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New Philae photos show comet’s surface

New Philae photos show comet’s surface

Derrick Pitts, chief astronomer at the Franklin Institute in Philadelphia, joins José Díaz-Balart to talk about new pictures sent back to earth from the European Space Agency’s Philae lander.

US wades deeper into war in Syria

US wades deeper into war in Syria

The U.S. may be wading deeper into the war in Syria with the new decision to provide air cover for American-trained rebels. Defense officials now say they believe one of those rebels was killed in a firefight late last week. NBC’s Richard Engel reports.

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