President Obama will deliver his fourth State of the Union address before Congress on February 12.  Watch CNN.com Live for all of your political coverage.

Today's programming highlights...

10:00 am ET - NASA remembers fallen astronauts - On the 10th anniversary of the Space Shuttle Columbia tragedy, NASA pays tribute to the crews of Columbia, Challenger and Apollo 1 during the agency's Day of Remembrance.

11:30 am ET - White House briefing - The Turkey bombing, gun control and immigration will likely dominate Press Secretary Jay Carney's agenda with the White House press corps.

2:00 pm ET - Obama honors science's best - President Obama welcomes the recipients of the National Medal of Science and National Medal of Technology and Innovation to the White House.

2:30 pm ET - Clinton says farewell to State Department - After four years and nearly one million miles on the road, Hillary Clinton says goodbye to employees at the State Department in Washington.

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