Obama Speaks on Mine Safety and NASA April 15

Obama will speak on mine safety at 10:50 am eastern before leaving for Cape Canaveral to talk about NASA's future at 2:50 pm eastern.

Prior to his NASA speech, Obama will tour a rocket processing plant. Both speeches will be live streamed at WhiteHouse.gov.
Afterward, he'll head to Miami for a fundraiser. He'll speak at the fundraiser in Miami at 7:10 pm eastern.
Here is a fact sheet on Obama's new plan for NASA.