The STS-122 crew entered the ISS for the first time after the hatches between the station and space shuttle Atlantis opened at 1:40PM EST today. Docking occurred at 12:17PM, delivering the European Space Agency's Columbus laboratory and a new crew member to the orbital outpost.

NASA is reviewing possible damage to Atlantis' heat shield. There are always a few "dings" on ascent. Also, a minor computer issue surfaced.

This evening, Mission Control informed the joint crews that the first spacewalk will be delayed by one day, and that astronaut Stan Love will replace Hans Schlegel on EVA #1. NASA reports:

First Spacewalk Delayed, Mission Extended

Image above: Flight Engineer Dan Tani (left) watches as Mission Specialists Leopold Eyharts (center) and Leland Melvin operate the International Space Station's robotic arm. Photo credit: NASA TV

Space shuttle Atlantis arrived at the International Space Station Saturday morning after a two-day rendezvous. Atlantis is delivering the European Space Agency Columbus science laboratory, which will be attached to the station’s Harmony module on Monday now after the decision was made to delay the first spacewalk due to a crew medical issue.

With no impact to the overall mission objectives, the first spacewalk Monday will be conducted by Rex Walheim and Stan Love, who replaces Hans Schlegel.

The official crew rotation of ESA Astronaut Leopold Eyharts and Expedition 16 Flight Engineer Dan Tani, originally scheduled for Sunday, was completed at 6:20 p.m. Eyharts now is a member of Expedition 16 and Tani is an STS-122 mission specialist.

STS-122 landing is now planned for 10:14 a.m. Tuesday, Feb. 19, at Kennedy Space Center, Fla.

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Flight Day 2 pics are up at the JSC Gallery. Video of today's "backflip" here and here (fast-mo). Hatch opening video here. Discussion here. Status Report #5 here. Check the links at right for play-by-play and NASA TV.