Tonight, June 28, at 11:56 p.m. Eastern time (8:56 p.m. Pacific time) the second Mars Exploration Rover, dubbed Opportunity, is scheduled for launch. You can watch the launch on NASA TV or on the Internet.
MER A, also known as Spirit, launced earlier this month and has already traveled about 20 million miles, made trajectory, attitude, and orientation burns and is in great health.
