CAPE CANAVERAL, Fla. — Space shuttle Atlantis and its seven astronauts returned to Earth with a smooth touchdown this morning to end an 11-day flight that resupplied the International Space Station.

With bright sunlight glinting off it, the shuttle swooped through a clear sky and landed on the runway right on time. Mission Control said no one could remember such welcoming conditions; there were no clouds in sight for Atlantis' midmorning arrival, and the temperature was in the 50s.

"Couldn't have picked a clearer day," commander Charles Hobaugh said. Mission Control congratulated him on a "picture perfect" landing.

It was an especially sweet homecoming for two of the crew.

Astronaut Nicole Stott was away for three months, living at the space station. Fellow crew member Randolph Bresnik's baby daughter was born last weekend.

Hobaugh and his crew spent a week stockpiling the space station. They delivered big spare parts and performed three spacewalks to install equipment and carry out maintenance.