We may not be able to get people to Mars yet, but Mars can get to us. Fifteen pounds of meteorite that fell to Earth over Morocco last July came from the red planet, scientists confirm. The largest chunk is more than two pounds, the AP reports. Astronomers believe something smashed into Mars millions of years ago, resulting in fragments flying through the solar system and occasionally falling to Earth; this marks just the fifth time experts have confirmed Martian rocks falling to Earth. (More Mars stories.)