Is There Life on Mars?

Life on Mars?

Bob Berman: Not too many years ago, NASA experts announced that a particular meteorite found in the Allan Hills region of Antarctica had fossils inside of it. In other words, there was life on Mars. There either was or still is.

Is there really evidence of life on Mars? We’ll see.. I’m Jim Metzner and this is the Pulse of the Planet. First of all, how does a fragment of Mars get to earth? Astronomer Bob Berman.

Berman: : The only way we can think that a piece of Mars got here is that Mars, just like every other celestial body, gets pummeled by meteorites on its own, and some of these are so violent that it blasts pieces of Mars so quickly into space that they escape from Mars totally, and then, they wander through space. Only the tiniest fraction of those might eventually, usually after millions of years, wind up coming to Earth as a meteor.

So how do know that a piece of rock found in Antarctica actually came from the planet Mars?

Berman: Oxygen comes in at least three varieties, depending upon how many neutrons are in its nucleus. On Earth it’s consistent the ratio of the most common form to the lesser common forms. On the moon and on Mars there’s a completely different ratio than we see here. So, by analyzing a meteorite, we know where it came from.

And life on Mars?

Berman: It turned out they were wrong that they weren’t really fossils. They looked like fossils of microorganisms, but it turned out they were natural fissures in the rock that looked suspiciously that way. In fact, we later found them in moon rocks as well. So the announcement of life on another world did not pan out.

We’ll hear more about Mars in future programs. I’m Jim Metzner and this is the Pulse of the Planet.

Is There Life on Mars?

Could a meteorite found in Antarctica be proof of life on Mars?
Air Date:06/02/2015
Scientist:
Transcript:

Life on Mars?

Bob Berman: Not too many years ago, NASA experts announced that a particular meteorite found in the Allan Hills region of Antarctica had fossils inside of it. In other words, there was life on Mars. There either was or still is.

Is there really evidence of life on Mars? We'll see.. I'm Jim Metzner and this is the Pulse of the Planet. First of all, how does a fragment of Mars get to earth? Astronomer Bob Berman.

Berman: : The only way we can think that a piece of Mars got here is that Mars, just like every other celestial body, gets pummeled by meteorites on its own, and some of these are so violent that it blasts pieces of Mars so quickly into space that they escape from Mars totally, and then, they wander through space. Only the tiniest fraction of those might eventually, usually after millions of years, wind up coming to Earth as a meteor.

So how do know that a piece of rock found in Antarctica actually came from the planet Mars?

Berman: Oxygen comes in at least three varieties, depending upon how many neutrons are in its nucleus. On Earth it's consistent the ratio of the most common form to the lesser common forms. On the moon and on Mars there's a completely different ratio than we see here. So, by analyzing a meteorite, we know where it came from.

And life on Mars?

Berman: It turned out they were wrong that they weren't really fossils. They looked like fossils of microorganisms, but it turned out they were natural fissures in the rock that looked suspiciously that way. In fact, we later found them in moon rocks as well. So the announcement of life on another world did not pan out.

We'll hear more about Mars in future programs. I'm Jim Metzner and this is the Pulse of the Planet.