonardo is a reusable cargo carrier that was attached to the station on Friday. After its 7,400-plus pounds of cargo are unloaded, it will be refilled with unneeded station items before returning to Discovery’s payload bay for the trip home. Also, the crews are preparing for a second spacewalk, which is slated to kick off at 8:13 a.m. EDT Monday.

All nine crew members will take a break from their work to participate in the joint crew news conference at 11:48 a.m. EDT.

+ NASA TV | + STS-121 Shuttle Mission TV Schedule

Flight Day 4 videos are up. MSNBC EVA clip here. Check the links at right for play-by-play and NASA TV.