The iron oxide formations, first discovered by the Opportunity rover’s camera years ago, were picked up again during a recent scan. NBC’s Brian Williams reports.Sept. 15, 2012
UP NEXT
McCarthy celebrates House passing bill with focus on 'lowering energy costs'
02:18
Kentucky passes law that bans gender-affirming care for transgender youth
02:31
Two Black Hawk helicopters crash during training mission in Kentucky
02:49
Disney move could limit scope of DeSantis' takeover attempt
01:42
Train carrying ethanol derails, catches fire in Minnesota
01:04
Wall Street Journal reporter detained in Russia on suspicion of spying for U.S.