European, Russian space agencies launch mission to Mars

Europe and Russia launched a joint mission Monday to explore the atmosphere of Mars and hunt for signs of life on the red planet.

The unmanned ExoMars probe— a collaboration between the European Space Agency and Roscosmos — took off from a base in Kazakhstan aboard a Russian rocket.

Life on Mars? NASA says planet appears to have flowing water

Mars appears to have flowing rivulets of water, at least in the summer, scientists reported Monday in a finding that boosts the odds of life on the red planet.

"Mars is not the dry, arid planet that we thought of in the past," said Jim Green, director of planetary science for NASA.