"Rare Martian Meteorite Provides Clues to Red Planet’s..." Topic

…Evolution

"Analysis of NWA 7635 has helped determine that sometime in its 4.5 billion-year history, Mars had a single volcano that erupted continuously for more than 2 billion years. The research appears in the journal Science Advances.

"Our findings offer new clues to how Mars evolved and insight into the history of volcanic activity on the planet," said study lead author Prof. Tom Lapen, from the University of Houston.

Much of what we know about the composition of rocks from volcanoes on Mars comes from meteorites found on Earth…"
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link

Amicalement
Armand

Oh for pity sake.

They dropped it here on purpose! :)

So, if black oil suddenly drops from the piece and starts headed your way … run!!!

Dan

First off how do they know it came from mars?

How does a planet make meteorites in the first place?

How can one rock tell them 4 billion years of history from a far off planet that it maybe came from in the first place?

I guess they figure if you believe the climate change BS you'll swallow this one as well.

(smile)

Amicalement
Armand

First off how do they know it came from mars?

link

How does a planet make meteorites in the first place?

Mars is right next to the asteroid belt. This means Mars is constantly blasted by rocks hitting it's surface. The meteorites that hit the Earth are pieces of Mars blasted away from it's surface. It is estimated that a few tons of Mars falls on Earth every year. I think there are about 135+ samples that are known to be from Mars.

How can one rock tell them 4 billion years of history from a far off planet that it maybe came from in the first place?

Isotopic decay and the inclusions within the meteor.

link

I guess they figure if you believe the climate change BS you'll swallow this one as well.

Or learn about the science involved.

… and learn about some of the assumptions that go along with it…

Meteorites making meteorites? LoL

dropping a rock against the ground does not cause that much debris to rise out of the earth.

I might have swallowed a bit of that if you had said super volcanoes.

Most likely they are looking at rocks from the asteroid belt that came from the planet that existed there previously and broke up instead.

"…. It is estimated that a few tons of Mars falls on Earth every year…"

In a reverse way… are there Earth material which landed in Mars..? Or any other place?….

Amicalement
Armand

Meteorites making meteorites? LoL

Asteroids from the asteroid belt.

dropping a rock against the ground does not cause that much debris to rise out of the earth.

That may be how the moon was formed. Anyways, what happens on Earth is inconsequential. Gravity on Mars is 1/3 of that on Earth. I'll let that fact sink in.

I might have swallowed a bit of that if you had said super volcanoes.

That your opinion?

Most likely they are looking at rocks from the asteroid belt that came from the planet that existed there previously and broke up instead.

Then why are you wasting this on me? Go educate those morons at NASA and the universities. Seriously, why do you think astrophysicists and astrogeologists wouldn't know about these differences? Did you look at the link provided? What is your criticism about how scientists determine if the rocks are from Mars?

In a reverse way… are there Earth material which landed in Mars..? Or any other place?….

We'd have to go there and find them. Most of the meteorites that land on Earth and we have collected, fall in the deserts and on Antarctica. Makes them easy to spot. That wouldn't be the case on Mars.

But probably way, way less. First, as we are about 2.2 AU from the asteroid belt, we are hit much, much less often than Mars and Jupiter (thankfully). Also, as our gravity is 3 times as much as Mars, the escape velocity needed to cause the blasted rocks to enter space makes this much more improbable.