CAPE CANAVERAL , Florida ( CNN ) -- Space shuttle Discovery was scheduled to launch early Tuesday morning for a mission to deliver equipment to the international space station . Discovery rests on launch pad 39A at Cape Canaveral on Monday evening . The seven-member crew was boarding the orbiter Monday night on Cape Canaveral 's launch pad 39A . Commander Rick Sturckow and Pilot Kevin Ford will guide Discovery to the space station after launch , scheduled for 1:36 a.m . ET Tuesday , NASA said . Forecasters gave the Cape an 80 percent chance of acceptable weather conditions at launch time . One of Discovery 's seven astronauts , Nicole Stott , will remain on the space station as a flight engineer , replacing astronaut Timothy Kopra , who will return home aboard Discovery as a mission specialist , according to the NASA Web page for the mission . Also on board : The Leonardo logistics module , science experiments and the Combined Operational Load Bearing External Resistance Treadmill ( COLBERT ) , named for Stephen Colbert of Comedy Central 's `` The Colbert Report . '' Earlier this year , NASA conducted an online poll to name the space station 's newest compartment , asking voters to choose one of four given options or offer their own suggestion . Colbert urged his viewers to suggest `` Colbert , '' which won . But Colbert and the space agency compromised to give the moniker to the treadmill instead . The new module was given the name Tranquility . `` I 'm so proud my treadmill will be going into space to help trim down those famously fat astronauts . Lay off the Tang , Chubby ! '' Colbert said in a statement last week . The mission will be Discovery 's 37th to space , and the 30th shuttle mission dedicated to international space station assembly and maintenance , NASA says .
Discovery scheduled to launch at 1:36 p . ET Tuesday . Cape Canaveral has 80 percent chance of acceptable weather for launch . Discovery to deliver equipment to international space station . Commander Nicole Stott will remain on the space station as a flight engineer .