00:03Experts at NASA with their rovers have been looking for life on Mars for a while, but so
00:07far they haven't found any signs of it. But now, a new study has revealed that even though Mars is
00:12currently a rusty wasteland, it may have once been where life all started. According to researchers
00:16at the University of Copenhagen, around 4.5 billion years ago, Mars may have been completely
00:21covered by oceans. They believe all of that water came from asteroids, but they also brought something
00:26else with them as well. Here's Professor Martin Pizarro from the Center for Star and Planet
00:30Formation to explain. And we infer that it's a type of asteroid known as carbonicis asteroids,
00:37which are water-rich asteroids formed in the outer solar system, which are also rich in organic
00:44molecules. So for example, we have samples on Earth of carbonicis chondrites. These are fragments
00:49of these asteroids which were formed in the outer solar system. They know those were the types of
00:55asteroids that possibly brought life to Mars, because we found fragments of Martian crust
00:58here on Earth. And the life-giving asteroid likely hit Mars before Earth collided with another planet,
01:03the same collision that produced the Moon, but also destroyed any potential life on our planet.
01:08Meaning not only might ancient life be hiding deep under the red crust of Mars now,
01:12but it may also be where all life on Earth started.
